Question

12．Good health is the most valuable thing a person can have，but one cannot take good health for granted．It is important to remember that the body needs proper care in order to be healthy．There are three things that a person can do to help stay in good shape：eat right food，get enough sleep，and exercise regularly．
Proper nutrition（營養(yǎng)）is important for good health．Your body cannot work well unless it receives the proper kind of"fuel（燃料）"．Don't eat too much food with lots of sugar and fat．Eat plenty of foods high in protein，like meat，fish，eggs and nuts．Vegetables and fruits are very important because they provide necessary vitamins and minerals．However，don't overeat．It is not helpful to be overweight．
Getting the proper amount of sleep is also important．If you don't get enough sleep，you feel tired and easily get angry．You have no energy．Over a long period of time a little amount of sleep may even result in a change of personality （人的個性）．Be sure to allow yourself from seven to nine hours of sleep each night．If you do，your body will feel strong and refreshed，and your mind will be sharp．
Finally，get plenty of exercise．Exercise firms the body，strengthens the muscles，and prevents you from gaining weight．It also improves your heart and lungs．If you follow a regular exercise program，you will probably increase your lifespan（壽命）．Any kind of exercise is good．Most sports are excellent for keeping the body in good shape：basketball，swimming，bicycling，running and so on are good examples．Sports are not only good for your body，but they are enjoyable and interesting，too．
If everybody were to eat the right foods，get plenty of sleep and exercise regularly，the world would be a happier and healthier place．We would all live to be much older and wiser．
21．According to the passage，A．
A．we should always keep fit
B．if we were healthy，we could spend our days in doing things with less sleep
C．one can eat a lot to stay in good shape
D．one needn't take any exercise if he is healthy
22．In order to keep good health，C．
A．we should eat a lot of sweets
B．one needs a large amount of fat
C．people should eat according to the food's nutrition
D．we must try to sleep now and then
23．Eating more and sleeping lessB．
A．can make you keep healthy
B．is no good for you
C．gets you more energy
D．will keep your personality
24．According to the passage，the benefits of proper exercise are as follows EXCEPT thatC．
A．exercise can help build up the body
B．exercise may make you live longer
C．exercise may help cure heart diseases
D．exercise can bring happiness to people．

Answer 1

分析 本文介紹了如何保持健康，針對如何保持健康這一問題，給出了一些建議．

解答 21．A，推理判斷題，根據(jù)句子Good health is the most valuable thing a person can have可知，我們要一直保持健康，故答案為A．
22．C，推理判斷題．根據(jù)文章第二段內(nèi)容可知我們一定要吃合適的食物，要按照營養(yǎng)學(xué)的規(guī)律，要把肉類的蔬菜水果搭配在一起．故選C．
23．B，細(xì)節(jié)理解題．根據(jù)第二段最后一句However，don"t overeat．It is not helpful to be overweight．和第三段第二句If you don"t get enough sleep，you feel tired and easily get angry．說明不要吃太多，也不要睡覺不夠，都對身體不好，故選B．
24．C，細(xì)節(jié)理解題，根據(jù)句子If you follow a regular exercise program，you will probably increase your lifespan（壽命）．Any kind of exercise is good．Most sports are excellent for keeping the body in good shape：basketball，swimming，bicycling，running and so on are good examples．Sports are not only good for your body，but they are enjoyable and interesting，too．可知，運動能增強體質(zhì)，延長壽命，還能給人帶來快樂，故答案為C．

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