单选题According to the passage, scientists can’t observe some of the earliest steps in brain activity becausee.A those changes are subtle and masked by some reactionsB subtle changes in blood flow began earlierC the imaging techniques are out of placeD the flow of blood to increase to an area of the brain is slow

考题 According to the passage, cancers may take some healthy steps other than ________.[A] stop smoking[B] exercise regularly[C] take non-fat diet[D] control their weight

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考题 What can we infer from the first three paragraphs?A In both East and West, names are essential to success.B The alphabet is to blame for the failure of Zo Zysman.C Customers often pay a lot of attention to companies’ names.D Some form. of discrimination is too subtle to recognize.

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考题 You will be informed about any subtle changes ________ .A at the first opportunityB for the first opportunityC in the first opportunityD on the first opportunity

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考题 According to the passage, ______ can eliminate bank cheeks and the subsequent work.A．credit cardsB．some sophisticated equipmentC．computersD．a device of electronic transfer of funds

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考题 Which of the following statements is true according to the passage?A．Qigong can cure some diseases．B．Qigong can not cure any disease．C．Qigong can cure all kinds of incurable diseases．D．Qigong can cure some patients from danger．

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考题共用题干 Facts about Stroke1 Every 45 seconds,someone in America has a stroke.Every 3. 1 minutes,someonedies of one.Stroke killed an estimated 167,661 people in 2000 and is the nation's thirdleading cause of death,ranking behind diseases of the heart and all forms of cancer. Stroke is a leading cause of serious,long-term disability in the United States.2 Stroke is a type of cardiovascular（心血管的）disease. It affects the arteries（动脉）leading to and within the brain.A stroke occurs when a blood vessel that carries oxygenand nutrients（营养物）to the brain is either blocked by a clot（凝块）or bursts. Whenthat happens,part of the brain cannot get the blood(and oxygen)it needs,so it startsto die.3 The brain is an extremely complex organ that controls various body functions.If a strokeoccurs and blood flow can't reach the region that controls a particular body function,thatpart of the body won't work as it should,If the stroke occurs toward the back of the brain,for instance,It's likely to result in some disablity involving vision.The effects of a strokedepend primarily on the location of the obstruction（阻塞）and the extent of brain tissueaffected.4 The American Stroke Association has identified several factors that increase the risk ofstroke.The more risk factors a person has,the greater the chance that he or she will havea stroke.Some of these you can't control,such as increasing age,family health history, race,and prior stroke.But you can change or treat other risk factors to lower your risk.Factors resulting from lifestyle or environment can be modified with a healthcare provider's help.Some of these include:high blood pressure,current smoking,heart disease,andhigh red blood cell count.5 A stroke can happen to anyone at any moment.In fact about 600,000 people havestrokes every year. For many years,there was no hope for those suffering a stroke.However,recent breakthroughs have led to new treatments.For the treatments to work,the person must get to a hospital immediately. A person's vision is likely to be affected if a stroke________.A:suffer from a strokeB:will be affectedC:change their lifestylesD:will take placeE:occurs at the back of his/her brainF:controls various body functions

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考题共用题干第三篇 Smart ExerciseDoctors are starting to find more and more information that suggests a connection between exercise and brain development.Judy Cameron,a scientist at Oregon Health and Science University,studies brain development.According to her research,it seems that exercise can make blood vessels,including those in the brain,stronger and more fully developed.Dr. Cameron claims this allows people who exercise to concentrate better. As she says:"While we already know that exercise is good for the heart,exercise can literally cause physical changes in the brain."The effects of exercise on brain development can even be seen in babies.Babies who do activities that require a lot of movement and physical activity show greater brain development than babies who are less physically active.With babies,even a{ittle movement can show big results. Margaret Barnes , a pediatrician（儿科医师）,believes in the importance of exercise.She thinks that many learning disabilities that children have in elementary school or high school can be traced back to a lack of movement as babies. "Babies need movement that stimulates their five senses.They need to establish a connection between motion and memory.In this way,as they get older,children will begin to associate physical activity with higher learning,"says Margaret. Older people can beef up their brains as well.Cornell University studied a group of seniors ranging in age from seventy to seventy-nine. Their study showed a short-term memory increase of up to 40 percent after exercising just three hours a week.The exercise does not have to be very difficult,but it does have to increase the heart rate.Also,just like the motion for infants,exercise for older people should involve some complexity.Learning some new skills or motions helps to open up memory paths in the brain that may not havebeen used for a long time.For most people,any type of physical activity that increases the heart rate is helpful. The main goal is to increase the brain's flow of blood.And your brain can benefit from as little as two to three hours of exercise a week. To be beneficial,exercise for older people shouldA:be done in a group. B: be done on a daily basis.C: involve great difficulty. D:increase the heart rate.

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考题共用题干第三篇 Smart ExerciseDoctors are starting to find more and more information that suggests a connection between exercise and brain development.Judy Cameron,a scientist at Oregon Health and Science University,studies brain development.According to her research,it seems that exercise can make blood vessels,including those in the brain,stronger and more fully developed.Dr. Cameron claims this allows people who exercise to concentrate better. As she says:"While we already know that exercise is good for the heart,exercise can literally cause physical changes in the brain."The effects of exercise on brain development can even be seen in babies.Babies who do activities that require a lot of movement and physical activity show greater brain development than babies who are less physically active.With babies,even a{ittle movement can show big results. Margaret Barnes , a pediatrician（儿科医师）,believes in the importance of exercise.She thinks that many learning disabilities that children have in elementary school or high school can be traced back to a lack of movement as babies. "Babies need movement that stimulates their five senses.They need to establish a connection between motion and memory.In this way,as they get older,children will begin to associate physical activity with higher learning,"says Margaret. Older people can beef up their brains as well.Cornell University studied a group of seniors ranging in age from seventy to seventy-nine. Their study showed a short-term memory increase of up to 40 percent after exercising just three hours a week.The exercise does not have to be very difficult,but it does have to increase the heart rate.Also,just like the motion for infants,exercise for older people should involve some complexity.Learning some new skills or motions helps to open up memory paths in the brain that may not havebeen used for a long time.For most people,any type of physical activity that increases the heart rate is helpful. The main goal is to increase the brain's flow of blood.And your brain can benefit from as little as two to three hours of exercise a week. Research by Dr.Cameron seems to suggest that exercise canA: generate new blood vessels. B:change the way a person thinks.C: promote brain development. D: divert one's attention.

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考题共用题干第二篇Exercise and BrainJust as exercise strengthens the heart and lungs,bones and muscles,it may also power up the brain.A succession of scientific studies of animals implies that physical activity has a positive effect on mental functioning."It's clear that the brain benefits from exercise,"says brain scientist William Greenough of the University of Illinois at Urbana-Champaign.His studies with rats have demonstrated two primary effects of activity:Vigorous physical exercise provides the brain with more fuel,and skill-based ex-ercise increases the formation of connections in the brain, which, according to the proposals of some scientists,may make the brain better able to process information.In one experiment,laboratory rats were separated into three groups.One group was exercised by running inside an automatic wheel,a second group improved their skills in a complicated obstacle course,and a third group was inactive."The animals that learned to go through the obstacle course exhibited a greater number of brain connections than the animals in the exercised or inactive groups,"Greenough said."In contrast, the animals that exercised inside the automatic wheel possessed a greater density of blood vessels in the brain than did either of the other two groups of animals."Learning a new dance step may boost the brain in the same way that learning a language can, he says.And if the dance is a good physical exercise as well,the benefits multiply.Young brains may be especially able to boost brain power through exercise,suggested another of Greenough's experiments that showed the most significant changes in the brain occurred among rats that had been exercised when very young.And while animals aren't people,he says it is logical to make the inference that an effect found in rats may also apply to humans.Human studies have focused primarily on older adults and suggest that regular exercise can improve the speed with which the brain processes information.Measurements made by Arthur Kramer at the University of Illinois demonstrated that inactive adults,aged 63 to 82,could hit buttons faster in response to a tone after they went through a 10-week water exercise course.A corresponding control group that didn't exercise showed no improvement.According to the passage what is not the advantage of physical exercises?A:do good to our mental health. B:strengthen our hearts and lungs.C:strengthen our bones and muscles. D:help us lose weight.

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考题共用题干第三篇 Smart ExerciseDoctors are starting to find more and more information that suggests a connection between exercise and brain development.Judy Cameron,a scientist at Oregon Health and Science University,studies brain development.According to her research,it seems that exercise can make blood vessels,including those in the brain,stronger and more fully developed.Dr. Cameron claims this allows people who exercise to concentrate better. As she says:"While we already know that exercise is good for the heart,exercise can literally cause physical changes in the brain."The effects of exercise on brain development can even be seen in babies.Babies who do activities that require a lot of movement and physical activity show greater brain development than babies who are less physically active.With babies,even a{ittle movement can show big results. Margaret Barnes , a pediatrician（儿科医师）,believes in the importance of exercise.She thinks that many learning disabilities that children have in elementary school or high school can be traced back to a lack of movement as babies. "Babies need movement that stimulates their five senses.They need to establish a connection between motion and memory.In this way,as they get older,children will begin to associate physical activity with higher learning,"says Margaret. Older people can beef up their brains as well.Cornell University studied a group of seniors ranging in age from seventy to seventy-nine. Their study showed a short-term memory increase of up to 40 percent after exercising just three hours a week.The exercise does not have to be very difficult,but it does have to increase the heart rate.Also,just like the motion for infants,exercise for older people should involve some complexity.Learning some new skills or motions helps to open up memory paths in the brain that may not havebeen used for a long time.For most people,any type of physical activity that increases the heart rate is helpful. The main goal is to increase the brain's flow of blood.And your brain can benefit from as little as two to three hours of exercise a week.Margaret Barnes thinks that a lack of movement in infancy canA:lead to learning troubles later. B:cause physical disabilities later.C:stimulate the five senses. D:bring about changes in the brain.

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考题共用题干 Facts about Stroke1 Every 45 seconds,someone in America has a stroke.Every 3. 1 minutes,someonedies of one.Stroke killed an estimated 167,661 people in 2000 and is the nation's thirdleading cause of death,ranking behind diseases of the heart and all forms of cancer. Stroke is a leading cause of serious,long-term disability in the United States.2 Stroke is a type of cardiovascular（心血管的）disease. It affects the arteries（动脉）leading to and within the brain.A stroke occurs when a blood vessel that carries oxygenand nutrients（营养物）to the brain is either blocked by a clot（凝块）or bursts. Whenthat happens,part of the brain cannot get the blood(and oxygen)it needs,so it startsto die.3 The brain is an extremely complex organ that controls various body functions.If a strokeoccurs and blood flow can't reach the region that controls a particular body function,thatpart of the body won't work as it should,If the stroke occurs toward the back of the brain,for instance,It's likely to result in some disablity involving vision.The effects of a strokedepend primarily on the location of the obstruction（阻塞）and the extent of brain tissueaffected.4 The American Stroke Association has identified several factors that increase the risk ofstroke.The more risk factors a person has,the greater the chance that he or she will havea stroke.Some of these you can't control,such as increasing age,family health history, race,and prior stroke.But you can change or treat other risk factors to lower your risk.Factors resulting from lifestyle or environment can be modified with a healthcare provider's help.Some of these include:high blood pressure,current smoking,heart disease,andhigh red blood cell count.5 A stroke can happen to anyone at any moment.In fact about 600,000 people havestrokes every year. For many years,there was no hope for those suffering a stroke.However,recent breakthroughs have led to new treatments.For the treatments to work,the person must get to a hospital immediately. When a stroke occurs,the arteries leading to and within the brain______.A:suffer from a strokeB:will be affectedC:change their lifestylesD:will take placeE:occurs at the back of his/her brainF:controls various body functions

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考题共用题干第二篇Exercise and BrainJust as exercise strengthens the heart and lungs,bones and muscles,it may also power up the brain.A succession of scientific studies of animals implies that physical activity has a positive effect on mental functioning."It's clear that the brain benefits from exercise,"says brain scientist William Greenough of the University of Illinois at Urbana-Champaign.His studies with rats have demonstrated two primary effects of activity:Vigorous physical exercise provides the brain with more fuel,and skill-based ex-ercise increases the formation of connections in the brain, which, according to the proposals of some scientists,may make the brain better able to process information.In one experiment,laboratory rats were separated into three groups.One group was exercised by running inside an automatic wheel,a second group improved their skills in a complicated obstacle course,and a third group was inactive."The animals that learned to go through the obstacle course exhibited a greater number of brain connections than the animals in the exercised or inactive groups,"Greenough said."In contrast, the animals that exercised inside the automatic wheel possessed a greater density of blood vessels in the brain than did either of the other two groups of animals."Learning a new dance step may boost the brain in the same way that learning a language can, he says.And if the dance is a good physical exercise as well,the benefits multiply.Young brains may be especially able to boost brain power through exercise,suggested another of Greenough's experiments that showed the most significant changes in the brain occurred among rats that had been exercised when very young.And while animals aren't people,he says it is logical to make the inference that an effect found in rats may also apply to humans.Human studies have focused primarily on older adults and suggest that regular exercise can improve the speed with which the brain processes information.Measurements made by Arthur Kramer at the University of Illinois demonstrated that inactive adults,aged 63 to 82,could hit buttons faster in response to a tone after they went through a 10-week water exercise course.A corresponding control group that didn't exercise showed no improvement.According to passage,what can not boost the brain?A:A new dance step.B:A dance which is a good physical exercise as well.C:Running on an automatic wheel.D:Being inactive inside.

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考题共用题干 Facts about Stroke1 Every 45 seconds,someone in America has a stroke.Every 3. 1 minutes,someonedies of one.Stroke killed an estimated 167,661 people in 2000 and is the nation's thirdleading cause of death,ranking behind diseases of the heart and all forms of cancer. Stroke is a leading cause of serious,long-term disability in the United States.2 Stroke is a type of cardiovascular（心血管的）disease. It affects the arteries（动脉）leading to and within the brain.A stroke occurs when a blood vessel that carries oxygenand nutrients（营养物）to the brain is either blocked by a clot（凝块）or bursts. Whenthat happens,part of the brain cannot get the blood(and oxygen)it needs,so it startsto die.3 The brain is an extremely complex organ that controls various body functions.If a strokeoccurs and blood flow can't reach the region that controls a particular body function,thatpart of the body won't work as it should,If the stroke occurs toward the back of the brain,for instance,It's likely to result in some disablity involving vision.The effects of a strokedepend primarily on the location of the obstruction（阻塞）and the extent of brain tissueaffected.4 The American Stroke Association has identified several factors that increase the risk ofstroke.The more risk factors a person has,the greater the chance that he or she will havea stroke.Some of these you can't control,such as increasing age,family health history, race,and prior stroke.But you can change or treat other risk factors to lower your risk.Factors resulting from lifestyle or environment can be modified with a healthcare provider's help.Some of these include:high blood pressure,current smoking,heart disease,andhigh red blood cell count.5 A stroke can happen to anyone at any moment.In fact about 600,000 people havestrokes every year. For many years,there was no hope for those suffering a stroke.However,recent breakthroughs have led to new treatments.For the treatments to work,the person must get to a hospital immediately. Some people can reduce their risk of stroke if they_______.A:suffer from a strokeB:will be affectedC:change their lifestylesD:will take placeE:occurs at the back of his/her brainF:controls various body functions

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考题共用题干第二篇Exercise and BrainJust as exercise strengthens the heart and lungs,bones and muscles,it may also power up the brain.A succession of scientific studies of animals implies that physical activity has a positive effect on mental functioning."It's clear that the brain benefits from exercise,"says brain scientist William Greenough of the University of Illinois at Urbana-Champaign.His studies with rats have demonstrated two primary effects of activity:Vigorous physical exercise provides the brain with more fuel,and skill-based ex-ercise increases the formation of connections in the brain, which, according to the proposals of some scientists,may make the brain better able to process information.In one experiment,laboratory rats were separated into three groups.One group was exercised by running inside an automatic wheel,a second group improved their skills in a complicated obstacle course,and a third group was inactive."The animals that learned to go through the obstacle course exhibited a greater number of brain connections than the animals in the exercised or inactive groups,"Greenough said."In contrast, the animals that exercised inside the automatic wheel possessed a greater density of blood vessels in the brain than did either of the other two groups of animals."Learning a new dance step may boost the brain in the same way that learning a language can, he says.And if the dance is a good physical exercise as well,the benefits multiply.Young brains may be especially able to boost brain power through exercise,suggested another of Greenough's experiments that showed the most significant changes in the brain occurred among rats that had been exercised when very young.And while animals aren't people,he says it is logical to make the inference that an effect found in rats may also apply to humans.Human studies have focused primarily on older adults and suggest that regular exercise can improve the speed with which the brain processes information.Measurements made by Arthur Kramer at the University of Illinois demonstrated that inactive adults,aged 63 to 82,could hit buttons faster in response to a tone after they went through a 10-week water exercise course.A corresponding control group that didn't exercise showed no improvement.Which statement is correct according to the passage?A:The effect of exercises found in rats can not apply to people.B:Changes in the brain occurred among young rats are more significant than those among adult rats.C:Regular exercise can only improve the speed with which the older adults' brain processes information.D:The author encourages people do more skill-based exercise instead of vigorous physical exercise.

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考题共用题干第三篇 Smart ExerciseDoctors are starting to find more and more information that suggests a connection between exercise and brain development.Judy Cameron,a scientist at Oregon Health and Science University,studies brain development.According to her research,it seems that exercise can make blood vessels,including those in the brain,stronger and more fully developed.Dr. Cameron claims this allows people who exercise to concentrate better. As she says:"While we already know that exercise is good for the heart,exercise can literally cause physical changes in the brain."The effects of exercise on brain development can even be seen in babies.Babies who do activities that require a lot of movement and physical activity show greater brain development than babies who are less physically active.With babies,even a{ittle movement can show big results. Margaret Barnes , a pediatrician（儿科医师）,believes in the importance of exercise.She thinks that many learning disabilities that children have in elementary school or high school can be traced back to a lack of movement as babies. "Babies need movement that stimulates their five senses.They need to establish a connection between motion and memory.In this way,as they get older,children will begin to associate physical activity with higher learning,"says Margaret. Older people can beef up their brains as well.Cornell University studied a group of seniors ranging in age from seventy to seventy-nine. Their study showed a short-term memory increase of up to 40 percent after exercising just three hours a week.The exercise does not have to be very difficult,but it does have to increase the heart rate.Also,just like the motion for infants,exercise for older people should involve some complexity.Learning some new skills or motions helps to open up memory paths in the brain that may not havebeen used for a long time.For most people,any type of physical activity that increases the heart rate is helpful. The main goal is to increase the brain's flow of blood.And your brain can benefit from as little as two to three hours of exercise a week.The title of the passage implies thatA:only smart people do exercise. B: exercise can be smart or stupid.C:exercise keeps the brain strong. D:it is fashionable to do exercise.

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考题 It can be inferred from the passage that( ) A.Dickens’s hatred toward London grew with his age B.Dickens ’s works contributed to some of the changes of London C.Dickens liked to portray only the dark sides of London D.Dickens，a social reformer，was devoted to the changes of London

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考题 The author implies that scientists develop a healthy skepticism because they are aware that( ) A.some factors in most situations must remain unknown B.changes in axiomatic propositions will inevitably undermine scientific arguments C.well-defined situations are necessary for the design of reliable experiments D.mathematical solutions can rarely be applied to real problems

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考题单选题The company has（）some major changes in the last five years.A stoodB sufferedC undergoneD tolerated

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考题单选题According to the passage, which of the following statements is TRUE?A Different aspects（方面）of an urban environment, such as the crowded streets, can lead to an increase in self control.B Small changes in urban design cannot reduce the negative side effects of city life.C For the first time in history, the earth's population is more urban than rural.D A walk down a busy city street will improve brain performance.

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考题单选题Researchers find that when a person tells lies_______.A his blood pressure increases measurablyB he looks very seriousC he tends to make some small changes in his behaviorD he uses his unconscious mind

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考题单选题According to the passage, why couldn’t PET and functional M. R. I. scans detect subtle changes in blood flow earlier?A Because there is early oxygen transfer.B Because they do not form their images quickly enough to follow such rapid changes.C Because researchers control the changes in blood flow.D Because early oxygen transfer gives the flow blood energy.

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考题单选题What’s the advantage of studying exposed brain?A It can help capture the earliest events of the brain.B It can help researchers use the highest possible resolution to observe the events.C It can help researchers find the indirect imaging methods that track neural activity through the skull.D It lets researchers study the electrical activity and the blood flow in detail.

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考题单选题What can music do to an instrumentalist according to the passage?A Music can lead to the enlargement of all the layers of gray.B Music can cause the brain to emit magnetic field.C Music can stimulate to some degree the change of brain structure.D Music can trigger physical change when he / she is playing the instrument.

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考题单选题According to this passage, _____.A the game plan for keeping brain cells sparking doesn’t work for everyoneB Dr. Small’s memory tests can show you what to do about brain agingC Dr. Small’s advice can help us fight brain aging effectivelyD our brains can reconstruct memories themselves

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考题单选题Which of the following can be used as the title of the passage?A Study of Human BrainsB Imaging TechniquesC Contribution of Israeli ResearchersD Fine-tuning Imaging of Brain Activity

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考题单选题Which of the following statements is NOT true?A The increase in blood masked some of the subtle changes.B It took three seconds after an event for the flow of blood to increase to an area of the brain.C The body’s reaction was like watering the entire garden for the sake of one thirsty flower.D Researchers will use new methods to study human brains because of the limit of conventional imaging techniques.

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考题单选题According to the passage, which of the following statements is true?A The imaging techniques not only measure nerve-cell activity but also the extra flow of blood that surges to the most active brain areas.B The imaging techniques do not measure nerve-cell activity directly, but measure the flow of blood that surges to the most active brain areas.C The imaging techniques measure the extra flow of blood that surges to the most active brain areas.D The imaging techniques measure all the activities of the living brain.

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