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During the last three decades, the numbe...

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

 

B 【解析】 试题分析:考查动词的时态语态。从句意“在过去的三十年中,参加健身锻炼的人数已经增加很多了”知,increase的动作虽然发生在过去,但一直持续到现在,同时由题眼“during the last three decades”可知,该空中应该用现在完成时态,所以只有B项符合语境。 【名师点睛】时态题的考查关键是抓住句子的上下文含义和句中的时间状语。要根据时间状语来选择合适的时态,在平时的学习中要注意积累有关时态的用法和各种时态的特殊之处。这句话的时间状语是During the last three decades是典型的现在完成时的时间状语。  
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