[题目]We need to get to the root of the problem we can solve it.A. while B. afterC. before D. as 题目和参考答案——青夏教育精英家教网—

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【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】

试题句意：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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