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Scientists have many theories about how the universe into be

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Scientists have many theories about how the universe into being.
A. came B. was coming C. had come D. would come
Scientists have many theories about how the universe into be
答案A 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,.查看原帖