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精英家教網 > 高中英語 > 題目詳情

【題目】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:在我們解決問題之前,我們需要找到問題的根源。A. while“當……時候,而”;B. after“在……之后”; C. before “在……之前”;D. as“正如”。根據句意可知選C。

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