China is one of the countries the Mekong River flows.A. in which B. by whichC. across which D. through which 题目和参考答案——青夏教育精英家教网—

题目内容

China is one of the countries ________ the Mekong River flows.

A. in which B. by which

C. across which D. through which

【解析】

试题分析：句意：中国是澜沧江流经的国家之一。flow through 流经（暗含从内部经过）；flow across流过（暗含从表面经过）故选D。

考点：考查定语从句中介词+ which。

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