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The number of primary schools in the rural areas______doubling in the past 50 years.
The number of primary schools in the rural areas______doubling in the past 50 years.
admin
2019-10-05
43
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
本题考查主谓一致与时态。The number of“……的数量”,其谓语动词用单数形式;in the past 50 years“在过去的50年内”,动词应使用完成时态,且这种动作很有可能会持续下去,应用现在完成时。故选D。
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成人本科学位英语
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