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    精英家教网 > 高中英语 > 题目详情

    Scientists have many theories about how the universe         into being.

    A．came B．was coming C．had come D．would come

    A

    解析试题分析：考查时态。宇宙的形成是过去发生的事情，故使用一般过去时。句意：科学家们有很多关于宇宙是如何形成的理论。根据句意说明A正确。
    考点：考查时态
    点评：对于时态的考查要放个在具体的语境中，不能孤立，。
    A. I had reached       B. had I reached    C. did I reach     D. I have reached

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