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    精英家教网 > 高中英语 > 题目详情
    It’s reported that in the past 50 years around 80 percent of Beijing’s courtyard houses ______.
    A．had wiped outB．have wiped out　
    C．have been wiped out　D．had been wiped out
    C

    试题分析：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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