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The “cure rate”of many diseases increased dramatically after penicillin was ______ by more doctors.
A.put into practice
B.put into effect
C.put into use
D.put into operation
B.put into effect
C.put into use
D.put into operation
参考答案
参考解析
解析：本题考查词组辨析。题目意为“随着越来越多的医生使用青霉素，许多疾病的治愈率急剧上升。”A、B选项“实行，实施”，强调将理论付诸实践；C选项“使用，应用”，强调投入使用；D选项“利用，运用”，强调投入运行。这里指的是医生开始在治疗中使用青霉素。
更多 “The “cure rate”of many diseases increased dramatically after penicillin was ______ by more doctors.A.put into practice B.put into effect C.put into use D.put into operation” 相关考题
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Lung Cancer1 The death rate due to cancer of the lungs has increased more than 800 percent in males and has more than doubled in females during the last 25 years.It is considerably higher in urban and industrial areas than in rural districts.There are many possible causes,but it is still controversial which are most blameworthy.Those factors which have been mentioned most frequently are the presence of foreign particles and other irritants in the air(smoke particles,smog,exhaust fumes),and the smoking of cigarettes and cigars.2 Numerous studies have demonstrated a striking correlation between the death rate from lung cancer and smoking habits.Among heavy smokers-21 to 30 cigarettes per day-the mortality rate from lung cancer is nearly 17 times the rate from nonsmokers.It is expected the death rate among women will increase as the present high rate of smoking among women has its effect.3 Sometimes cases of lung cancer are discovered at the time an X-ray is taken for the purpose of detecting tuberculosis.Too often,however,a current emphasis upon the danger of exposure to radiation from x-ray machines can frighten people away from routine chest X-rays and thus prevent an early diagnosis of lung cancer.Early detection is absolutely essential if any possibility of cure is to be maintained.Modern X-ray machines in competent hands pose such slight danger,at least to those over 40 years of age,that this would be much more than offset by the advantages of discovering a tumor while it is small enough to be completely removed.4 A common form of lung cancer is bronchogenic carcinoma,so-called because the malignancy originates in a bronchus.The tumor may grow until the bronchus is blocked,cutting off the supply of air to that lung.The lung then collapses,and the secretions trapped in the lung spaces become infected,with a resulting pneumonia or the formation of a lung abscess.Such a lung cancer can also spread to cause secondary growths in the lymph nodes of the chest and neck as well as in the brain and other parts of the body.The only treatment that offers a possibility of cure,before secondary growths have had time to form,is to remove the lung completely.This operation is called pneumonectomy.5 Malignant tumors of the stomach,the breast,the prostate gland and other organs may spread to the lungs,causing secondary growths.People are still not sure______.A:before the cancer cells spread elsewhereB:the more chances of dying of X-ray radiation he will haveC:what is most responsible for lung cancerD:as some people imagineE:the more chances of getting lung cancer he will haveF:which form of lung cancer is a common one
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第二篇Natural MedicinesSince earliest days,humans have used some kinds of medicines.We know this because humans have survived.Ancient treatments for injury and disease were successful enough to keep humans from dying out completely.They were successful long before the time of modern medicine.Before the time of doctors with white coats and shiny（发亮的）instruments. Before the time of big hospitals with strange and wonderful equipment.Many parts of the world still do not have university-educated doctors. Nor do they have expensive hospi- tals.Yet injuries are treated.And diseases are often cured.How?By ancient methods.By medicines that might seem mysterious , even magical（有魔力的）.Traditional medicines are neither mysterious nor magical, however.Through the centuries, tribal（部族的）medicine men experimented with plants. They found many use- ful chemicals in the plants.And scientists believe many of these traditional medicines may provide the cure for some of today's most serious diseases.Experts say almost 80% of the people in the world use plants for health care.These natural medicines are used not just because people have no other form of treatment.They are used because people trust them. In developed areas,few people think about the source of the medicines they buy in a store.Yet many wide- ly-used medicines are from ancient sources,especially plants.Some experts say more than 25% of modern medicines come,in one way or another,from nature.Scientists have long known that nature is really a chemical factory.All living things contain chemicals that help them survive.So scientists' interest in traditional medicine is not new.But it has become an ur-gent concern.This is because the earth's supply of natural medicines may be dropping rapidly. It is believed by scientists that traditional medicines__________.A:can cure all kinds of diseasesB:may cure some of today's most serious diseasesC:are no longer useful for modern menD:are too cheap to be useful
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Lung Cancer1 The death rate due to cancer of the lungs has increased more than 800 percent in males and has more than doubled in females during the last 25 years.It is considerably higher in urban and industrial areas than in rural districts.There are many possible causes,but it is still controversial which are most blameworthy.Those factors which have been mentioned most frequently are the presence of foreign particles and other irritants in the air(smoke particles,smog,exhaust fumes),and the smoking of cigarettes and cigars.2 Numerous studies have demonstrated a striking correlation between the death rate from lung cancer and smoking habits.Among heavy smokers-21 to 30 cigarettes per day-the mortality rate from lung cancer is nearly 17 times the rate from nonsmokers.It is expected the death rate among women will increase as the present high rate of smoking among women has its effect.3 Sometimes cases of lung cancer are discovered at the time an X-ray is taken for the purpose of detecting tuberculosis.Too often,however,a current emphasis upon the danger of exposure to radiation from x-ray machines can frighten people away from routine chest X-rays and thus prevent an early diagnosis of lung cancer.Early detection is absolutely essential if any possibility of cure is to be maintained.Modern X-ray machines in competent hands pose such slight danger,at least to those over 40 years of age,that this would be much more than offset by the advantages of discovering a tumor while it is small enough to be completely removed.4 A common form of lung cancer is bronchogenic carcinoma,so-called because the malignancy originates in a bronchus.The tumor may grow until the bronchus is blocked,cutting off the supply of air to that lung.The lung then collapses,and the secretions trapped in the lung spaces become infected,with a resulting pneumonia or the formation of a lung abscess.Such a lung cancer can also spread to cause secondary growths in the lymph nodes of the chest and neck as well as in the brain and other parts of the body.The only treatment that offers a possibility of cure,before secondary growths have had time to form,is to remove the lung completely.This operation is called pneumonectomy.5 Malignant tumors of the stomach,the breast,the prostate gland and other organs may spread to the lungs,causing secondary growths.Paragraph 3______A:Common Secondary Lung CancersB:The Advantages Brought About by Routine Chest CheckupC:Relationship Between Mortality Rate From Lung Cancer and Smoking HabitsD:Operable and Inoperable Lung CancersE:The Increasing Death Rate From Lung Cancer and Possible Causes F:An Ordinary Type of Lung Cancer
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Lung Cancer1 The death rate due to cancer of the lungs has increased more than 800 percent in males and has more than doubled in females during the last 25 years.It is considerably higher in urban and industrial areas than in rural districts.There are many possible causes,but it is still controversial which are most blameworthy.Those factors which have been mentioned most frequently are the presence of foreign particles and other irritants in the air(smoke particles,smog,exhaust fumes),and the smoking of cigarettes and cigars.2 Numerous studies have demonstrated a striking correlation between the death rate from lung cancer and smoking habits.Among heavy smokers-21 to 30 cigarettes per day-the mortality rate from lung cancer is nearly 17 times the rate from nonsmokers.It is expected the death rate among women will increase as the present high rate of smoking among women has its effect.3 Sometimes cases of lung cancer are discovered at the time an X-ray is taken for the purpose of detecting tuberculosis.Too often,however,a current emphasis upon the danger of exposure to radiation from x-ray machines can frighten people away from routine chest X-rays and thus prevent an early diagnosis of lung cancer.Early detection is absolutely essential if any possibility of cure is to be maintained.Modern X-ray machines in competent hands pose such slight danger,at least to those over 40 years of age,that this would be much more than offset by the advantages of discovering a tumor while it is small enough to be completely removed.4 A common form of lung cancer is bronchogenic carcinoma,so-called because the malignancy originates in a bronchus.The tumor may grow until the bronchus is blocked,cutting off the supply of air to that lung.The lung then collapses,and the secretions trapped in the lung spaces become infected,with a resulting pneumonia or the formation of a lung abscess.Such a lung cancer can also spread to cause secondary growths in the lymph nodes of the chest and neck as well as in the brain and other parts of the body.The only treatment that offers a possibility of cure,before secondary growths have had time to form,is to remove the lung completely.This operation is called pneumonectomy.5 Malignant tumors of the stomach,the breast,the prostate gland and other organs may spread to the lungs,causing secondary growths.The more cigarettes one smokes,______.A:before the cancer cells spread elsewhereB:the more chances of dying of X-ray radiation he will haveC:what is most responsible for lung cancerD:as some people imagineE:the more chances of getting lung cancer he will haveF:which form of lung cancer is a common one
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第一篇What are the advantages and disadvantages of greenhouse technology?There are many benefits of using greenhouses.Firstly,by using it,the productivity of the crop is increased considerably.Secondly,a superior quality can be obtained as they are grown under a better controlled environment. Thirdly,the percentage of germination of seeds is high in greenhouses.Finally,greenhouses allow an effective control of pests and diseases as the growing area is enclosed.However,it has many disadvantages.On the one hand,greenhouses require a lot of work and constant maintenance.On the other hand,it is expensive to construct since gardeners will spend more money to buy a prefabricated greenhouse or to build a greenhouse than to plant directly in the ground or containers.Also,if Gardeners want to build their own greenhouses,they must pay highly for construction materials and sometimes,for additional labour. Moreover,greenhouses needs more space and homeowners need a very large space in their backyards or gardens for the greenhouse.Finally,the maintenance of the equipments used in greenhouses necessitates a lot of money and control.Which of the following is not a benefit the greenhouse technology brings?A:There are no pests in greenhouses.B:The quality of crop is superior.C:More seeds can germinate in greenhouses.D:Crop diseases can be well-controlled.
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第二篇 Chronic Diseases: The World's Leading KillerChronic diseases are the leading cause of death in the world.Yet health experts say these conditions are often the most preventable.Chronic diseases include heart disease, stroke,cancer,diabetes（糖尿病）and lung disorders.The World Health Organization says chronic diseases lead to about seventeen million early deaths each year.This United Nations agency expects more than three hundred eighty million people to die of chronic diseases by 2015.It says about eighty percent of the deaths will happen in developing nations.The WHO says chronic diseases now cause two-thirds of all deaths in the Asia-Pacific area,ln ten years it could be almost three-fourths.People are getting sick in their mosteconomically productive years.In fact,experts say chronic diseases are killing more middle-aged people in poorer countries than in wealthier ones.The WHO estimates that chronic diseases will cost China alone more than five hundred thousand million dollars in the next ten years.That estimate represents the costs of medical treatment and lost productivity.Russia and lndia are also expected to face huge economic losses.Kim Hak-Su is the head of the United Nations Economic and Social Commission for Asia and the Pacific.Last week in Bangkok he presented a WHO report on the problem.It says deaths from chronic diseases have increased largely as the result of economic gains in many countries.The report details the latest findings from nine countries.They include Brazil,Britain, Canada,China,India and Nigeria.The others are Pakistan,Russia and Tanzania.Mister Kim says infectious and parasitic（寄生的）diseases have until recently been the main killers in Asia and the Pacific.But he says they are no longer the major cause of death in most countries.Health officials say as many as eighty percent of deaths from chronic diseases could be prevented.They say an important tool for governments is to restrict the marketing of alcohol and tobacco to young people.Also,more programs are needed to urge healthy eating and more physical activity.UN officials aim through international action to reduce chronic-disease deaths by two percent each year through 2015.They say meeting that target could save thirty-six million lives.That includes twenty-five million in Asia and the Pacific. Which is NOT mentioned as a way to prevent chronic-disease deaths?A:Timely medical treatment.B: Healthy eating.C: More physical activity.D:Reduction in drinking and smoking.
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第二篇 Chronic Diseases: The World's Leading KillerChronic diseases are the leading cause of death in the world.Yet health experts say these conditions are often the most preventable.Chronic diseases include heart disease, stroke,cancer,diabetes（糖尿病）and lung disorders.The World Health Organization says chronic diseases lead to about seventeen million early deaths each year.This United Nations agency expects more than three hundred eighty million people to die of chronic diseases by 2015.It says about eighty percent of the deaths will happen in developing nations.The WHO says chronic diseases now cause two-thirds of all deaths in the Asia-Pacific area,ln ten years it could be almost three-fourths.People are getting sick in their mosteconomically productive years.In fact,experts say chronic diseases are killing more middle-aged people in poorer countries than in wealthier ones.The WHO estimates that chronic diseases will cost China alone more than five hundred thousand million dollars in the next ten years.That estimate represents the costs of medical treatment and lost productivity.Russia and lndia are also expected to face huge economic losses.Kim Hak-Su is the head of the United Nations Economic and Social Commission for Asia and the Pacific.Last week in Bangkok he presented a WHO report on the problem.It says deaths from chronic diseases have increased largely as the result of economic gains in many countries.The report details the latest findings from nine countries.They include Brazil,Britain, Canada,China,India and Nigeria.The others are Pakistan,Russia and Tanzania.Mister Kim says infectious and parasitic（寄生的）diseases have until recently been the main killers in Asia and the Pacific.But he says they are no longer the major cause of death in most countries.Health officials say as many as eighty percent of deaths from chronic diseases could be prevented.They say an important tool for governments is to restrict the marketing of alcohol and tobacco to young people.Also,more programs are needed to urge healthy eating and more physical activity.UN officials aim through international action to reduce chronic-disease deaths by two percent each year through 2015.They say meeting that target could save thirty-six million lives.That includes twenty-five million in Asia and the Pacific. How many people in developing countries will probably die of chronic diseases by 2015?A: More than 17 million.B:More than 380 million.C: More than 304 million.D: More than 25 mullion.
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第二篇 Chronic Diseases: The World's Leading KillerChronic diseases are the leading cause of death in the world.Yet health experts say these conditions are often the most preventable.Chronic diseases include heart disease, stroke,cancer,diabetes（糖尿病）and lung disorders.The World Health Organization says chronic diseases lead to about seventeen million early deaths each year.This United Nations agency expects more than three hundred eighty million people to die of chronic diseases by 2015.It says about eighty percent of the deaths will happen in developing nations.The WHO says chronic diseases now cause two-thirds of all deaths in the Asia-Pacific area,ln ten years it could be almost three-fourths.People are getting sick in their mosteconomically productive years.In fact,experts say chronic diseases are killing more middle-aged people in poorer countries than in wealthier ones.The WHO estimates that chronic diseases will cost China alone more than five hundred thousand million dollars in the next ten years.That estimate represents the costs of medical treatment and lost productivity.Russia and lndia are also expected to face huge economic losses.Kim Hak-Su is the head of the United Nations Economic and Social Commission for Asia and the Pacific.Last week in Bangkok he presented a WHO report on the problem.It says deaths from chronic diseases have increased largely as the result of economic gains in many countries.The report details the latest findings from nine countries.They include Brazil,Britain, Canada,China,India and Nigeria.The others are Pakistan,Russia and Tanzania.Mister Kim says infectious and parasitic（寄生的）diseases have until recently been the main killers in Asia and the Pacific.But he says they are no longer the major cause of death in most countries.Health officials say as many as eighty percent of deaths from chronic diseases could be prevented.They say an important tool for governments is to restrict the marketing of alcohol and tobacco to young people.Also,more programs are needed to urge healthy eating and more physical activity.UN officials aim through international action to reduce chronic-disease deaths by two percent each year through 2015.They say meeting that target could save thirty-six million lives.That includes twenty-five million in Asia and the Pacific. Which can NOT be learned from the passage?A: Many chronic-disease deaths are preventable.B:Chronic diseases are the major cause of death in most countries.C:Chronic diseases are killing more middle-aged people than elderly people.D: Economic gains in many countries have contributed to chronic-disease deaths.
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第二篇 Chronic Diseases: The World's Leading KillerChronic diseases are the leading cause of death in the world.Yet health experts say these conditions are often the most preventable.Chronic diseases include heart disease, stroke,cancer,diabetes（糖尿病）and lung disorders.The World Health Organization says chronic diseases lead to about seventeen million early deaths each year.This United Nations agency expects more than three hundred eighty million people to die of chronic diseases by 2015.It says about eighty percent of the deaths will happen in developing nations.The WHO says chronic diseases now cause two-thirds of all deaths in the Asia-Pacific area,ln ten years it could be almost three-fourths.People are getting sick in their mosteconomically productive years.In fact,experts say chronic diseases are killing more middle-aged people in poorer countries than in wealthier ones.The WHO estimates that chronic diseases will cost China alone more than five hundred thousand million dollars in the next ten years.That estimate represents the costs of medical treatment and lost productivity.Russia and lndia are also expected to face huge economic losses.Kim Hak-Su is the head of the United Nations Economic and Social Commission for Asia and the Pacific.Last week in Bangkok he presented a WHO report on the problem.It says deaths from chronic diseases have increased largely as the result of economic gains in many countries.The report details the latest findings from nine countries.They include Brazil,Britain, Canada,China,India and Nigeria.The others are Pakistan,Russia and Tanzania.Mister Kim says infectious and parasitic（寄生的）diseases have until recently been the main killers in Asia and the Pacific.But he says they are no longer the major cause of death in most countries.Health officials say as many as eighty percent of deaths from chronic diseases could be prevented.They say an important tool for governments is to restrict the marketing of alcohol and tobacco to young people.Also,more programs are needed to urge healthy eating and more physical activity.UN officials aim through international action to reduce chronic-disease deaths by two percent each year through 2015.They say meeting that target could save thirty-six million lives.That includes twenty-five million in Asia and the Pacific. Due to chronic diseases China will have to faceA:great pressure from other countries.B:a limited economic market.C:a shortage of the labor force.D:huge economic losses.
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第二篇 Chronic Diseases: The World's Leading KillerChronic diseases are the leading cause of death in the world.Yet health experts say these conditions are often the most preventable.Chronic diseases include heart disease, stroke,cancer,diabetes（糖尿病）and lung disorders.The World Health Organization says chronic diseases lead to about seventeen million early deaths each year.This United Nations agency expects more than three hundred eighty million people to die of chronic diseases by 2015.It says about eighty percent of the deaths will happen in developing nations.The WHO says chronic diseases now cause two-thirds of all deaths in the Asia-Pacific area,ln ten years it could be almost three-fourths.People are getting sick in their mosteconomically productive years.In fact,experts say chronic diseases are killing more middle-aged people in poorer countries than in wealthier ones.The WHO estimates that chronic diseases will cost China alone more than five hundred thousand million dollars in the next ten years.That estimate represents the costs of medical treatment and lost productivity.Russia and lndia are also expected to face huge economic losses.Kim Hak-Su is the head of the United Nations Economic and Social Commission for Asia and the Pacific.Last week in Bangkok he presented a WHO report on the problem.It says deaths from chronic diseases have increased largely as the result of economic gains in many countries.The report details the latest findings from nine countries.They include Brazil,Britain, Canada,China,India and Nigeria.The others are Pakistan,Russia and Tanzania.Mister Kim says infectious and parasitic（寄生的）diseases have until recently been the main killers in Asia and the Pacific.But he says they are no longer the major cause of death in most countries.Health officials say as many as eighty percent of deaths from chronic diseases could be prevented.They say an important tool for governments is to restrict the marketing of alcohol and tobacco to young people.Also,more programs are needed to urge healthy eating and more physical activity.UN officials aim through international action to reduce chronic-disease deaths by two percent each year through 2015.They say meeting that target could save thirty-six million lives.That includes twenty-five million in Asia and the Pacific.Until recently the main killers in Asia and the Pacific have beenA:economic gains.B: lost productivity.C:chronic diseases.D: infectious and parasitic diseases.
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Natural MedicinesSince earliest days,humans have used some kinds of medicines.We know this because humans have survived.Ancient treatments for injury and disease were successful enough to keep humans from dying out completely.They were successful long before the time of modern medicine. Before the time of doctors with white coats and shiny（发亮的）instruments. Before the time of big hospitals with strange and wonderful equipment.Many parts of the world still do not have university-educated doctors. Nor do they have expensive hospitals.Yet injuries are treated.And diseases are often cured.How?By ancient methods. By medicines that might seem mysterious , even magical（有魔力的）.Traditional medicines are neither mysterious nor magical,however.Through the centuries , tribal（部落的）medicine men experimented with plants. They found many useful chemicals in the plants.And scientists believe many of these traditional medicines may provide the cure for some of today's most serious diseases.Experts say almost 80% of the people in the world use plants for health care.These natural medicines are used not just because people have no other form of treatment. They are used because people trust them. In developed areas,few people think about the source of the medicines they buy in a store .Yet many widely-used medicines are from ancient sources,especially plants.Some experts say more than 25%of modem medicines come,in one way or another,from nature.Scientists have long known that nature is really a chemical factory. All living things contain chemicals that help them survive .So scientists' interest in traditional medicine is not new.But it has become an urgent concern.This is because the earth's supply of natural medicines may be dropping rapidly. It is believed by scientists that traditional medicines______.A: can cure all kinds of diseasesB: may cure some of today's most serious diseasesC: are no longer useful for modern menD: are too cheap to be useful
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Lung Cancer1 The death rate due to cancer of the lungs has increased more than 800 percent in males and has more than doubled in females during the last 25 years.It is considerably higher in urban and industrial areas than in rural districts.There are many possible causes,but it is still controversial which are most blamewor-thy.Those factors which have been mentioned most frequently are the presence of foreign particles and other irritants in the air(smoke particles,smog,exhaust fumes),and the smoking of cigarettes and cigars.2 Numerous studies have demonstrated a striking correlation between the death rate from lung cancer and smoking habits.Among heavy smokers-21 to 30 cigarettes per day-the mortality rate from lung cancer is nearly 17 times the rate from nonsmokers.It is expected that the death rate among women will increase as the present high rate of smoking among women has its effect.3 Sometimes cases of lung cancer are discovered at the time when an X-ray is taken for the purpose of detecting tuberculosis.Too often,however,a current emphasis upon the danger of exposure to radiation from X-ray machines can frighten people away from routine chest X-rays and thus prevent an early diagnosis of lung cancer.Early detection is absolutely essential if any possibility of cure is to be maintained.Modern X-ray machines in competent hands pose such slight danger,at least to those over 40 years of age,that this would be much more than offset by the advantages of discovering a tumor while it is small enough to be com-pletely removed.4 A common form of lung cancer is bronchogenic carcinoma,so-called because the malignancy originates in a bronchus.The tumor may grow until the bronchus is blocked,cutting off the supply of air to that lung.The lung then collapses,and the secretions trapped in the lung spaces become infected,with a re-sulting pneumonia or the formation of a lung abscess.Such a lung cancer can also spread to cause secondary growths in the lymph nodes of the chest and neck as well as in the brain and other parts of the body.The on-ly treatment that offers a possibility of cure,before secondary growths have time to form,is to remove the lung completely.This operation is called pneumonectomy.5 Malignant tumors of the stomach,the breast,the prostate gland and other organs may spread to the lungs,causing secondary growths.The more cigarettes one smokes,______.A:before the cancer cells spread elsewhereB:the more chances of dying of X-ray radiation he will haveC:what is most responsible for lung cancerD:as some people imagineE:the more chances of getting lung cancer he will have F:which form of lung cancer is a common one
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What Can Gene Technology BringAmong all the fast growing science and technology,the research of human genes,or biological engineering as people call it,is drawing more and more attention now,Sometimes it is a hot topic discussed by people.The greatest thing that gene technology can do is to cure some serious diseases.Doctors at present can almost do nothing with them.Cancer and heart disease are the examples.______________(46)And to date,doctors have not found an effective way to cure them.But if the gene technology is applied, these two diseases can be cured completely,bringing happiness and more living days to the patients._____________(47)Gene technology can help people to give birth to more healthy and clever children.Some families,withthe English imperial family being a good example , have hereditary（遗传的）diseases._____________ (48 ) Thisis a great trouble for these families.In the past,doctors could do nothing about the hereditary diseases.Butgene technology can solve this problem perfectly.______________(49)Some people are worrying that the gene research can be used to manufacture human beings in large quantities.In the past few years,scientists have succeeded in cloning a sheep,so these people predict that human babies would soon be cloned._____________(50)Of course,the governments must take care to controlgene technology._________（47）A:Every year,millions of people are murdered by these two diseases.B:But I believe cloned babies will not come out in large quantities,for most couples in the world can havebabies in very normal way.B:This means their children will for sure have the family disease.C:The scientists just need to find the wrong gene and correct it,and a healthy child will be born.E:In addition,the great amount of money people spend on curing their diseases can be saved,and it benefitst he economy as well.F:Clone technology is an achievement in science.
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单选题Which of the following statements about IKK∈ is INCORRECT?A
The basic job of IKK∈ is to protect the body from diseases.B
IKK∈ is a kind of protein.C
IKK∈ is linked with many immune diseases.D
The mice missing IKK∈ genes gain much more weight.
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单选题How many more decades will have to pass ______ scientists succeed in providing a cure for cancer?A
whenB
beforeC
sinceD
until
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单选题According to this passage, turtles are of great importance in China because they are _________.A
rareB
the most expensive in food marketsC
imported into ChinaD
used to cure certain diseases
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单选题If it becomes necessary to cutout an individual cylinder of a large, low-speed, main propulsion diesel engine, the fuel to that cylinder should be secured and its （）A
fuel pump should be removed and all connections blanked offB
cylinder oil feed rate should be increased slightly above that used at normal sea speedC
cylinder oil feed rate should be reducedD
cylinder oil feed rate should be increased to the maximum flow capable of the metering pump
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单选题You increased the （） to 150 tons that’s why the fuel oil （）.A
pumped speed；came outB
pumping rate；overflowedC
flowing rate；leaked outD
flowed speed；spilled out
考题
单选题The best cure for smoking-related diseases is ______.A
to refuse to smokeB
to improve environmental protectionC
to stop the selling of cigarettes in shopsD
to increase taxation on tobacco
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单选题Andy and Bob are picking apples. Andy picks 16 apples per hour and Bob picks 10 apples per hour. Assuming they pick at a steady rate, after 30 minutes, how many more apples has Andy picked than has Bob?A
3B
5C
6D
8E
10
考题
单选题Doctors give less importance to the communication between patients and doctors mainly because ______.A
modem medical instruments are usedB
they can cure more diseases and save more livesC
they have much more medical experience than beforeD
they are too busy to have time to talk with patients
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