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    精英家教网 > 高中英语 > 题目详情

    【题目】We need to get to the root of the problem ________ we can solve it.
    A.while
    B.after
    C.before
    D.as

    【答案】C
    【解析】句意：在我们解决问题之前，我们需要找到问题的根源。A. while“当……时候，而”；B. after“在……之后”； C. before “在……之前”；D. as“正如”。根据句意可知选C。

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