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4.Working out helps you deal with stress in your job,relationships or any area of life.It is possibly(51)becauseexercise is a form of stress itself and helps your body deal with it in a better way.Australian researchers found that those(52)whodid 30 minutes of aerobic (有氧的) exercise three times a week responded better to stress and had (53)lower(low) blood pressure.
Even(54)alittle exercise,from an easy 10-minute walk to an intense aerobics,seems to decrease your feeling(55)ofanxiety.Working out regularly may make you smarter now and lessen the(56)possibility(possible) that you'll lose brain function at your age.According to a recent animal study,exercise can(57)actually(actual) help the brain develop new cells.In the last few years,it(58)has been shown(show) in several studies that regular aerobic exercise can improve the quality of sleep.Naturally,this can make you less tired and be able t o function better during the day.
Finally,there's one more reason to keep(59)exercising(exercise).When you work out regularly,your body simply functions better and you are healthier and less likely(60)to suffer(suffer) painful physical condition.

分析 本文主要论述了锻炼身体的好处:第一,锻炼可以帮助你处理工作、人际关系或生活中的压力;第二,经常锻炼可能会让你变得更聪明并且会减少你在你这个年龄丧失大脑功能的可能性;第三,定期的有氧运动可以提高睡眠质量;最后,经常锻炼会使你会更健康,从而避免遭受病痛的折磨.

解答 答案:
51.because     考查句意理解以及从属连词    根据前一句"锻炼可以帮助你处理工作、人际关系或生活中的压力",可推测出本句解释的应是前一句的内容,即:这可能是因为运动本身就是一种压力形式,它会帮你的身体更好的处理它;此处用来引导原因状语从句,意为:因为;故用because.
52.who   考查关系代词    本句为定语从句;由于先行词 those(指那些人)在该从句中作主语,故用关系代词who.     
53.lower   考查形容词的比较级    此处指的是两者之间的比较,即将一周做三次30分钟有氧运动的人与不做运动的人相比,他们面对压力的反应会更好,血压会更低;故用lower.         
54.a       考查固定搭配    a little 意为:一点儿,少量;本句的意思是:即使是少量的运动,从一个简单的10分钟步行到剧烈的有氧健身操,似乎都会减少你的焦虑感;此处指的是:少量的运动;故用a.
55.of     考查介词      此处表达的是所有关系,用以构成名词的所有格,意为:焦虑的感受;故用of.
56.possibility    考查名词    此处用在定冠词the之后,作动词lessen的宾语,意为:减少你在你这个年龄丧失大脑功能的可能性;故用名词possibility.
57.actually       考查副词   此处用来修饰动词help,故用副词actually.
58.has been shown      考查时态及语态    根据时间状语"In the last few years"可知,此处应使用现在完成时,由于主语it与动词show构成被动关系(意为:它已被证明),所以应使用现在完成时态的被动语态;故用has been show.
59.exercising   考查固定搭配    keep doing sth.意为:继续做某事,不断地做某事;此处指的是:不断地锻炼;故用exercising.
60.to suffer    考查固定搭配    be less likely to do sth.意为:更不可能 …;此处指的是:当你经常锻炼时,你的身体功能只能会更好,你会更健康,就更不可能遭受身体上的痛苦了;故用to suffer.

点评 本题主要考查了各种语法在短文中的具体运用.做本题时,需要在正确理解短文的前提下,逐句分析句意以及所考查到的语法现象;因此在平时的学习中,应熟练掌握各种语法知识,其中包括词法,句法,各种时态语态以及虚拟语气等.

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