2. 外语
  3. Walking, if you do it vigorously enough, is the overall best exercise for regular physical activity. It requires no equipment, e

Walking, if you do it vigorously enough, is the overall best exercise for regular physical activity. It requires no equipment, e

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问题     Walking, if you do it vigorously enough, is the overall best exercise for regular physical activity. It requires no equipment, everyone knows how to do it and it carries the【C1】______risk of injury. The human body is designed to walk. You can walk in parks or along a river or in your neighborhood. To get【C2】______benefit from walking, aim for 45 minutes a day, an average of five days a week.
    Strength training is another important【C3】______of physical activity. Its purpose is to build and【C4】______bone and muscle mass, both of which shrink with age. In general, you will want to do strength training two or three days a week,【C5】______recovery days between sessions.
    Finally, flexibility and balance training are【C6】______important as the body ages. Aches and pains are high on the list of complaints in old age. The result of constant muscle tension and stiffness of joints, many of them are【C7】______, and simple flexibility training can【C8】______these by making muscles stronger and keeping joints lubricated(润滑). Some of this you do whenever you stretch. If you watch dogs and cats, you’ll get an idea of how natural it is. The general【C9】______is simple: whenever the body has been in one position for a while, it is good to【C10】______stretch it in an opposite position.
A)allowing F)helping K)prevent
B)avoidable G)increasingly L)principle
C)briefly H)lowest M)provoke
D)component I)maintain N)seriously
E)determined J)maximum O)topic
【C4】
选项
答案A
解析 空格处所在句子已经有谓语结构will want to do，空格后为名词短语recovery days，因此空格处需填入动词的分词形式作状语。句子主句提到，一周需要做两天或三天的力量训练；空格处之后的名词中，recovery days意为“恢复期”，session意为“一段时间”，由此得知“训练期间有恢复期”是“一周做两天或三天的力量训练”的结果。allowing意为“允许；使有可能”，符合题意。
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