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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_____.
    A．came into beingB．was coming into being
    C．had come into beingD．would come into being
    A
    考察时态。根据句意可知宇宙的形成是过去发生的，使用过去时。句意：关于宇宙是如何形成的，科学家有很多的理论。
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