2. 外语
  3. Exercise Whether or not exercise adds to the length of life, it is common experience that a certain amount of regular exerci

Exercise Whether or not exercise adds to the length of life, it is common experience that a certain amount of regular exerci

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问题                             Exercise
    Whether or not exercise adds to the length of life, it is common experience that a certain amount of regular exercise【C1】______health and contributes a feeling of well-being. Furthermore, exercise 【C2】______involves play and recreation(娱乐), and relieves nervous tension and mental fatigue in so【C3】______is not only pleasant but beneficial.
    How much and what kind of exercise one should【C4】______merits careful consideration. The growing child and the normal young man and young woman thrill(兴奋)with the strenuous(剧烈的) sports. They fatigue to the【C5】______of exhaustion but recover promptly with a period of rest. But not so with those of middle age and beyond. For them moderation is【C6】______vital importance.
    Just how much exercise a person of a given age can safely take is a question hard to【C7】______. Individual variability is too great to permit of generalization. A game of tennis may be perfectly safe for one person of forty but folly(愚蠢)for another. The sage【C8】______for exercise depends on the condition of the heart, the condition of the muscles, the【C9】______of exercise, and the regularity with which it is taken. Two general suggestions, however, will【C10】______as sound advice for anyone. The first is that the【C11】______of the heart and general health should be determined periodically by careful, thorough physical examinations. The other is that exercise should be【C12】______below the point of physical exhaustion.
    What type of exercise one should【C13】______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【C14】______. Walking, swimming, skating are among the sports that one can enjoy and safely【C15】______in throughout life. Regularity is important if one is to get the most enjoyment and benefit out of exercise.
【C3】
选项 A、playing
B、doing
C、making
D、treating
答案B
解析 根据上下文，“此外，锻炼包含玩耍与娱乐，并且能在玩耍和娱乐的同时缓解神经紧张和精神疲劳的锻炼方式不仅令人愉快而且十分有益”，英语中常常用代词或者概括性的词指代前面出现过的表达，选项中只有doing可以概括play和recreation，故选B。
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