2. 外语
  3. Exercise is good for you, but most people really know very【C1】______about how to exercise properly. So when you try, you can run

Exercise is good for you, but most people really know very【C1】______about how to exercise properly. So when you try, you can run

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问题     Exercise is good for you, but most people really know very【C1】______about how to exercise properly. So when you try, you can run into trouble. Many people【C2】______that when specific muscles are exercised, the fat in the neighbouring area is"【C3】______up". Yet the truth is that exercise burns fat【C4】______all over【C5】______. Studies show muscles which are not【C6】______lose their strength very quickly. To regain it needs 48 to 72 hours and exercise every other day will【C7】______a normal level of physical strength. To【C8】______weight you should always "work up a good sweat" when exercising.【C9】______sweating only【C10】______body temperature to prevent over heating. This is【C11】______water loss.【C12】______You replace the liquid, you【C13】______the weight. Walking is the best and easy-to-do exercise. It helps the circulation of blood【C14】______the body, and has a direct【C15】______on your overall feeling of health. Experience【C16】______that 20 minutes’ exercise【C17】______is minimum amount.【C18】______your breathing doesn’t return to normal state within minutes after you finish【C19】______, you’ve done【C20】______.
【C12】
选项 A、While
B、Once
C、As
D、Whenever
答案B
解析 连接词的使用。意思是“一旦”，引起时间状语从句，余者不合文意。
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大学英语四级

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