题目内容
Lengthy hike once a day will do you far more good than going to the shops every couple of hours—even if the short walks add up to the same amount of time, say exercise researchers in Britain. But walks of any length beat sitting at home with your feet up and watching television, they stress(强调).
Steve Bird at Canterbury Christ Church University reached these conclusions after putting 56 couch potatoes through an 18-week course of daily walks.
They found that longer walks produce the most beneficial changes to the composition(成分)of blood fats, but walks of any length improve the fitness of the heart. “It’s the sort of thing that can make the heart 10 years younger. ”says Bird.
To find out, Bird divided his normally inactive subjects(受实验者) into three roughly(大致) equal groups. The “long walkers”took a hike of between 20 and 40 minutes every day. “Intermediate walkers”had two hikes of 10 to 15 minutes, and “short walkers”did three hikes of 5 to 10 minutes. The controls sat at home, as usual.
At the start and end of the 18 weeks, Bird measured the health and fitness of each group. He found that the long walkers were healthiest.
1. Speaking of health, reading a book will be no better than______.
A. sitting at home
B. going shopping
C. a short walk
D. climbing a hill
2. “Couch potatoes”probably means______.
A. people who often take exercises
B. people who often watch TV
C. people who often go shopping
D. people who enjoy walking
3. What is a good way to keep your heart young according to the passage?
A. Only a long walk.
B. Only a short walk.
C. Walks of any length.
D. No walk.
4. Which is not true according to the passage?
A. The long walk is the best way to keep your health.
B. The short walkers took three 5-or-10-minute walks every day.
C. The subjects stayed at home as before during the experiment.
D. Walking can make you 10 years younger.
5. Which do you think can prove the conclusion is well worth believing?
A. Bird gave his subjects two physical examinations.
B. There were three roughly equal groups and 56 people in all.
C. The subjects had nearly the same amount of walking every day.
D. Bird spent 18 weeks carrying out this experiment.
提示:
1题从文章第一段可以看出,1题选择A项,即对于健康来说,读书和坐在家里一样不好。2题联系第二段上下文,可知2题答案为B项,即看电视的人。 3题从最后两段可以看出,任意长度的步行都对心脏有好处,故3题选C项。 5题属于分析推断题,要求寻找论据,本题选C项。
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