2. 外语
  3. Exercise has long been treated as the cure-all for everything that ails you. Supporters say you will lose weight and bring your

Exercise has long been treated as the cure-all for everything that ails you. Supporters say you will lose weight and bring your

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问题     Exercise has long been treated as the cure-all for everything that ails you. Supporters say you will lose weight and bring your blood pressure【C1】______ control by walking for 2 minutes a day. 【C2】______ it were so simple. While exercise has【C3】______benefits, many of its powers have been【C4】______. Consider what science has found before you【C5】______a fitness program as the solution【C6】______your health or weight concern.
    Exercise may reduce the risk of heart disease,【C7】______ the evidence is surprisingly mixed. Most of the heart protection appears to be realized by people who go【C8】______ being sedentary to being active. Yet the data from studies have not always been【C9】______, because those who exercise tend to be very【C10】______ those who do not. 【C11】______people are much less likely to smoke, and they’re thinner than their 【C12】______who are fond of sitting for a long time. As a result, it is impossible to know with confidence whether exercise prevents heart disease【C13】______ whether people who are less likely to get heart disease are also more likely to be exercising.
    Exercise cannot bring【C14】______ weight loss. For instance, lifting weights 【C15】______ muscles but will not make you【C16】______ more calories. Jack Wilmore, an exercise physiologist, calculated that the【C17】______ amount of muscle that men【C18】______after a 12-week weight-lifting program was 2 kilograms. That added muscle would increase the metabolic rate【C19】______ only 24 calories a day. If you want to lose weight, you have to diet【C20】______ exercise.
【C19】
选项 A、of
B、for
C、on
D、by
答案D
解析 介词辨析题。句意为：增加的肌肉仅使新陈代谢每天增加24卡。介词by可以表示“以连续的单位、批量或程度计”，例如：You’ll be paid by thehour．
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