问题 选择题

It’s reported that in the past 50 years around 80 percent of Beijing’s courtyard houses ______.

A.had wiped out

B.have wiped out 

C.have been wiped out 

D.had been wiped out

答案

答案:C

题目分析:考查时态及语态。根据句中的时间状语in the past 50 years在过去的50年,故用现在完成时。再根据courtyard houses与wipe out为被动关系,故用被动语态。句意:据报道,在过去的50年中,大约80的北京四合院被摧毁。故C正确。

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