共用题干ExerciseWhether or not exercise adds___1___the length of life,it is common experience that a certain___2___of regular exercise improves the health and contributes a feeling of wellbeing.Furthermore,exercise___3___involves play and recreation,and relieves nervous tension and mental fatigue in so doing,is not only pleasant but beneficial. How much and what kind of exercise one should___4___merits careful consideration. The growing child and the normal young man and young woman thrill with the exhilaration of strenuous sports.They fatigue to the___5___of exhaustion but recover promptly with a period of rest. But not so with___6___of middle age and beyond. For them moderation is___7___vital importance. Just how much exercise a person of a given age can safely take is a question___8___to answer. Individual variability is___9___ great to permit of generalization. A game of tennis may be perfectly safe for one person of forty but folly for another. The safe limit for exercise___10___ on the condition of the heart,the condition of the muscles,the type of exercise,and the regularity with which it is taken.Two general suggestions,however,will___11___ as sound advice for anyone.The first is that the condition of the heart and general health should be___12___ periodically by careful, thorough physical examinations. The___13___is that exercise should be kept below the point of physical exhaustion.What type of exercise one should___14___depends upon one's physical condition. Young people can safely enjoy vigorous competitive sports,but most older persons do better to limit themselves to less strenuous activities. Walking,swimming,skating are among the sports that one can enjoy and safely participate___15___throughout life. Regularity is important if one is to get the most enjoyment and benefit out of exercise.7._________A: againstB: belowC: onD: of
共用题干
Exercise
Whether or not exercise adds___1___the length of life,it is common experience that a certain___2___of regular exercise improves the health and contributes a feeling of wellbeing.
Furthermore,exercise___3___involves play and recreation,and relieves nervous tension and mental fatigue in so doing,is not only pleasant but beneficial. How much and what kind of exercise one should___4___merits careful consideration. The growing child and the normal young man and young woman thrill with the exhilaration of strenuous sports.They fatigue to the___5___of exhaustion but recover promptly with a period of rest. But not so with___6___of middle age and beyond. For them moderation is___7___vital importance. Just how much exercise a person of a given age can safely take is a question___8___to answer. Individual variability is___9___ great to permit of generalization.
A game of tennis may be perfectly safe for one person of forty but folly for another. The safe limit for exercise___10___ on the condition of the heart,the condition of the muscles,the type of exercise,and the regularity with which it is taken.Two general suggestions,however,will___11___ as sound advice for anyone.The first is that the condition of the heart and general health should be___12___ periodically by careful, thorough physical examinations. The___13___is that exercise should be kept below the point of physical exhaustion.
What type of exercise one should___14___depends upon one's physical condition. Young people can safely enjoy vigorous competitive sports,but most older persons do better to limit themselves to less strenuous activities. Walking,swimming,skating are among the sports that one can enjoy and safely participate___15___throughout life. Regularity is important if one is to get the most enjoyment and benefit out of exercise.
Exercise
Whether or not exercise adds___1___the length of life,it is common experience that a certain___2___of regular exercise improves the health and contributes a feeling of wellbeing.
Furthermore,exercise___3___involves play and recreation,and relieves nervous tension and mental fatigue in so doing,is not only pleasant but beneficial. How much and what kind of exercise one should___4___merits careful consideration. The growing child and the normal young man and young woman thrill with the exhilaration of strenuous sports.They fatigue to the___5___of exhaustion but recover promptly with a period of rest. But not so with___6___of middle age and beyond. For them moderation is___7___vital importance. Just how much exercise a person of a given age can safely take is a question___8___to answer. Individual variability is___9___ great to permit of generalization.
A game of tennis may be perfectly safe for one person of forty but folly for another. The safe limit for exercise___10___ on the condition of the heart,the condition of the muscles,the type of exercise,and the regularity with which it is taken.Two general suggestions,however,will___11___ as sound advice for anyone.The first is that the condition of the heart and general health should be___12___ periodically by careful, thorough physical examinations. The___13___is that exercise should be kept below the point of physical exhaustion.
What type of exercise one should___14___depends upon one's physical condition. Young people can safely enjoy vigorous competitive sports,but most older persons do better to limit themselves to less strenuous activities. Walking,swimming,skating are among the sports that one can enjoy and safely participate___15___throughout life. Regularity is important if one is to get the most enjoyment and benefit out of exercise.
7._________
A: against
B: below
C: on
D: of
A: against
B: below
C: on
D: of
参考解析
解析：在四个选项中，add只可以与to搭配，意为“增加”，正符合上下文的意思。
在四个选项中，A和B显然不符合逻辑，可供考虑的只有C和D。需要考虑的是，exercise这个词，如果作为“体育锻炼”讲是不可数名词，只有作为“一项运动”讲时才是可数名词，根据上下文意思，exercise也不是用来强调体育项目的（没有用复数），而amount与不可数名词连用，number则须与可数名词连用，故应选C。
从语法上分析，主句主语exercise的谓语应该是is not only pleasant but beneficial，中间显然应该是一个定语从句，定语从句所缺少的是主语，故应选A,
从语法上分析，one should+动词应该是前面那个主语的定语从句，只是定语从句的宾语which/that被省略了，而四个选项中只有take可与exercise搭配，故应选D。
point，既可表达时间（“时刻”）或空间（“地点”）也可表达“程度”的意思，to the point of“达到……的地步/程度”，符合上下文要求。所以答案为A。
本空格后面的of middle age and beyond提示了本空格要填的词应该是指 “人”的词，而且不止一个人，从上下文看，these显然不合适，因为上文并没有特指哪些人，故只 有C合适。
本句中is后面应该是表语部分，四个选项中只有D项of合适，of impor- tance=important,of vital importance=very,very important。
从语法上分析，这个空必须填上一个形容词作question的定语，从上下文分析，只有B项hard合适，这里的hard =difficult。
前句已经说到，“不同年龄的人做多少运动是一个难以回答的问题”，显然本句的意思是“个人的差异太大，无法一概而论”，因此选择B项too是最恰当的。too... to...的结构具有否定的意义。
虽然四个选项都可以与on搭配，但act on意为“按照……行动”, carry on 意为“进行”，不符合文意，只有depend on“取决于……”和base on“根据……”语境可以考虑，但base是及物动词，应该为base sth. on...，故只能选择A。
虽然四个选项都可以与as连用，但用法和意义各有不同，refer to sb. /sth. as“把……说成……”； regard sb./sth. as“把……当成…… ” ； treat sb. /sth. as“把……当成……”；均不符合语境，只有serve as“充当……，作为……”在语法上和意义上恰当。所以答案为C。
前面A、B、C三个选项的词义分别为“推迟”、“保护”、“设计”，与上下文意义不相符，只有D项“测定、确定”符合文意。
前面说到有两个一般性的建议，并且已提到“第一个”，那么“另一个”只能考虑A、B两个选项了。二者都有“另一个”的意思，只是用法不同，another不用冠词，而the other则需要定冠词the，故选A。
四个选项中A、C、D三个选项的意思与上下文相去甚远，只有B项合适。 one should choose用来做前面主语的定语从句，在定语从句中省略了宾语that/which。
四个选项中只有C项in可与participate连用，意为“参加”，in的宾语是引导定语从句的关系代词that。
在四个选项中，A和B显然不符合逻辑，可供考虑的只有C和D。需要考虑的是，exercise这个词，如果作为“体育锻炼”讲是不可数名词，只有作为“一项运动”讲时才是可数名词，根据上下文意思，exercise也不是用来强调体育项目的（没有用复数），而amount与不可数名词连用，number则须与可数名词连用，故应选C。
从语法上分析，主句主语exercise的谓语应该是is not only pleasant but beneficial，中间显然应该是一个定语从句，定语从句所缺少的是主语，故应选A,
从语法上分析，one should+动词应该是前面那个主语的定语从句，只是定语从句的宾语which/that被省略了，而四个选项中只有take可与exercise搭配，故应选D。
point，既可表达时间（“时刻”）或空间（“地点”）也可表达“程度”的意思，to the point of“达到……的地步/程度”，符合上下文要求。所以答案为A。
本空格后面的of middle age and beyond提示了本空格要填的词应该是指 “人”的词，而且不止一个人，从上下文看，these显然不合适，因为上文并没有特指哪些人，故只 有C合适。
本句中is后面应该是表语部分，四个选项中只有D项of合适，of impor- tance=important,of vital importance=very,very important。
从语法上分析，这个空必须填上一个形容词作question的定语，从上下文分析，只有B项hard合适，这里的hard =difficult。
前句已经说到，“不同年龄的人做多少运动是一个难以回答的问题”，显然本句的意思是“个人的差异太大，无法一概而论”，因此选择B项too是最恰当的。too... to...的结构具有否定的意义。
虽然四个选项都可以与on搭配，但act on意为“按照……行动”, carry on 意为“进行”，不符合文意，只有depend on“取决于……”和base on“根据……”语境可以考虑，但base是及物动词，应该为base sth. on...，故只能选择A。
虽然四个选项都可以与as连用，但用法和意义各有不同，refer to sb. /sth. as“把……说成……”； regard sb./sth. as“把……当成…… ” ； treat sb. /sth. as“把……当成……”；均不符合语境，只有serve as“充当……，作为……”在语法上和意义上恰当。所以答案为C。
前面A、B、C三个选项的词义分别为“推迟”、“保护”、“设计”，与上下文意义不相符，只有D项“测定、确定”符合文意。
前面说到有两个一般性的建议，并且已提到“第一个”，那么“另一个”只能考虑A、B两个选项了。二者都有“另一个”的意思，只是用法不同，another不用冠词，而the other则需要定冠词the，故选A。
四个选项中A、C、D三个选项的意思与上下文相去甚远，只有B项合适。 one should choose用来做前面主语的定语从句，在定语从句中省略了宾语that/which。
四个选项中只有C项in可与participate连用，意为“参加”，in的宾语是引导定语从句的关系代词that。
相关考题：
If you()in taking exercise, you're more likely to have a long and energetic life. A、insistB、persist
After a long period of regular exercise, I now _____ much less than I used to. A、weighB、likeC、growD、increase
Exercise is most important to health, the report says; though it doesn''t ___________ body weight(体重) for sure. A、ignoreB、restrictionC、reduceD、area
We all need (11) ．Doctors say it is good (12) 0ur (13) ．It makes your heart and body strong． And you'll (14) better about yourself． It's best to exercise(15) a week．Twenty minutes each time is enough．There are (16 ways to exercise． You can walk， (17) ，play football or swim Many people go to special places to exercise． They are called "fitness centers ． These places have (18) equipment． Some people buy equipment(器械) for their families， But it is very expensive．Exercising can be fun． Friends can exercise together (19) a fitness center． How do you exercise? How (20) do you exercise?( )11．A． exercisingB． exercisesC． to exerciseD． exercised
Doctors say that exercise is important for health, but it be regular exercise .A. can B. will C. must D. may
Doctors say that exercise is important for health, but it _______ be regular exercise.A．canB．willC．mustD．may
共用题干第三篇Exercise Lowers Employers' Health CostsCompanies can save millions in health-care costs simply by encouraging their employees to exercise a little bit,researchers reported on Friday.They said obese（肥胖的）employees had higher health-care costs , but lowered those expenses by exercising just a couple of times a week-without even losing any weight.Feifei Wang and colleagues at the University of Michigan studied 23,500 workers at General Motors.They estimated that getting the most sedentary（惯于久坐的）obese workers to exercise would have saved about$790,000 a year,or about 1.5 percent of health-care costs for the whole group.Company-wide,the potential savings could reach$7.l million per year,they reported in the Journal of Occupational and Environmental Medicine.Of the whole group of workers,about 30 percent were of normal weight,45 percent were overweight（超重的）,and 25 percent were obese. Annual health-care costs averaged $2, 200 for normal weight,$2, 400 for the overweight,and$2, 700 for obese employees.But among workers who did no exercise,health-care costs went up by at least$100 a year,and were$3,000 a year for obese employees who were sedentary.But adding two or more days of light exercise一at least 20 minutes of exercise or work hard enough to increase heart rate and breathing一lowered costs by on average$500 per employee a year,the researchers found."This indicates that physical activity behavior could reduce at least some of the harmful effects of excess body fat,and in consequence,help lower the health-care costs,"Wang and colleagues wrote. How often should the employees exercise to help lower the health-care costs?A:At least seven days a week. B:At least twenty minutes a week.C:At least twice a week. D:At least once a week.
共用题干Many Women Who Beat Cancer Don't Change HabitsMany women who battle breast cancer will tell you it's a life-changing experience. However,a new study shows that for many___1___ ,the changes aren't always positive or permanent.Beth Snoke has watched her mother and both grandmothers battle and survive breast ___2___.So when she was diagnosed,there was no doubt in her mind ___3___ she had to do.“I do exactly what the doctors say as far as the medicine that I'm on,as ___4___ as the vitamins,the diet,and the fitness. And I can't stress enough___5___ important that is,”saysBeth Snoke. But a surprising new study shows that___ 6___ every woman who beats breast cancer is getting that message. In fact,nearly 40% of them say even___7___ surviving breast cancer,they haven't made significant changes in the 8 they eat or how much they exer- cise.“Not all survivors are taking advantage of this teachable moment and making positive health changes in___9___life,”says Electra Paskett,PhD,at Ohio State University's Cornprehensive Cancer Center. Paskett says diet and exercise have been proven to not only help women feel better during and after treatment,they may___10___play a role in preventing some cancers from coming back.___ 11___ growing evidence,some women just aren't listening.“Colon cancer survivors ___12___ exercise have actually been shown to have improved survival rates.So,yes,it is true that perhaps by making some of these healthy choices we can actually increase their health,”says Paskett.As a breast cancer survivor ___13___ ,Paskett knows first hand how much difference diet and exercise can___14___.The challenge,she says,is to get more survivors to be more like Beth,during and after treatment.Experts-say exercising more and eating a healthier diet can also cut___15___on stress and help women overcome depression. There are more than 2 million breast cancer survivors liv-ing in the U. S. of those,nearly a million have yet to change their diet or exercise routines.9._________A: theirB: hisC: her D: our
共用题干ExerciseWhether or not exercise adds___1___the length of life,it is common experience that a certain___2___of regular exercise improves the health and contributes a feeling of wellbeing.Furthermore,exercise___3___involves play and recreation,and relieves nervous tension and mental fatigue in so doing,is not only pleasant but beneficial. How much and what kind of exercise one should___4___merits careful consideration. The growing child and the normal young man and young woman thrill with the exhilaration of strenuous sports.They fatigue to the___5___of exhaustion but recover promptly with a period of rest. But not so with___6___of middle age and beyond. For them moderation is___7___vital importance. Just how much exercise a person of a given age can safely take is a question___8___to answer. Individual variability is___9___ great to permit of generalization. A game of tennis may be perfectly safe for one person of forty but folly for another. The safe limit for exercise___10___ on the condition of the heart,the condition of the muscles,the type of exercise,and the regularity with which it is taken.Two general suggestions,however,will___11___ as sound advice for anyone.The first is that the condition of the heart and general health should be___12___ periodically by careful, thorough physical examinations. The___13___is that exercise should be kept below the point of physical exhaustion.What type of exercise one should___14___depends upon one's physical condition. Young people can safely enjoy vigorous competitive sports,but most older persons do better to limit themselves to less strenuous activities. Walking,swimming,skating are among the sports that one can enjoy and safely participate___15___throughout life. Regularity is important if one is to get the most enjoyment and benefit out of exercise.12._________A: delayedB: defendedC: designedD: determined
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.
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.
Your dog needs at least 20 minutes of vigorous exercise every day.A:energeticB:freeC:physicalD:regular
共用题干第一篇Exercise Lowers Employers' Health CostsCompanies can save millions in health-care costs simply by encouraging their employees to exercise a little bit,researchers reported on Friday.They said obese（肥胖的）employees had higher health-care costs , but lowered those expenses by exercising just a couple of times a week一without even losing any weight.Feifei Wang and colleagues at the University of Michigan studied 23,500 workers at General Motors.They estimated that getting the most sedentary (惯于久坐的）obese workers to exercise would have saved about$790,000 a year,or about 1.5 percent of health-care costs for the whole group.Company-wide,the potential savings could reach$7.1million per year,they reported in the Journal of Occupational and Environmental Medicine.Of the whole group of workers,about 30 percent were of normal weight,45 percent were overweight（超重的）,and 25 percent were obese. Annual health-care costs averaged$2,200 for normal weight,$2,400 for the overweight,and$2,700 for obese employees.But among workers who did no exercise,health-care costs went up by at least $100 a year,and were $3,000 a year for obese employees who were sedentary.But adding two or more days of light exercise一at least 20 minutes of exercise or work hard enough to increase heart rate and breathing一lowered costs by on average$500 per employee a year,the researchers found."This indicates that physical activity behavior could reduce at least some of the harmful effects of excess body fat,and in consequence,help lower the health-care costs,"Wang and colleagues wrote. By encouraging its employees to exercise General Motors could saveA:$790,000 per year. B:$7.1 million per year:C:$3,000 per year. D:$7,300 per year.
共用题干第一篇Exercise Lowers Employers' Health CostsCompanies can save millions in health-care costs simply by encouraging their employees to exercise a little bit,researchers reported on Friday.They said obese（肥胖的）employees had higher health-care costs , but lowered those expenses by exercising just a couple of times a week一without even losing any weight.Feifei Wang and colleagues at the University of Michigan studied 23,500 workers at General Motors.They estimated that getting the most sedentary (惯于久坐的）obese workers to exercise would have saved about$790,000 a year,or about 1.5 percent of health-care costs for the whole group.Company-wide,the potential savings could reach$7.1million per year,they reported in the Journal of Occupational and Environmental Medicine.Of the whole group of workers,about 30 percent were of normal weight,45 percent were overweight（超重的）,and 25 percent were obese. Annual health-care costs averaged$2,200 for normal weight,$2,400 for the overweight,and$2,700 for obese employees.But among workers who did no exercise,health-care costs went up by at least $100 a year,and were $3,000 a year for obese employees who were sedentary.But adding two or more days of light exercise一at least 20 minutes of exercise or work hard enough to increase heart rate and breathing一lowered costs by on average$500 per employee a year,the researchers found."This indicates that physical activity behavior could reduce at least some of the harmful effects of excess body fat,and in consequence,help lower the health-care costs,"Wang and colleagues wrote. For which group of the workers were the health-care costs the highest?A:The employees of normal weight.B:The overweight employees.C:The obese employees.D:The sedentary obese employees.
共用题干ExerciseWhether or not exercise adds to the length of life,it is common experience that a certain amount of regular exercise_______(51)health and contributes a feeling of well-being. Furthermore,exercise________(52)involves play and recreation（娱乐）,and relieves nervous tension and mental fatigue in so__________(53),is not only pleasant but beneficial.How much and what kind of exercise one should_________(54)merits careful consideration.The grow- ing child and the normal young man and young woman thrill（兴奋） with strenuous（剧烈的）sports. Theyfatigue to the__________(55)of exhaustion but recover promptly with a period of rest.But not so with thoseof middle age and beyond. For them moderation is_________(56)vital importance.Just how much exercise a person of a given age can safely take is a question hard to__________(57).In- dividual variability is too great to permit generalization.A game of tennis may be perfectly safe for one per- son of forty but folly（愚蠢）for another. The safe_________(58)for exercise depends on the condition of the heart,the condition of the muscles,the_________(59)of exercise,and the regularity with which it is taken. Two general suggestions,however,will__________(60)as sound advice for anyone.The first is thatthe___________(61)of the heart and general health should be determined periodically by careful,thorough physical examinations. The other is that exercise should be kept__________(62)the point of physical exhaustion.What type of exercise one should___________( 63)depends upon one's physical condition.Young people can safely enjoy competitive sports,but most older persons do better to limit themselves to less strenuous ___________(64).Walking,swimming and skating are among the sports that one can enjoy and safely ___________(65)in throughout life.Regularity is important if one is to get the most enjoyment and benefit out of exercise._________(58)A:approachB:distanceC:periodD:limit
共用题干第一篇Exercise Lowers Employers' Health CostsCompanies can save millions in health-care costs simply by encouraging their employees to exercise a little bit,researchers reported on Friday.They said obese（肥胖的）employees had higher health-care costs , but lowered those expenses by exercising just a couple of times a week一without even losing any weight.Feifei Wang and colleagues at the University of Michigan studied 23,500 workers at General Motors.They estimated that getting the most sedentary (惯于久坐的）obese workers to exercise would have saved about$790,000 a year,or about 1.5 percent of health-care costs for the whole group.Company-wide,the potential savings could reach$7.1million per year,they reported in the Journal of Occupational and Environmental Medicine.Of the whole group of workers,about 30 percent were of normal weight,45 percent were overweight（超重的）,and 25 percent were obese. Annual health-care costs averaged$2,200 for normal weight,$2,400 for the overweight,and$2,700 for obese employees.But among workers who did no exercise,health-care costs went up by at least $100 a year,and were $3,000 a year for obese employees who were sedentary.But adding two or more days of light exercise一at least 20 minutes of exercise or work hard enough to increase heart rate and breathing一lowered costs by on average$500 per employee a year,the researchers found."This indicates that physical activity behavior could reduce at least some of the harmful effects of excess body fat,and in consequence,help lower the health-care costs,"Wang and colleagues wrote. How many workers in General Motors were NOT of normal weight?A:Seventy percent' B:Thirty percent.C:Forty-five percent. D:Twenty-five percent.
共用题干第一篇Exercise Lowers Employers' Health CostsCompanies can save millions in health-care costs simply by encouraging their employees to exercise a little bit,researchers reported on Friday.They said obese（肥胖的）employees had higher health-care costs , but lowered those expenses by exercising just a couple of times a week一without even losing any weight.Feifei Wang and colleagues at the University of Michigan studied 23,500 workers at General Motors.They estimated that getting the most sedentary (惯于久坐的）obese workers to exercise would have saved about$790,000 a year,or about 1.5 percent of health-care costs for the whole group.Company-wide,the potential savings could reach$7.1million per year,they reported in the Journal of Occupational and Environmental Medicine.Of the whole group of workers,about 30 percent were of normal weight,45 percent were overweight（超重的）,and 25 percent were obese. Annual health-care costs averaged$2,200 for normal weight,$2,400 for the overweight,and$2,700 for obese employees.But among workers who did no exercise,health-care costs went up by at least $100 a year,and were $3,000 a year for obese employees who were sedentary.But adding two or more days of light exercise一at least 20 minutes of exercise or work hard enough to increase heart rate and breathing一lowered costs by on average$500 per employee a year,the researchers found."This indicates that physical activity behavior could reduce at least some of the harmful effects of excess body fat,and in consequence,help lower the health-care costs,"Wang and colleagues wrote. How often should the employees exercise to help lower the health-care costs?A:At least seven days a week. B:At least twenty minutes a week.C:At least twice a week. D:At least once a week.
共用题干ExerciseWhether or not exercise adds to the length of life,it is common experience that a certain amount of regular exercise_______(51)health and contributes a feeling of well-being. Furthermore,exercise________(52)involves play and recreation（娱乐）,and relieves nervous tension and mental fatigue in so__________(53),is not only pleasant but beneficial.How much and what kind of exercise one should_________(54)merits careful consideration.The grow- ing child and the normal young man and young woman thrill（兴奋） with strenuous（剧烈的）sports. Theyfatigue to the__________(55)of exhaustion but recover promptly with a period of rest.But not so with thoseof middle age and beyond. For them moderation is_________(56)vital importance.Just how much exercise a person of a given age can safely take is a question hard to__________(57).In- dividual variability is too great to permit generalization.A game of tennis may be perfectly safe for one per- son of forty but folly（愚蠢）for another. The safe_________(58)for exercise depends on the condition of the heart,the condition of the muscles,the_________(59)of exercise,and the regularity with which it is taken. Two general suggestions,however,will__________(60)as sound advice for anyone.The first is thatthe___________(61)of the heart and general health should be determined periodically by careful,thorough physical examinations. The other is that exercise should be kept__________(62)the point of physical exhaustion.What type of exercise one should___________( 63)depends upon one's physical condition.Young people can safely enjoy competitive sports,but most older persons do better to limit themselves to less strenuous ___________(64).Walking,swimming and skating are among the sports that one can enjoy and safely ___________(65)in throughout life.Regularity is important if one is to get the most enjoyment and benefit out of exercise._________(51)A:damagesB:enjoysC:providesD:improves