判断题The new generation of drugs stop tumours and kill all rapidly proliferating cells, but they also cause side effects.A对B错
判断题
The new generation of drugs stop tumours and kill all rapidly proliferating cells, but they also cause side effects.
A
对
B
错
参考解析
解析：
录音中描述到目前多数治疗方法（20世纪70年代研发出来的药物）只是杀死分裂细胞，这阻止了肿瘤（tumours）的生长，但是也会杀死所有增生的细胞。录音中接着指出“The action of these drugs on normal tissues causes the side effects”，可见这些药物在正常组织上发生作用会导致产生副作用。题干中并未指出这种副作用产生的条件。
【录音原文】
Most current therapies—drugs that were developed during the first golden era, in the 1970s—simply attack dividing cells. That stops tumours, but it also kills all rapidly proliferating cells, regardless of their origin, function or state of health. The action of these drugs on normal tissues causes the side effects, including nausea, fatigue and weakened immune systems, associated with cancer treatment. By contrast, the new generation of drugs, several of which are already in the clinic, attack only deranged cells. These drugs are designed to fix the specific molecular problems in a tumour that drive its growth.
录音中描述到目前多数治疗方法（20世纪70年代研发出来的药物）只是杀死分裂细胞，这阻止了肿瘤（tumours）的生长，但是也会杀死所有增生的细胞。录音中接着指出“The action of these drugs on normal tissues causes the side effects”，可见这些药物在正常组织上发生作用会导致产生副作用。题干中并未指出这种副作用产生的条件。
【录音原文】
Most current therapies—drugs that were developed during the first golden era, in the 1970s—simply attack dividing cells. That stops tumours, but it also kills all rapidly proliferating cells, regardless of their origin, function or state of health. The action of these drugs on normal tissues causes the side effects, including nausea, fatigue and weakened immune systems, associated with cancer treatment. By contrast, the new generation of drugs, several of which are already in the clinic, attack only deranged cells. These drugs are designed to fix the specific molecular problems in a tumour that drive its growth.
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共用题干What Is Cancer?Cancer is actually a group of many related diseases that all have to do with cells.Cells are the very small units that make up all________(1)things,including the human body.There are billions of cells________(2)each person's body.Cancer happens when cells that are not normal grow________(3)spread veryfast.Normal body cells grow and divide and know when to stop growing.Over time,they also die._______(4)these normal cells,cancer cells just continue to grow and divide out of control and don't die.Cancer cells usually group together to form tumors（肿瘤）.A growing tumor becomes a lump of cancer cells_________(5)can destroy the normal cells around the_________(6)and damage the body's healthy tissues.Thiscan make someone very _______(7).Sometimes cancer cells break away from the original tumor and travel to other areas of the________(8),where they keep growing and can go on to form new tumors.This is how cancer__________(9).The spread of a tumor to a new place in the body is __________(10)metastasis（转移）.People with cancer may feel pretty sick at times一but can usually still do lots of normal things._________(11)they are very sick,kids and teenagers with cancer may still be able to go to school. They may be tired or bruise（出现青肿）easily, but they __________( 1 2) sometimes go to camp , movies , and sleepover（在外过夜的）parties. People with cancer still like the same things they did__________(13)they got sick.Cancer in kids is rare一but today,many kids who do get cancer go on living normal lives.The number of kids who beat cancer goes________(14)every year because of new cancer treatments.So a lot of kids with cancer will some day drive cars,go to college, have careers,and even get_________(15)and have families of their own._________(1) A:living B:nice C: big D: whole
共用题干Some Sleep Drugs Do More Than Make You SleepThe United States Food and Drug Administration(FDA)has ordered companies to place strong new warnings on thirteen drugs that treat sleep disorders.It also ordered the makers of the sleeping pills to provide information for patients explaining how to safely use the drugs.Last Wednesday,the FDA announced that some of these drugs can have unexpected and dangerouseffects.These include the risk of life-threatening allergic（过敏性的）reactions.They also include rareincidents of strange behavior.These include people cooking food,eating and even driving while asleep.The patients later had no memory of doing these activities while asleep.Last year,a member of the United States Congress said he had a sleep-driving incident.PatrickKennedy , a representative from Rhode Island,crashed his car into a security barrier near the building wherelawmakers meet.The accident happened in the middle of the night and no one was hurt.Mr.Kennedy saidhe had earlier taken a sleep medicine.He said he was also being treated with a stomach sickness drug thatcan cause sleepiness.The FDA did not say in its announcement how many cases of sleep-driving it has documented.However,the New York Times reported last year about people who said they had strange sleep events after taking the drug Ambien.Some reported sleep-driving and sleep-walking.Others said they found evidence after waking in the morning that they had cooked food or eaten in their sleep.But they had no memory of carrying out the activities.An FDA official says that these serious side effects of sleep disorder drugs appear to be rare.But,he also said there are probably more cases than are reported.He said the agency believes the risk of such behaviors could be reduced if people take the drugs as directed and do not drink alcohol while taking the drugs.The FDA has advised drug companies to carry out studies to investigate the problem.After taking the drug Ambien,some people______.A:are unable to driveB:don't know how to cookC:suffer from eating problemsD:fall asleep while walking
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共用题干Some Sleep Drugs Do More Than Make You SleepThe United States Food and Drug Administration(FDA)has ordered companies to place strong new warnings on thirteen drugs that treat sleep disorders.It also ordered the makers of the sleeping pills to provide information for patients explaining how to safely use the drugs.Last Wednesday,the FDA announced that some of these drugs can have unexpected and dangerouseffects.These include the risk of life-threatening allergic（过敏性的）reactions.They also include rareincidents of strange behavior.These include people cooking food,eating and even driving while asleep.The patients later had no memory of doing these activities while asleep.Last year,a member of the United States Congress said he had a sleep-driving incident.PatrickKennedy , a representative from Rhode Island,crashed his car into a security barrier near the building wherelawmakers meet.The accident happened in the middle of the night and no one was hurt.Mr.Kennedy saidhe had earlier taken a sleep medicine.He said he was also being treated with a stomach sickness drug thatcan cause sleepiness.The FDA did not say in its announcement how many cases of sleep-driving it has documented.However,the New York Times reported last year about people who said they had strange sleep events after taking the drug Ambien.Some reported sleep-driving and sleep-walking.Others said they found evidence after waking in the morning that they had cooked food or eaten in their sleep.But they had no memory of carrying out the activities.An FDA official says that these serious side effects of sleep disorder drugs appear to be rare.But,he also said there are probably more cases than are reported.He said the agency believes the risk of such behaviors could be reduced if people take the drugs as directed and do not drink alcohol while taking the drugs.The FDA has advised drug companies to carry out studies to investigate the problem.The risk of strange behaviors resulting from taking sleeping pills could be reduced if______.A:the FDA takes more strict regulationsB:drug companies listen to patients’adviceC:the New York Times releases more reports D:people don't drink alcohol whlie taking these pills
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共用题干Learning DisabilitiesLearning disabilities are very common.They affect perhaps 1 0 percent of all children.Four times as many boys as girls have learning disabilities.Since about 1970,new research has helped brain scientists understand these problems better.Scientists now know there are many different kinds of learning disabilities and that they are caused by many different things.There is no longer any question that all learning disabilities result from differences in the way the brain is organized.You cannot look at a child and tell if he or she has a learning disability.There is no outward sign of the disorder.So some researchers began looking at the brain itself to learn what might be wrong.In one study,researchers examined the brain of a learning-disabled person who had died in an accident. They found two unusual things.One involved cells in the left side of the brain,which control language.These cells normally are white.In the learning disabled person,however,these cells were gray.The researchers also found that many of the nerve cells were not in a line the way they should have been.The nerve cells were mixed together.The study was carried out under the guidance of Norman Geschwind,an early expert on learning disabilities, Doctor Geschwind proposed that learning disabilities resulted mainly from problems in the left side of the brain. He believed this side of the brain failed to develop normally.Probably,he said,nerve cells there did not connect as they should.So the brain was like an electrical device in which the wires were crossed.Other researchers did not examine brain tissue.Instead,they measured the brain's electrical activity and made a map of the electrical signals.Frank Dully experimented with this technique at Children's Hospital Medical Center in Boston.Doctor Dully found large differences in the brain activity of normal children and those with reading problems.The differences appeared throughout the brain.Doctor Dully said his research is evidence that disabilities involve damage to a wide area of the brain,not just the left side.Doctor Dully believed that______.A:he found the exact cause of learning disabilitiesB:the problem of learning disabilities did not lie in the left side of the brainC:the problem of learning disabilities resulted from the left side of the brainD:the problem of learning disabilities was not limited to the left side of the brain
共用题干Learning DisabilitiesLearning disabilities are very common.They affect perhaps 1 0 percent of all children.Four times as many boys as girls have learning disabilities.Since about 1970,new research has helped brain scientists understand these problems better.Scientists now know there are many different kinds of learning disabilities and that they are caused by many different things.There is no longer any question that all learning disabilities result from differences in the way the brain is organized.You cannot look at a child and tell if he or she has a learning disability.There is no outward sign of the disorder.So some researchers began looking at the brain itself to learn what might be wrong.In one study,researchers examined the brain of a learning-disabled person who had died in an accident. They found two unusual things.One involved cells in the left side of the brain,which control language.These cells normally are white.In the learning disabled person,however,these cells were gray.The researchers also found that many of the nerve cells were not in a line the way they should have been.The nerve cells were mixed together.The study was carried out under the guidance of Norman Geschwind,an early expert on learning disabilities, Doctor Geschwind proposed that learning disabilities resulted mainly from problems in the left side of the brain. He believed this side of the brain failed to develop normally.Probably,he said,nerve cells there did not connect as they should.So the brain was like an electrical device in which the wires were crossed.Other researchers did not examine brain tissue.Instead,they measured the brain's electrical activity and made a map of the electrical signals.Frank Dully experimented with this technique at Children's Hospital Medical Center in Boston.Doctor Dully found large differences in the brain activity of normal children and those with reading problems.The differences appeared throughout the brain.Doctor Dully said his research is evidence that disabilities involve damage to a wide area of the brain,not just the left side.According to the passage we can conclude that further researches should be made______.A:to help learning-disabled children to develop their intelligenceB:to study how children learn to read and write,and use numbersC:to investigate possible influences on brain development and organizationD:to explore how the left side of the brain functions in language learning
共用题干Learning DisabilitiesLearning disabilities are very common.They affect perhaps 1 0 percent of all children.Four times as many boys as girls have learning disabilities.Since about 1970,new research has helped brain scientists understand these problems better.Scientists now know there are many different kinds of learning disabilities and that they are caused by many different things.There is no longer any question that all learning disabilities result from differences in the way the brain is organized.You cannot look at a child and tell if he or she has a learning disability.There is no outward sign of the disorder.So some researchers began looking at the brain itself to learn what might be wrong.In one study,researchers examined the brain of a learning-disabled person who had died in an accident. They found two unusual things.One involved cells in the left side of the brain,which control language.These cells normally are white.In the learning disabled person,however,these cells were gray.The researchers also found that many of the nerve cells were not in a line the way they should have been.The nerve cells were mixed together.The study was carried out under the guidance of Norman Geschwind,an early expert on learning disabilities, Doctor Geschwind proposed that learning disabilities resulted mainly from problems in the left side of the brain. He believed this side of the brain failed to develop normally.Probably,he said,nerve cells there did not connect as they should.So the brain was like an electrical device in which the wires were crossed.Other researchers did not examine brain tissue.Instead,they measured the brain's electrical activity and made a map of the electrical signals.Frank Dully experimented with this technique at Children's Hospital Medical Center in Boston.Doctor Dully found large differences in the brain activity of normal children and those with reading problems.The differences appeared throughout the brain.Doctor Dully said his research is evidence that disabilities involve damage to a wide area of the brain,not just the left side.All of the following statements are true EXCEPT that______.A:many factors account for learning disorderB:a learning-disabled person shows no outward signsC:reading disabilities are a common problem that affects 10 percent of the populationD:the brain activity of learning-disabled children is different from that of normal children
共用题干LeukemiaLeukemia is the most common type of cancer kids get,but it is still very rare.Leukemia involves the blood and blood-forming organs,such as the bone marrow.________(46)A kid with leukemia produces lots of abnormal white blood cells in the bone marrow. Usually,white blood cells fight infection,but the white blood cells in a person with leukemia don't work the way they're supposed to.________(47)The abnormal white blood cells multiply out of control,filling the bone marrow and making it hard for enough normal,infection-fighting white blood cells to form.Other blood cells一such asred blood cells(that carry oxygen in the blood to the body's tissues)and platelets(that allow blood to clot）一are also crowded out by the white blood cells of leukemia. These cancer cells may also move to other parts of the body,including the bloodstream,where they continue to multiply and build up.Although leukemia can make kids sick,most of the time it is treatable,and kids get better. Almost all leukemia patients are treated with chemotherapy,which means using anti-cancer drug.________(48)Chemotherapy quickly goes to work,traveling through the blood to the bone marrow. There,the drugs can attack the cancer cells.After several weeks of chemotherapy,many kids begin to feel better.Some children with leukemia will also have to have radiation therapy,too.________(49)If the cancer isn't getting better from using the usual amounts of chemotherapy and radiation,then a kid with leukemia will probably need more treatment一with higher doses of chemotherapy and radiation to finally kill the cancer cells.But this heavy-duty treatment will also harm the normal cells in the kid's bone marrow too,and the bone marrow will no longer be able to produce normal blood cells.So,doctors will then give a kid一or anyone else with bone marrow that is no longer working一normal bone marrow tissue from someone else who is healthy.________(50)___________（50）A:The chemotherapy drugs are given through a catheter,a narrow tube that is inserted into a blood vessel, sometimes in the kid's upper chest.B:Early symptoms of leukemia are often overlooked,since they may resemble symptoms of the flu or other common diseases.C:This is a special procedure called a bone marrow transplant,and it helps the patient make new blood cells so they can recover from the leukemia.D:Bone marrow is the innermost part of some bones where blood cells are first made.E:They don't protect the person from infections very well.F: Radiation therapy uses invisible high-energy waves(similar to X-rays)to kill cancerous cells.
共用题干Relieving the Pain"Exercise may be the best treatment of chronic pain,"say doctors at a new clinic for dealing with pain. "People with chronic pain need to stop lying around,go out more,and start exercising."The instinctive reac-tion to acute pain is to stop moving and to try to protect the source of pain.But it seems that this is often not productive,especially in the case of back pain.Back pain,after headaches and tiredness,has become the third most common reason for people to visit their doctors.Painful backs now account for millions of days offwork.Lumbar（腰部的）pains are partly the price humans pay for taking their forelimbs off the ground , but they are made worse by a sedentary（久坐不动的）lifestyle. Lack of exercise slowly decreases the flexibility and strength of muscles,so that it is more difficult to take pressure off the site of pain.Exercise is essential. It releases endorphins（内啡肤）,the body's " feel-good " chemicals , which are natural painkillers. In fact, these are so important that researchers are now looking for drugs that can maintain a comfortable level of en- dorphins in the body.Most people who go to a family doctor complaining of pain are prescribed pain-killing drugs rather than exercise.Since finding the cause of backache is not so easy,doctors frequently do not know the precise cause of the discomfort,and as the pain continues,sufferers end up taking stronger doses or a series of different drugs."It's crazy,"says Dr. Brasseur,a therapist at the International Association for the Study of Pain. "Some of them are taking different drugs prescribed by different doctors.I've just seen a patient who was tak- ing two drugs which turned out to be the same thing under different names."A generation of new pain clinics now operates on the basis that drugs are best avoided.Once patients have undergone the initial physical and psychological check up,their medication is cut down as much as pos- sible.Taking patients off drugs also prepares them for physical activity.In some pain-relief clinics,patients begin the day with muscle contraction and relaxation exercises,fol- lowed by an hour on exercise bikes. Later in the day , they practice tai chi（太极）,self-defense , and deep thought. This compares with an average of two-and-a-half hours' physiotherapy（理疗）a week in a traditional hospital program."The idea is to strengthen and to increase long-lasting energy,flexibility,and confidence," explains Bill Wiles,a consultant pain doctor in Liverpool."Patients undergoing this therapy get back to work and resume healthy active lifestyles much sooner than those subjected to more conservative treatment."Doctors often use drugs such as endorphins to treat patients.A:RightB:WrongC:Not mentioned
共用题干Relieving the Pain"Exercise may be the best treatment of chronic pain,"say doctors at a new clinic for dealing with pain. "People with chronic pain need to stop lying around,go out more,and start exercising."The instinctive reac-tion to acute pain is to stop moving and to try to protect the source of pain.But it seems that this is often not productive,especially in the case of back pain.Back pain,after headaches and tiredness,has become the third most common reason for people to visit their doctors.Painful backs now account for millions of days offwork.Lumbar（腰部的）pains are partly the price humans pay for taking their forelimbs off the ground , but they are made worse by a sedentary（久坐不动的）lifestyle. Lack of exercise slowly decreases the flexibility and strength of muscles,so that it is more difficult to take pressure off the site of pain.Exercise is essential. It releases endorphins（内啡肤）,the body's " feel-good " chemicals , which are natural painkillers. In fact, these are so important that researchers are now looking for drugs that can maintain a comfortable level of en- dorphins in the body.Most people who go to a family doctor complaining of pain are prescribed pain-killing drugs rather than exercise.Since finding the cause of backache is not so easy,doctors frequently do not know the precise cause of the discomfort,and as the pain continues,sufferers end up taking stronger doses or a series of different drugs."It's crazy,"says Dr. Brasseur,a therapist at the International Association for the Study of Pain. "Some of them are taking different drugs prescribed by different doctors.I've just seen a patient who was tak- ing two drugs which turned out to be the same thing under different names."A generation of new pain clinics now operates on the basis that drugs are best avoided.Once patients have undergone the initial physical and psychological check up,their medication is cut down as much as pos- sible.Taking patients off drugs also prepares them for physical activity.In some pain-relief clinics,patients begin the day with muscle contraction and relaxation exercises,fol- lowed by an hour on exercise bikes. Later in the day , they practice tai chi（太极）,self-defense , and deep thought. This compares with an average of two-and-a-half hours' physiotherapy（理疗）a week in a traditional hospital program."The idea is to strengthen and to increase long-lasting energy,flexibility,and confidence," explains Bill Wiles,a consultant pain doctor in Liverpool."Patients undergoing this therapy get back to work and resume healthy active lifestyles much sooner than those subjected to more conservative treatment."New pain clinics ask patients to give up drugs completely.A:RightB:WrongC:Not mentioned
共用题干Relieving the Pain"Exercise may be the best treatment of chronic pain,"say doctors at a new clinic for dealing with pain. "People with chronic pain need to stop lying around,go out more,and start exercising."The instinctive reac-tion to acute pain is to stop moving and to try to protect the source of pain.But it seems that this is often not productive,especially in the case of back pain.Back pain,after headaches and tiredness,has become the third most common reason for people to visit their doctors.Painful backs now account for millions of days offwork.Lumbar（腰部的）pains are partly the price humans pay for taking their forelimbs off the ground , but they are made worse by a sedentary（久坐不动的）lifestyle. Lack of exercise slowly decreases the flexibility and strength of muscles,so that it is more difficult to take pressure off the site of pain.Exercise is essential. It releases endorphins（内啡肤）,the body's " feel-good " chemicals , which are natural painkillers. In fact, these are so important that researchers are now looking for drugs that can maintain a comfortable level of en- dorphins in the body.Most people who go to a family doctor complaining of pain are prescribed pain-killing drugs rather than exercise.Since finding the cause of backache is not so easy,doctors frequently do not know the precise cause of the discomfort,and as the pain continues,sufferers end up taking stronger doses or a series of different drugs."It's crazy,"says Dr. Brasseur,a therapist at the International Association for the Study of Pain. "Some of them are taking different drugs prescribed by different doctors.I've just seen a patient who was tak- ing two drugs which turned out to be the same thing under different names."A generation of new pain clinics now operates on the basis that drugs are best avoided.Once patients have undergone the initial physical and psychological check up,their medication is cut down as much as pos- sible.Taking patients off drugs also prepares them for physical activity.In some pain-relief clinics,patients begin the day with muscle contraction and relaxation exercises,fol- lowed by an hour on exercise bikes. Later in the day , they practice tai chi（太极）,self-defense , and deep thought. This compares with an average of two-and-a-half hours' physiotherapy（理疗）a week in a traditional hospital program."The idea is to strengthen and to increase long-lasting energy,flexibility,and confidence," explains Bill Wiles,a consultant pain doctor in Liverpool."Patients undergoing this therapy get back to work and resume healthy active lifestyles much sooner than those subjected to more conservative treatment."Backache sufferers often end up taking more than one drug to kill pain.A:RightB:WrongC:Not mentioned
共用题干Relieving the Pain"Exercise may be the best treatment of chronic pain,"say doctors at a new clinic for dealing with pain. "People with chronic pain need to stop lying around,go out more,and start exercising."The instinctive reac-tion to acute pain is to stop moving and to try to protect the source of pain.But it seems that this is often not productive,especially in the case of back pain.Back pain,after headaches and tiredness,has become the third most common reason for people to visit their doctors.Painful backs now account for millions of days offwork.Lumbar（腰部的）pains are partly the price humans pay for taking their forelimbs off the ground , but they are made worse by a sedentary（久坐不动的）lifestyle. Lack of exercise slowly decreases the flexibility and strength of muscles,so that it is more difficult to take pressure off the site of pain.Exercise is essential. It releases endorphins（内啡肤）,the body's " feel-good " chemicals , which are natural painkillers. In fact, these are so important that researchers are now looking for drugs that can maintain a comfortable level of en- dorphins in the body.Most people who go to a family doctor complaining of pain are prescribed pain-killing drugs rather than exercise.Since finding the cause of backache is not so easy,doctors frequently do not know the precise cause of the discomfort,and as the pain continues,sufferers end up taking stronger doses or a series of different drugs."It's crazy,"says Dr. Brasseur,a therapist at the International Association for the Study of Pain. "Some of them are taking different drugs prescribed by different doctors.I've just seen a patient who was tak- ing two drugs which turned out to be the same thing under different names."A generation of new pain clinics now operates on the basis that drugs are best avoided.Once patients have undergone the initial physical and psychological check up,their medication is cut down as much as pos- sible.Taking patients off drugs also prepares them for physical activity.In some pain-relief clinics,patients begin the day with muscle contraction and relaxation exercises,fol- lowed by an hour on exercise bikes. Later in the day , they practice tai chi（太极）,self-defense , and deep thought. This compares with an average of two-and-a-half hours' physiotherapy（理疗）a week in a traditional hospital program."The idea is to strengthen and to increase long-lasting energy,flexibility,and confidence," explains Bill Wiles,a consultant pain doctor in Liverpool."Patients undergoing this therapy get back to work and resume healthy active lifestyles much sooner than those subjected to more conservative treatment."To treat pain,patients should stop moving around.A:RightB:WrongC:Not mentioned
共用题干第一篇New Attempts to Eradicate AIDS VirusA high-profile attempt to eradicate the AIDS virus in a few patients continues to show promise.But researchers won't know for a year or more whether it will work,scientist David Ho told journalists here Wednesday for the Fourth Conference on Viruses and Infections."This is a study that's in progress,"says Ho,head of the Aaron Diamond AIDS Research Center, New York.The study involves 20 people who started combinations of anti-HIV drugs very early in the course of the disease,within 90 days of their infections.They'ye been treated for up to 18 months.Four others have dropped out because of side effects or problems complying with the exacting drug system.The drugs have knocked the AIDS virus down to undetectable levels in the blood of all remaining patients.And,in the latest development,scientists have now tested lymph nodes and semen from a few patients and found no virus reproducing there,Ho says."Bear in mind that undetectable does not equal absent,"Ho says.Ho has calculated that the drugs should be able to wipe out remaining viruses一at least from known reservoirs throughout the body—in two to three years.But the only way to prove eradication would be to stop the drugs and see if the virus comes back.On Wednesday,Ho said he wouldn't ask any patient to consider that step before 2(1/2)years of treatment.And he emphasized that he is not urging widespread adoption of such early,aggressive treatment outside of trials.No one knows the long-term risks.But other scientists are looking at similar experiments.A federally funded study will put 300 patients on triple-drug treatments and then see if some responding well after six months can continue to suppress the virus on just one or two drugs,says researcher Douglas Richman of the University of California,San Diego. Some patients in that study also may be offered the chance to stop therapy after 1 8 months or more,he says. We prove that the drugs have wiped out the remaining viruses by________.A:using up all the drugs at onceB:waiting for the virus to die slowlyC:asking the patients'feeling about the diseaseD:stopping the drugs to see if the virus comes back
共用题干Relieving the Pain"Exercise may be the best treatment of chronic pain,"say doctors at a new clinic for dealing with pain. "People with chronic pain need to stop lying around,go out more,and start exercising."The instinctive reaction to acute pain is to stop moving and to try to protect the source of pain. But it seems that this is often not productive,especially in the case of back pain. Back pain,after headaches and tiredness,has become the third most common reason for people to visit their doctors.Painful backs now account for millions of days off work.Lumbar（腰部的）pains are partly the price humans pay for taking their forelimbs off the ground, but they are made worse by a sedentary（久坐不动的）lifestyle. Lack of exercise slowly decreases the flexibility and strength of muscles,so that it is more difficult to take pressure off the site of pain.Exercise is essential. It releases endorphins（内啡肽）,the body's "feel-good" chemicals, which are natural painkillers. In fact, these are so important that researchers are now looking for drugs that can maintain a comfortable level of endorphins in the body.Most people who go to a family doctor complaining of pain are prescribed pain-killing drugs rather than exercise.Since finding the cause of backache is not so easy,doctors frequently do not know the precise cause of the discomfort,and as the pain continues,sufferers end up taking stronger doses or a series of different drugs."It's crazy,"says Dr. Brasseur,a therapist at the International Association for the Study of Pain. "Some of them are taking different drugs prescribed by different doctors.I've just seen a patient who was taking two drugs which turned out to be the same thing under different names."A generation of new pain clinics now operates on the basis that drugs are best avoided.Once patients have undergone the initial physical and psychological check up,their medication is cut down as much as possible.Taking patients off drugs also prepares them for physical activity.In some pain一 relief clinics,patients begin the day with muscle contraction and relaxation exercises, followed by an hour on exercise bikes. Later in the day,they practice tai chi（太极）,self-defense,and deepthought. This compares with an average of two-and-a-half hours' physiotherapy（理疗）a week in a traditional hospital program."The idea is to strengthen and to increase long一lasting energy,flexibility,and confidence," explains Bill Wiles,a consultant pain doctor in Liverpool."Patients undergoing this therapy get back to work and resume healthy active lifestyles much sooner than those subjected to more conservative treatment."Headaches are partly caused by lack of exercise.A:RightB:WrongC:Not mentioned
单选题The controversy mentioned in the passage focuses on _____.Awhether psychologists should use drugs to cure their patientsBhow psychologists should treat their patientsCthe fact that all of the drugs have harmful side effectsDthe extent to which drugs should be used to fight psychological illness
判断题A new idea is that researchers need to combine several drugs into a therapy so that several mutations can be treated simultaneously.A对B错
判断题Through reading the students not only learn new language, but also develop their reading skills.（）A对B错
单选题All of the following are non-medical purposes of the new generation of mind enhancing drugs EXCEPT _____.Aimproving your appetiteBeliminating bad memoriesCmaking better business decisionsDboosting exam performance
单选题It can be inferred from the passage that _____A“mental cosmetics” is already a reality.Ba new generation of mind-enhancing drugs may be a near future.CRitalin and Modafinil have no mind-enhancing properties.Dcognitive enhancers have been developed perfectly.