题目内容
With the development of science and technology, people’s life _______ in the past few years.
A. improved B. has improved
C. is improving D. had improved
选B。根据句子后面的时间状语in the past few years可以知道句子应该使用现在完成时。

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题目内容
With the development of science and technology, people’s life _______ in the past few years.
A. improved B. has improved
C. is improving D. had improved
选B。根据句子后面的时间状语in the past few years可以知道句子应该使用现在完成时。