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    精英家教网 > 高中英语 > 题目详情
    According to a UN report, some 844 animals and plants ______ in the last 500 years.
    A．disappeared B．were disappeared
    C．have disappeared D．had been disappeared
    C
    考察时态，根据题意根据联合国报告，在过去500年中大约844中动物和植物已经消失。说的是过去发生到现在已经完成的事情，故选C，现在完成时态。
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