2. 外语
  3. During the last three decades, the number of people participating in physical fitness programs______sharply.

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

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问题 During the last three decades, the number of people participating in physical fitness programs______sharply.
选项 A、has increased
B、were increasing
C、had increased
D、have increased
答案A
解析 这是一道语法题，考点是现在完成时的用法。现在完成时表示事情发生在过去，持续或影响到现在。
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成人本科学位英语

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