During the last three decades, the number of people participating in physical fitness pro

During the last three decades, the number of people participating in physical fitness programs   sharply.

A.was increasing    B.has increased

C.had increased D.will be increasing

答案

【解析】B。考查时态。句意:30年来,参加健身活动的人数一直在急剧增加。during the last three decades30年来,这是包括现在时间在内的时间段,是现在完成时的时间标志,故选B

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