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Dental Health Decay is not the only disease that can cause tooth loss. Another serious disease affects the gums, the tissue that surrounds the teeth. It is also caused by bacteria. If the bacteria are not removed every day, they form a substance that stays on the teeth. The substance is known as plaque. At first, the gums appear to be swollen, and may bleed when the teeth are brushed. This can lead to serious infection of the tissue around the teeth. The infection may damage the bone that supports the teeth and cause tooth loss and other health problems. Studies have found that people with severe gum disease have an increased risk of developing heart disease, diabetes and stroke. Gum disease can be treated by a special dentist called a periodontist. Periodontists are trained to repair the gum areas that have been damaged. This can be painful and costly. Dental health experts say the best thing to do is to stop gum disease before it starts. The way to do this is to clean the teeth every day. People also should use dental floss to remove plaque from between the teeth. Most experts also agree that another way to prevent tooth and gum problems is to eat foods high in calcium and vitamins and low in sugar. Scientists continue to develop better dental treatments and equipment. Improved technology may change the way people receive dental treatment in the future. For example, dentists are now suing laser light to treat diseased gums and teeth. Dentists use computer technology to help them repair damaged teeth. Researchers have developed improved methods to repair bone that supports the teeth. And genetic research is expected to develop tests that will show the presence of disease causing bacteria in the mouth. Such increased knowledge about dental diseases and ways to prevent them has improved the health of many people. Yet problems remain in some areas. In industrial countries, minorities and other groups have a high level of untreated dental disease. In developing countries, many areas do not have even emergency care services. The World Health Organization says people in countries in Africa have the most tooth and gum problems. World Health Organization experts say the dental health situation is different for almost every country in the world. As a result, it has developed oral health programs separately for each area. The WHO oral health program is mainly for people living in poor areas. It provides them with information about mouth diseases and health care. It also studies preventive programs using fluoride in water, salt, mild and toothpaste. And it explores ways to include dental health in national health care systems. Many governments and other organizations provide help, so people can get needed dental health services. But dental health professionals say people should take good care of their teeth and gums. They say people should keep their teeth as clean as possible. They should eat foods high in calcium and fiber. These include milk products, whole grain breads and cereals, vegetables, fruits, beans and nuts. Recent studies have shown that eating nuts can help slow the production of plaque on the teeth. Experts say these activities will help everyone improve their dental health throughout their lives.
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更多 “问答题Dental Health Decay is not the only disease that can cause tooth loss. Another serious disease affects the gums, the tissue that surrounds the teeth. It is also caused by bacteria. If the bacteria are not removed every day, they form a substance that stays on the teeth. The substance is known as plaque. At first, the gums appear to be swollen, and may bleed when the teeth are brushed. This can lead to serious infection of the tissue around the teeth. The infection may damage the bone that supports the teeth and cause tooth loss and other health problems. Studies have found that people with severe gum disease have an increased risk of developing heart disease, diabetes and stroke. Gum disease can be treated by a special dentist called a periodontist. Periodontists are trained to repair the gum areas that have been damaged. This can be painful and costly. Dental health experts say the best thing to do is to stop gum disease before it starts. The way to do this is to clean the teeth every day. People also should use dental floss to remove plaque from between the teeth. Most experts also agree that another way to prevent tooth and gum problems is to eat foods high in calcium and vitamins and low in sugar. Scientists continue to develop better dental treatments and equipment. Improved technology may change the way people receive dental treatment in the future. For example, dentists are now suing laser light to treat diseased gums and teeth. Dentists use computer technology to help them repair damaged teeth. Researchers have developed improved methods to repair bone that supports the teeth. And genetic research is expected to develop tests that will show the presence of disease causing bacteria in the mouth. Such increased knowledge about dental diseases and ways to prevent them has improved the health of many people. Yet problems remain in some areas. In industrial countries, minorities and other groups have a high level of untreated dental disease. In developing countries, many areas do not have even emergency care services. The World Health Organization says people in countries in Africa have the most tooth and gum problems. World Health Organization experts say the dental health situation is different for almost every country in the world. As a result, it has developed oral health programs separately for each area. The WHO oral health program is mainly for people living in poor areas. It provides them with information about mouth diseases and health care. It also studies preventive programs using fluoride in water, salt, mild and toothpaste. And it explores ways to include dental health in national health care systems. Many governments and other organizations provide help, so people can get needed dental health services. But dental health professionals say people should take good care of their teeth and gums. They say people should keep their teeth as clean as possible. They should eat foods high in calcium and fiber. These include milk products, whole grain breads and cereals, vegetables, fruits, beans and nuts. Recent studies have shown that eating nuts can help slow the production of plaque on the teeth. Experts say these activities will help everyone improve their dental health throughout their lives.” 相关考题
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Tuberculosis is a disease caused by bacteria called Mycobacterium tuberculosis. ()
此题为判断题(对，错)。
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Infection with ( ) can cause chronic liver disease.
A、Hepatitis AB、Hepatitis BC、Hepatitis CD、None of above
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Passage TwoQuestions 26 to 30 are based on the following passage.Scientists have established that influenza viruses taken from man can cause the disease in animals. In addition，man can catch the disease from animals. In fact，a great number of wild birds seem to carry the virus without showing any evidence of illness. Some scientists conclude that a large family of influenza viruses may have evolved in the bird kingdom，a group that has been on the earth 100 million years and is able to carry the virus without contracting the disease. These are even convincing evidence to show that virus strains are transmitted from place to place and from continent to continent by migrating birds.It is known that two influenza viruses can recombine when both are present in an animal at the same time. The result of such recombinations is a great variety of strains constraining different H and N spikes. This raises the possibility that a human influenza virus can recombine with an influenza virus form. a lower animal to produce an entirely new spike.Research is underway to determine if that is the way that major new strains come into being. Another possibility is that two animal influenza strains may recombine in a pig，for example，to produce a new strain which is transmitted to man.According to the passage，scientists have discovered that influenza viruses______.A. cause ill health in wild birdsB. do not always cause symptoms in birdsC. are rarely present in wild birdsD. change when transferred from animals to man
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Please give particulars of every case of {illness or death} occurring on board，the Health officer said to the master．A.Symptoms or CaseB.disease or accidentC.sickness or mortalityD.Health or person
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第二篇As we have seen,the focus of medical care in our society has been shifting from curing disease to preventing disease一especially in terms of changing our many unhealthy behaviors,such as poor eating habits,smoking,and failure to exercise.The line of thought involved in this shift can be pursued further. Imagine a person who is about the right weight , but does not eat very nutritious（有营养的）foods , who feels OK but exercises only occasionally , who goes to work every day , but is not an outstanding worker,who drinks a few beers at home most nights but does not drive while drunk, and who has no chest pains or abnormal blood counts,but sleeps a lot and often feels tired.This person is not ill.He may not even be at risk for any particular disease.But we can imagine that this person could be a lot healthier.The field of medicine has not traditionally distinguished between someone who is merely "not ill" and someone who is in excellent health and pays attention to the body's special needs.Both types have simply been called "well".In recent years,however,some health specialists have begun to apply the terms "well" and "weilness" only to those who are actively striving to maintain and improve their body's condition.Most importantly,perhaps,people who are well take active responsibility for all matters related to their health.Even people who have a physical disease or handicap（缺陷）may be "well" ,in this new sense,if they make an effort to maintain the best possible health they can in the face of their physical limitations."Wellness" may perhaps best be viewed not as a state that people can achieve,but as an ideal that people can strive for. People who are well are likely to be better able to resist disease and to fight disease when it strikes.And by focusing attention on healthy ways of living,the concept of weilness can have a beneficial impact on the way in which people face the challenges of daily life.The first paragraph implies that_________.A:good health is more than not being illB:sleeping a lot could be harmfulC:regular health checks are essential to keeping fitD:prevention is more difficult than care
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第二篇As we have seen,the focus of medical care in our society has been shifting from curing disease to preventing disease一especially in terms of changing our many unhealthy behaviors,such as poor eating habits,smoking,and failure to exercise.The line of thought involved in this shift can be pursued further. Imagine a person who is about the right weight , but does not eat very nutritious（有营养的）foods , who feels OK but exercises only occasionally , who goes to work every day , but is not an outstanding worker,who drinks a few beers at home most nights but does not drive while drunk, and who has no chest pains or abnormal blood counts,but sleeps a lot and often feels tired.This person is not ill.He may not even be at risk for any particular disease.But we can imagine that this person could be a lot healthier.The field of medicine has not traditionally distinguished between someone who is merely "not ill" and someone who is in excellent health and pays attention to the body's special needs.Both types have simply been called "well".In recent years,however,some health specialists have begun to apply the terms "well" and "weilness" only to those who are actively striving to maintain and improve their body's condition.Most importantly,perhaps,people who are well take active responsibility for all matters related to their health.Even people who have a physical disease or handicap（缺陷）may be "well" ,in this new sense,if they make an effort to maintain the best possible health they can in the face of their physical limitations."Wellness" may perhaps best be viewed not as a state that people can achieve,but as an ideal that people can strive for. People who are well are likely to be better able to resist disease and to fight disease when it strikes.And by focusing attention on healthy ways of living,the concept of weilness can have a beneficial impact on the way in which people face the challenges of daily life.We can learn from the passage that today medical care focuses on__________.A:curing disease and keeping people in healthy physical conditionsB:monitoring patients' body functionsC:removing peoples' bad living habitsD:ensuring peoples' psychological well-being
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第二篇As we have seen,the focus of medical care in our society has been shifting from curing disease to preventing disease一especially in terms of changing our many unhealthy behaviors,such as poor eating habits,smoking,and failure to exercise.The line of thought involved in this shift can be pursued further. Imagine a person who is about the right weight , but does not eat very nutritious（有营养的）foods , who feels OK but exercises only occasionally , who goes to work every day , but is not an outstanding worker,who drinks a few beers at home most nights but does not drive while drunk, and who has no chest pains or abnormal blood counts,but sleeps a lot and often feels tired.This person is not ill.He may not even be at risk for any particular disease.But we can imagine that this person could be a lot healthier.The field of medicine has not traditionally distinguished between someone who is merely "not ill" and someone who is in excellent health and pays attention to the body's special needs.Both types have simply been called "well".In recent years,however,some health specialists have begun to apply the terms "well" and "weilness" only to those who are actively striving to maintain and improve their body's condition.Most importantly,perhaps,people who are well take active responsibility for all matters related to their health.Even people who have a physical disease or handicap（缺陷）may be "well" ,in this new sense,if they make an effort to maintain the best possible health they can in the face of their physical limitations."Wellness" may perhaps best be viewed not as a state that people can achieve,but as an ideal that people can strive for. People who are well are likely to be better able to resist disease and to fight disease when it strikes.And by focusing attention on healthy ways of living,the concept of weilness can have a beneficial impact on the way in which people face the challenges of daily life.What is the author's purpose in writing this article?A: To criticize the traditional view of the medical care.B:To compare the differences between the modern medical care and the traditional medical care.C:To tell us the change of the focus of medical care.D:To tell us the importance of the medical care.
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第二篇As we have seen,the focus of medical care in our society has been shifting from curing disease to preventing disease一especially in terms of changing our many unhealthy behaviors,such as poor eating habits,smoking,and failure to exercise.The line of thought involved in this shift can be pursued further. Imagine a person who is about the right weight , but does not eat very nutritious（有营养的）foods , who feels OK but exercises only occasionally , who goes to work every day , but is not an outstanding worker,who drinks a few beers at home most nights but does not drive while drunk, and who has no chest pains or abnormal blood counts,but sleeps a lot and often feels tired.This person is not ill.He may not even be at risk for any particular disease.But we can imagine that this person could be a lot healthier.The field of medicine has not traditionally distinguished between someone who is merely "not ill" and someone who is in excellent health and pays attention to the body's special needs.Both types have simply been called "well".In recent years,however,some health specialists have begun to apply the terms "well" and "weilness" only to those who are actively striving to maintain and improve their body's condition.Most importantly,perhaps,people who are well take active responsibility for all matters related to their health.Even people who have a physical disease or handicap（缺陷）may be "well" ,in this new sense,if they make an effort to maintain the best possible health they can in the face of their physical limitations."Wellness" may perhaps best be viewed not as a state that people can achieve,but as an ideal that people can strive for. People who are well are likely to be better able to resist disease and to fight disease when it strikes.And by focusing attention on healthy ways of living,the concept of weilness can have a beneficial impact on the way in which people face the challenges of daily life.According to the second paragraph about the traditional care,which statement is true?A:if the person does not have' any unhealthy living habits,he is considered "well".B:If the person does not have any psychological disease,he is considererd "well".C:If the person could be able to handle his daily routines,he is considererd "well".D:If the nerson could be free from any kind of disease.he is considererd "well".
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第二篇As we have seen,the focus of medical care in our society has been shifting from curing disease to preventing disease一especially in terms of changing our many unhealthy behaviors,such as poor eating habits,smoking,and failure to exercise.The line of thought involved in this shift can be pursued further. Imagine a person who is about the right weight , but does not eat very nutritious（有营养的）foods , who feels OK but exercises only occasionally , who goes to work every day , but is not an outstanding worker,who drinks a few beers at home most nights but does not drive while drunk, and who has no chest pains or abnormal blood counts,but sleeps a lot and often feels tired.This person is not ill.He may not even be at risk for any particular disease.But we can imagine that this person could be a lot healthier.The field of medicine has not traditionally distinguished between someone who is merely "not ill" and someone who is in excellent health and pays attention to the body's special needs.Both types have simply been called "well".In recent years,however,some health specialists have begun to apply the terms "well" and "weilness" only to those who are actively striving to maintain and improve their body's condition.Most importantly,perhaps,people who are well take active responsibility for all matters related to their health.Even people who have a physical disease or handicap（缺陷）may be "well" ,in this new sense,if they make an effort to maintain the best possible health they can in the face of their physical limitations."Wellness" may perhaps best be viewed not as a state that people can achieve,but as an ideal that people can strive for. People who are well are likely to be better able to resist disease and to fight disease when it strikes.And by focusing attention on healthy ways of living,the concept of weilness can have a beneficial impact on the way in which people face the challenges of daily life.According to the author,the true meaning of"weilness"is for people_________.A:to best satisfy their body's special needsB:to strive to maintain the best possible healthC:to meet the strictest standards of bodily healthD:to keep a proper balance between work and leisure
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Multiple Sclerosis（多发性硬化症）1 Multiple Sclerosis ( MS) is a disease in which the patient ' s immune（免疫的）system attacks the central nervous system.This can lead to numerous physical and mental symptoms,as the disease affects the transmission of electrical signals between the body and the brain.However,the human body,being a flexi-ble,adaptable system,can compensate for some level of damage,so a person with MS can look and feel fine even though the disease is present.2 MS patients can have one of two main varieties of the disease : the relapsing form（复发型）and theprimary progressive form.In the relapsing form,the disease progresses in a series of jumps;at times it is in remission（减轻）,which means that a person's normal functions return for a period of time before the sys-tem goes into relapse and the disease again becomes more active.This is the most common form of MS; 80％～90% of people have this form of the disease when they are first diagnosed. The relapse-remission cycle can continue for many years.Eventually,however,loss of physical and cognitive functions starts to take place and the remissions become less frequent.3 In the primary progressive form of MS,there are no remissions and a continual but steady loss of physical and cognitive functions takes place.This condition affects about 10％～15% of sufferers atdiagnosis.4 The expected course of the disease,or prognosis（预后）,depends on many variables:the subtype of the disease,the patient's individual characteristics and the initial symptoms.Life expectancy of patients, however,is often nearly the same as that of an unaffected person一provided that a reasonable standard of care is received.In some cases a near-normal life span is possible.5 The cause of the disease is unclear ; it seems that some people have a genetic susceptibility（易感 性）,which is triggered by some unknown environmental factor. Onset（发作）of the disease usually occurs in young adults between the age of 20 and 40.It is more common in women than men;however,it has also been diagnosed in young children and in elderly people.Paragraph 4__________A:The Cause of MSB:The Relapsing Form of MSC:The Treatment for MSD:The Primary Progressive Form of MSE:The Definition of MSF: The Develonment of MS
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第一篇More About Alzheimer' s DiseaseScientists have developed skin tests that may be used in the future to identify people with Alzheimer's disease and may ultimately allow physicians to predict who is at risk of getting this neurological （神经病学的）disorder.The only current means of diagnosing the disease in a living patient is a long and expensive series of tests that eliminate every other cause of dementia."Since Alois Alzheimer described the disease nearly a century ago,people have been trying to find a way to accurately diagnose it in its early stages,"said Patricia Grady,acting director of the National Institute of Neurological Disorders and Stroke in Bethesda,Maryland."This discovery,if confirmed,could prove a big step forward in our efforts to deal with and understand the disease."Alzheimer's is the single greatest cause of mental deterioration in older people,affecting between 2.5 million and 4 million people in the United States alone.The devastating disorder gradually destroys memory and the ability to function,and eventually causes death. There is currently no known treatment for the disease.Researchers discovered that the skin cells of Alzheimer's patients have defects that interfere with their ability to regulate the flow of potassium in and out of the cells.The fact that the cell defects are present in the skin suggests that Alzheimer's results from physiological changes throughout the body,and that dementia may be the first noticeable effect of these changes as the defects affect the cells in the brain,scientists said.The flow of potassium is especially critical in cells responsible for memory formation.The scientists also found two other defects that affect the cells' supply of calcium,another critical element.One test developed by researches calls for growing skin cells in a laboratory culture and then testing them with an electrical detector to determine if the microscopic tunnels that govern the flow of potassium are open.Open potassium channels create a unique electrical signature.A spokesman for the Alzheimer's Association said that if the validity of the diagnostic test can be proven it would be an important development,but he cautioned that other promising tests for Alzheimer's have been disappointing.Which of the following statements about the Alzheimer's disease is NOT true?A:It was so named because Alois Alzheimer first described it.B:It is the greatest cause of mental deterioration in older people.C:It can gradually destroy memory and eventually cause death.D:There are many ways to deal with and cure the disease now.
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Multiple Sclerosis（多发性硬化症）1 Multiple Sclerosis ( MS) is a disease in which the patient ' s immune（免疫的）system attacks the central nervous system.This can lead to numerous physical and mental symptoms,as the disease affects the transmission of electrical signals between the body and the brain.However,the human body,being a flexi-ble,adaptable system,can compensate for some level of damage,so a person with MS can look and feel fine even though the disease is present.2 MS patients can have one of two main varieties of the disease : the relapsing form（复发型）and theprimary progressive form.In the relapsing form,the disease progresses in a series of jumps;at times it is in remission（减轻）,which means that a person's normal functions return for a period of time before the sys-tem goes into relapse and the disease again becomes more active.This is the most common form of MS; 80％～90% of people have this form of the disease when they are first diagnosed. The relapse-remission cycle can continue for many years.Eventually,however,loss of physical and cognitive functions starts to take place and the remissions become less frequent.3 In the primary progressive form of MS,there are no remissions and a continual but steady loss of physical and cognitive functions takes place.This condition affects about 10％～15% of sufferers atdiagnosis.4 The expected course of the disease,or prognosis（预后）,depends on many variables:the subtype of the disease,the patient's individual characteristics and the initial symptoms.Life expectancy of patients, however,is often nearly the same as that of an unaffected person一provided that a reasonable standard of care is received.In some cases a near-normal life span is possible.5 The cause of the disease is unclear ; it seems that some people have a genetic susceptibility（易感 性）,which is triggered by some unknown environmental factor. Onset（发作）of the disease usually occurs in young adults between the age of 20 and 40.It is more common in women than men;however,it has also been diagnosed in young children and in elderly people.MS affects the communication of nerve cells between the body and__________.A:relatives of MS patientsB:the elderly peopleC:the diseaseD:the primary progressive formE:the brainF:life expectancy
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Multiple Sclerosis（多发性硬化症）1 Multiple Sclerosis ( MS) is a disease in which the patient ' s immune（免疫的）system attacks the central nervous system.This can lead to numerous physical and mental symptoms,as the disease affects the transmission of electrical signals between the body and the brain.However,the human body,being a flexi-ble,adaptable system,can compensate for some level of damage,so a person with MS can look and feel fine even though the disease is present.2 MS patients can have one of two main varieties of the disease : the relapsing form（复发型）and theprimary progressive form.In the relapsing form,the disease progresses in a series of jumps;at times it is in remission（减轻）,which means that a person's normal functions return for a period of time before the sys-tem goes into relapse and the disease again becomes more active.This is the most common form of MS; 80％～90% of people have this form of the disease when they are first diagnosed. The relapse-remission cycle can continue for many years.Eventually,however,loss of physical and cognitive functions starts to take place and the remissions become less frequent.3 In the primary progressive form of MS,there are no remissions and a continual but steady loss of physical and cognitive functions takes place.This condition affects about 10％～15% of sufferers atdiagnosis.4 The expected course of the disease,or prognosis（预后）,depends on many variables:the subtype of the disease,the patient's individual characteristics and the initial symptoms.Life expectancy of patients, however,is often nearly the same as that of an unaffected person一provided that a reasonable standard of care is received.In some cases a near-normal life span is possible.5 The cause of the disease is unclear ; it seems that some people have a genetic susceptibility（易感 性）,which is triggered by some unknown environmental factor. Onset（发作）of the disease usually occurs in young adults between the age of 20 and 40.It is more common in women than men;however,it has also been diagnosed in young children and in elderly people.10％～15%of MS patients are diagnosed as having_________.A:relatives of MS patientsB:the elderly peopleC:the diseaseD:the primary progressive formE:the brainF:life expectancy
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Multiple Sclerosis（多发性硬化症）1 Multiple Sclerosis ( MS) is a disease in which the patient ' s immune（免疫的）system attacks the central nervous system.This can lead to numerous physical and mental symptoms,as the disease affects the transmission of electrical signals between the body and the brain.However,the human body,being a flexi-ble,adaptable system,can compensate for some level of damage,so a person with MS can look and feel fine even though the disease is present.2 MS patients can have one of two main varieties of the disease : the relapsing form（复发型）and theprimary progressive form.In the relapsing form,the disease progresses in a series of jumps;at times it is in remission（减轻）,which means that a person's normal functions return for a period of time before the sys-tem goes into relapse and the disease again becomes more active.This is the most common form of MS; 80％～90% of people have this form of the disease when they are first diagnosed. The relapse-remission cycle can continue for many years.Eventually,however,loss of physical and cognitive functions starts to take place and the remissions become less frequent.3 In the primary progressive form of MS,there are no remissions and a continual but steady loss of physical and cognitive functions takes place.This condition affects about 10％～15% of sufferers atdiagnosis.4 The expected course of the disease,or prognosis（预后）,depends on many variables:the subtype of the disease,the patient's individual characteristics and the initial symptoms.Life expectancy of patients, however,is often nearly the same as that of an unaffected person一provided that a reasonable standard of care is received.In some cases a near-normal life span is possible.5 The cause of the disease is unclear ; it seems that some people have a genetic susceptibility（易感 性）,which is triggered by some unknown environmental factor. Onset（发作）of the disease usually occurs in young adults between the age of 20 and 40.It is more common in women than men;however,it has also been diagnosed in young children and in elderly people.An MS patient can feel fine for years without being affected much by_________.A:relatives of MS patientsB:the elderly peopleC:the diseaseD:the primary progressive formE:the brainF:life expectancy
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Multiple Sclerosis（多发性硬化症）1 Multiple Sclerosis ( MS) is a disease in which the patient ' s immune（免疫的）system attacks the central nervous system.This can lead to numerous physical and mental symptoms,as the disease affects the transmission of electrical signals between the body and the brain.However,the human body,being a flexi-ble,adaptable system,can compensate for some level of damage,so a person with MS can look and feel fine even though the disease is present.2 MS patients can have one of two main varieties of the disease : the relapsing form（复发型）and theprimary progressive form.In the relapsing form,the disease progresses in a series of jumps;at times it is in remission（减轻）,which means that a person's normal functions return for a period of time before the sys-tem goes into relapse and the disease again becomes more active.This is the most common form of MS; 80％～90% of people have this form of the disease when they are first diagnosed. The relapse-remission cycle can continue for many years.Eventually,however,loss of physical and cognitive functions starts to take place and the remissions become less frequent.3 In the primary progressive form of MS,there are no remissions and a continual but steady loss of physical and cognitive functions takes place.This condition affects about 10％～15% of sufferers atdiagnosis.4 The expected course of the disease,or prognosis（预后）,depends on many variables:the subtype of the disease,the patient's individual characteristics and the initial symptoms.Life expectancy of patients, however,is often nearly the same as that of an unaffected person一provided that a reasonable standard of care is received.In some cases a near-normal life span is possible.5 The cause of the disease is unclear ; it seems that some people have a genetic susceptibility（易感 性）,which is triggered by some unknown environmental factor. Onset（发作）of the disease usually occurs in young adults between the age of 20 and 40.It is more common in women than men;however,it has also been diagnosed in young children and in elderly people.Young adults might have a higher chance of developing the disease than_________.A:relatives of MS patientsB:the elderly peopleC:the diseaseD:the primary progressive formE:the brainF:life expectancy
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第三篇Liver DiseaseThe liver is the second largest organ in your body. The liver performs many jobs in your body. It filters harmful substances from the blood,makes substances that digest food,and changes food into energy.One out of every 10 Americans is affected by liver disease.Liver disease is one of the top 10 causes of death in the United States.There are more than 100 liver diseases.Viruses cause some of them,like hepatitis A,hepatitis B and hepatitis C.Others can be the result of drugs,poisons or drinking too much alcohol. If the liver forms scar tissue because of an illness,it's called cirrhosis. Cancer can affect the liver. You could also inherit a liver disease such as hemochromatosis.Liver disease can manifest in many different ways. Characteristic manifestations include jaundice,liver enlargement,portal hypertensionand etc.Sometimes the manifestations of liver disease are not obvious.For example,symptoms may include fatigue,a general feeling of illness,loss of appetite,and mild weight loss. However,people may not notice these symptoms,and these symptoms are also typical of many other diseases.Thus,liver disease can easily be overlooked,particularly in its early stages.Hepatitis A vaccination is the best way to prevent HAV (hepatitis A virus).Hepatitis B vaccination is the best way to prevent HBV.Other ways to stop the spread of HBV are:not sharing needles;practicing safe sex;not sharing razors,toothbrushes,or other personal items;using only clean needles for tattoos and body piercings.There is no vaccine to prevent HCV.The only way to prevent HCV is to avoid direct contact with infected blood.Eating a healthy diet and exercising regularly help the liver to work well. Limit the amount of alcohol you drink.When medicines are taken incorrectly,the liver can be harmed.So follow dosing instructions and talk to a doctor or pharmacist about the medicines you are taking. Mixing alcohol and medicines can harm your liver,even if they are not taken at the same time.Toxins can injure liver cells.So limit direct contact with toxins from cleaning and aerosol products,insecticides, chemicals,and additives in cigarettes.Do not smoke.Unobvious symptoms of liver diseases may include the following signs EXCEPT________.A:loss of appetiteB:tirednessC:nauseous feelingD:slight weight loss
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第三篇Liver DiseaseThe liver is the second largest organ in your body. The liver performs many jobs in your body. It filters harmful substances from the blood,makes substances that digest food,and changes food into energy.One out of every 10 Americans is affected by liver disease.Liver disease is one of the top 10 causes of death in the United States.There are more than 100 liver diseases.Viruses cause some of them,like hepatitis A,hepatitis B and hepatitis C.Others can be the result of drugs,poisons or drinking too much alcohol. If the liver forms scar tissue because of an illness,it's called cirrhosis. Cancer can affect the liver. You could also inherit a liver disease such as hemochromatosis.Liver disease can manifest in many different ways. Characteristic manifestations include jaundice,liver enlargement,portal hypertensionand etc.Sometimes the manifestations of liver disease are not obvious.For example,symptoms may include fatigue,a general feeling of illness,loss of appetite,and mild weight loss. However,people may not notice these symptoms,and these symptoms are also typical of many other diseases.Thus,liver disease can easily be overlooked,particularly in its early stages.Hepatitis A vaccination is the best way to prevent HAV (hepatitis A virus).Hepatitis B vaccination is the best way to prevent HBV.Other ways to stop the spread of HBV are:not sharing needles;practicing safe sex;not sharing razors,toothbrushes,or other personal items;using only clean needles for tattoos and body piercings.There is no vaccine to prevent HCV.The only way to prevent HCV is to avoid direct contact with infected blood.Eating a healthy diet and exercising regularly help the liver to work well. Limit the amount of alcohol you drink.When medicines are taken incorrectly,the liver can be harmed.So follow dosing instructions and talk to a doctor or pharmacist about the medicines you are taking. Mixing alcohol and medicines can harm your liver,even if they are not taken at the same time.Toxins can injure liver cells.So limit direct contact with toxins from cleaning and aerosol products,insecticides, chemicals,and additives in cigarettes.Do not smoke.Which following statement is true according to the passage?A:Hepatitis C vaccination is the best way to prevent HCV.B:It is wise not to share personal items so as to stop the spread of HBV.C:It is not harmful when alcohol and medicines are not taken at the same time.D:We cannot use products with toxins like insecticides.
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第三篇Liver DiseaseThe liver is the second largest organ in your body. The liver performs many jobs in your body. It filters harmful substances from the blood,makes substances that digest food,and changes food into energy.One out of every 10 Americans is affected by liver disease.Liver disease is one of the top 10 causes of death in the United States.There are more than 100 liver diseases.Viruses cause some of them,like hepatitis A,hepatitis B and hepatitis C.Others can be the result of drugs,poisons or drinking too much alcohol. If the liver forms scar tissue because of an illness,it's called cirrhosis. Cancer can affect the liver. You could also inherit a liver disease such as hemochromatosis.Liver disease can manifest in many different ways. Characteristic manifestations include jaundice,liver enlargement,portal hypertensionand etc.Sometimes the manifestations of liver disease are not obvious.For example,symptoms may include fatigue,a general feeling of illness,loss of appetite,and mild weight loss. However,people may not notice these symptoms,and these symptoms are also typical of many other diseases.Thus,liver disease can easily be overlooked,particularly in its early stages.Hepatitis A vaccination is the best way to prevent HAV (hepatitis A virus).Hepatitis B vaccination is the best way to prevent HBV.Other ways to stop the spread of HBV are:not sharing needles;practicing safe sex;not sharing razors,toothbrushes,or other personal items;using only clean needles for tattoos and body piercings.There is no vaccine to prevent HCV.The only way to prevent HCV is to avoid direct contact with infected blood.Eating a healthy diet and exercising regularly help the liver to work well. Limit the amount of alcohol you drink.When medicines are taken incorrectly,the liver can be harmed.So follow dosing instructions and talk to a doctor or pharmacist about the medicines you are taking. Mixing alcohol and medicines can harm your liver,even if they are not taken at the same time.Toxins can injure liver cells.So limit direct contact with toxins from cleaning and aerosol products,insecticides, chemicals,and additives in cigarettes.Do not smoke.Which following statement is NOT true according to the passage?A:Top ten causes of death in the US include liver disease.B:10%of Americans die of liver disease.C:Over 100 liver diseases exist.D:10%of Americans suffer from liver disease.
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第三篇Liver DiseaseThe liver is the second largest organ in your body. The liver performs many jobs in your body. It filters harmful substances from the blood,makes substances that digest food,and changes food into energy.One out of every 10 Americans is affected by liver disease.Liver disease is one of the top 10 causes of death in the United States.There are more than 100 liver diseases.Viruses cause some of them,like hepatitis A,hepatitis B and hepatitis C.Others can be the result of drugs,poisons or drinking too much alcohol. If the liver forms scar tissue because of an illness,it's called cirrhosis. Cancer can affect the liver. You could also inherit a liver disease such as hemochromatosis.Liver disease can manifest in many different ways. Characteristic manifestations include jaundice,liver enlargement,portal hypertensionand etc.Sometimes the manifestations of liver disease are not obvious.For example,symptoms may include fatigue,a general feeling of illness,loss of appetite,and mild weight loss. However,people may not notice these symptoms,and these symptoms are also typical of many other diseases.Thus,liver disease can easily be overlooked,particularly in its early stages.Hepatitis A vaccination is the best way to prevent HAV (hepatitis A virus).Hepatitis B vaccination is the best way to prevent HBV.Other ways to stop the spread of HBV are:not sharing needles;practicing safe sex;not sharing razors,toothbrushes,or other personal items;using only clean needles for tattoos and body piercings.There is no vaccine to prevent HCV.The only way to prevent HCV is to avoid direct contact with infected blood.Eating a healthy diet and exercising regularly help the liver to work well. Limit the amount of alcohol you drink.When medicines are taken incorrectly,the liver can be harmed.So follow dosing instructions and talk to a doctor or pharmacist about the medicines you are taking. Mixing alcohol and medicines can harm your liver,even if they are not taken at the same time.Toxins can injure liver cells.So limit direct contact with toxins from cleaning and aerosol products,insecticides, chemicals,and additives in cigarettes.Do not smoke.The main purpose of this passage is to let people know_________.A:liver disease is wide spread in the USB:liver is a very important organ in our bodyC:there are many types of liver diseases and some are easily overlookedD:the causes,symptoms of liver diseases and some tips on prevention
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New U. S. Plan for Disease PreventionUrging Americans to take responsibility for their health,Health and Human Services Secretary Tommy Thompson on Tuesday launched a$15 million program to try to encourage communities to do more to prevent chronic diseases like heart disease,cancer and diabetes（糖尿病）.The initiative highlights the costs of chronic diseases—the leading causes of death in the United States—and outlines ways that people can prevent them,including better diet and in-creased exercise.“In the United States today,7 of 10 deaths and the vast majority of serious illness,disability and health care costs are caused by chronic diseases,”the Health and Human Services Depart-ment said in a statement.The causes are often behavioral—smoking,poor eating habits and a lack of exercise.“I am convinced that preventing disease by promoting better health is a smart policy choice for our future,”Thompson told a conference held to launch the initiative.“Our current health care system is not structured to deal with the rising costs of treating dis-eases that are largely preventable through changes in our lifestyle choices.”Thompson said heart disease and strokes will cost the country more than $351 billion in 2003.“These leading causes of death for men and women are largely preventable,yet we as a na- tion are not taking the steps necessary for us to lead healthier,longer lives,”he said.The $15 million is designed to go to communities to promote prevention,pushing for chan-ges as simple as building sidewalks to encourage people to walk more.Daily exercise such as walking can prevent and even reverse heart disease and diabetes,and prevent cancer and strokes.The money will also go to community organizations,clinics and nutritionists who are being en-couraged to work together to educate people at risk of diabetes about what they can do to prevent it and encourage more cancer screening.The American Cancer Society estimates that half of all cancers can be caught by screening, including Pap tests（巴氏试验）for cervical cancer（宫颈癌）, mammograms for breast cancer, colonoscopies（结肠镜检查）, and prostate（前列腺的）checks.If such cancers were all caught by early screening,the group estimates that the survival rate for cancer would rise to 95 percent.A: greater responsibility of the governmentB: less need for input into treatmentC: higher costs of health careD: more lifestyle choices for people
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New U. S. Plan for Disease PreventionUrging Americans to take responsibility for their health,Health and Human Services Secretary Tommy Thompson on Tuesday launched a$15 million program to try to encourage communities to do more to prevent chronic diseases like heart disease,cancer and diabetes（糖尿病）.The initiative highlights the costs of chronic diseases—the leading causes of death in the United States—and outlines ways that people can prevent them,including better diet and in-creased exercise.“In the United States today,7 of 10 deaths and the vast majority of serious illness,disability and health care costs are caused by chronic diseases,”the Health and Human Services Depart-ment said in a statement.The causes are often behavioral—smoking,poor eating habits and a lack of exercise.“I am convinced that preventing disease by promoting better health is a smart policy choice for our future,”Thompson told a conference held to launch the initiative.“Our current health care system is not structured to deal with the rising costs of treating dis-eases that are largely preventable through changes in our lifestyle choices.”Thompson said heart disease and strokes will cost the country more than $351 billion in 2003.“These leading causes of death for men and women are largely preventable,yet we as a na- tion are not taking the steps necessary for us to lead healthier,longer lives,”he said.The $15 million is designed to go to communities to promote prevention,pushing for chan-ges as simple as building sidewalks to encourage people to walk more.Daily exercise such as walking can prevent and even reverse heart disease and diabetes,and prevent cancer and strokes.The money will also go to community organizations,clinics and nutritionists who are being en-couraged to work together to educate people at risk of diabetes about what they can do to prevent it and encourage more cancer screening.The American Cancer Society estimates that half of all cancers can be caught by screening, including Pap tests（巴氏试验）for cervical cancer（宫颈癌）, mammograms for breast cancer, colonoscopies（结肠镜检查）, and prostate（前列腺的）checks.If such cancers were all caught by early screening,the group estimates that the survival rate for cancer would rise to 95 percent. The author mentions all the following ways of disease prevention EXCEPT_________.A:.better dietB:.increased exerciseC: less smokingD:.more frequent hand washing
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第三篇Liver DiseaseThe liver is the second largest organ in your body. The liver performs many jobs in your body. It filters harmful substances from the blood,makes substances that digest food,and changes food into energy.One out of every 10 Americans is affected by liver disease.Liver disease is one of the top 10 causes of death in the United States.There are more than 100 liver diseases.Viruses cause some of them,like hepatitis A,hepatitis B and hepatitis C.Others can be the result of drugs,poisons or drinking too much alcohol. If the liver forms scar tissue because of an illness,it's called cirrhosis. Cancer can affect the liver. You could also inherit a liver disease such as hemochromatosis.Liver disease can manifest in many different ways. Characteristic manifestations include jaundice,liver enlargement,portal hypertensionand etc.Sometimes the manifestations of liver disease are not obvious.For example,symptoms may include fatigue,a general feeling of illness,loss of appetite,and mild weight loss. However,people may not notice these symptoms,and these symptoms are also typical of many other diseases.Thus,liver disease can easily be overlooked,particularly in its early stages.Hepatitis A vaccination is the best way to prevent HAV (hepatitis A virus).Hepatitis B vaccination is the best way to prevent HBV.Other ways to stop the spread of HBV are:not sharing needles;practicing safe sex;not sharing razors,toothbrushes,or other personal items;using only clean needles for tattoos and body piercings.There is no vaccine to prevent HCV.The only way to prevent HCV is to avoid direct contact with infected blood.Eating a healthy diet and exercising regularly help the liver to work well. Limit the amount of alcohol you drink.When medicines are taken incorrectly,the liver can be harmed.So follow dosing instructions and talk to a doctor or pharmacist about the medicines you are taking. Mixing alcohol and medicines can harm your liver,even if they are not taken at the same time.Toxins can injure liver cells.So limit direct contact with toxins from cleaning and aerosol products,insecticides, chemicals,and additives in cigarettes.Do not smoke.The word "manifest" in Paragraph 3 could be best replaced by__________.A:disappearB:happenC:showD:cause
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With the large number of dogs roaring through our communities，people need to know the facts about rabies（狂犬病），a fatal disease caused by animal bites.Despite vaccination（接種疫苗）programs，rabies is still very prevalent，and will continue to be a serious public health problem for many years to come.
Rabies strikes the central nervous system and brings on choking，convulsions（抽搐）and inability to swallow liquids.It can even cause death.If you or anyone in your family is bitten by dog，cat or other animal，you should not panic，but thoroughly wash the wound with plenty of soap and water and rush to nearby hospital for immediate treatment.If you own the animal which did the biting，you should immediately call a veterinarian for advice and make sure the public health authorities know when and where the biting took place and who was bitten.
Rabies is a kind of disease which________.A.causes heart attack
B.hurt one‘s legs
C.causes nerve-centre problem and breathing problem
D.strikes one‘s brain
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单选题A study by a group of dentists has concluded that regular use of a certain brand of mouthwash is as effective as flossing in preventing gum disease. The mouthwash company has released a television ad suggesting that people who do not like flossing can now rely solely on mouthwash and brushing to maintain good dental health. A leading manufacturer of dental floss brought a lawsuit against the mouthwash company demanding that the advertisement be discontinued on the grounds that it is misleading. Which of the following, if true, provides the strongest support for the dental floss company’s claim that the advertisement is misleading?A
The dental floss manufacturer is concerned that it will lose market share in the dental health market because the advertisement encourages people to switch from dental floss to mouthwash.B
The dental floss company claims in its own advertisements that brushing and flossing after every meal is the most effective way to maintain good dental health.C
Although mouthwash is an effective deterrent to gum disease, it is less effective than dental floss at removing plaque and preventing cavities between teeth.D
Per usage, mouthwash is three times more expensive than dental floss, if the recommended amounts of both products are used.E
The dentists who conducted the study on the effectiveness of mouthwash in preventing gum disease obtained their funding for the study from a company that manufactures mouthwash.
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单选题Eating too much fat can devote to heart disease and cause high blood pressure.A
attribute toB
attend toC
distribute toD
contribute to
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单选题A stethoscope can be used to ______.A
check health conditionsB
cure some illnessesC
measure temperaturesD
treat heart disease
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