单选题
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
【正确答案】
B
【答案解析】
[解析] 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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