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The number of primary schools in the rural areas______doubling in the past 50 ye
The number of primary schools in the rural areas______doubling in the past 50 ye
游客
2024-01-14
54
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问题
The number of primary schools in the rural areas______doubling in the past 50 years.
选项
A、are
B、is
C、have been
D、has been
答案
D
解析
考查主谓一致和动词的时态。句意:农村地区的小学数量在过去50年间已经翻了一番。该句的主语是the number,而不是其后的primary schools,因此应使用单数,而时间状语in the past 50 years对应的时态是现在完成时,故选D。
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