17．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 healthy，eating right food，getting enough sleep，and exercising regularly．
Proper nutrition（营养） is important for good health．Your body cannot work well unless it receives the proper kind"fuel"．Don't eat too much food with lots of sugar and fat．Eat plenty of foods high in protein（蛋白质），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（人的个性）．Be sure to allow yourself from seven to nine hours of sleep each day．If you do，your body will feel strong and refreshed，and your mind will be sharp．
Finally，get plenty of exercise．Exercise makes the body stronger，strengthens the muscles（肌肉），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 life-span（寿命）．Any kind of exercise is good．Most sports are good for keeping the body in good shape：basketball，swimming，bicycling，running and so on．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．
63．In order to keep good health，C．
A．we should eat much sugar and fat
B．we need a large amount of meat
C．we should take in proper nutrition
D．we must overeat vegetables and fruits
64．Eating more and sleeping lessD．
A．makes us healthier B．helps keep our personality
C．gets us more energy D．does harm to our health
65．In the 4th paragraph，the writer wants to tell usB．
A．how we can strengthen our muscles B．how important for us to take exercise
C．how we can increase your life-span D．how enjoyable and interesting sports are
66．The best title for the article should be"C"．
A．Eating and Exercising B．Exercising Regularly
C．Staying Healthy D．Sleeping Enough．
分析 本文是一篇科普类文章，介绍了如何保持健康，针对如何保持健康这一问题，给出了一些建议，一定要讲究营养搭配，吃合适的食物；保持充足的睡眠时间；经常锻炼身体．相信做到这三点，我们将会更健康，更长寿，更智慧．
解答 63．答案：C．细节理解题．根据文章第二段"Proper nutrition（营养） is important for good health．"可知，我们一定要吃合适的食物，要按照营养学的规律，要把肉类的蔬菜水果搭配在一起．故选C．
64．答案：D．细节理解题．根据第二段最后一句"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．"可知，不要吃太多，也不要睡觉不够，都对身体不好．故选D．
65．答案：B．主旨大意题．根据文章第四段内容可知，这一自然段主要讲了锻炼身体的重要性．故选B．
66．答案：C．主旨大意题．根据文章第一段最后一句"There are three things that a person can do to help stay in good shape：eat right food，get enough sleep，and exercise regularly．"可知，本文是关于保持健康的话题．故选C．
点评 本文是一篇科普类文章，题目涉及多道细节理解题，主旨大意题，做题时应结合文章上下文内容，仔细阅读原文，并根据所给选项的含义进行分析，从而得出正确答案．切记胡乱猜测，一定要做到有理有据．
