题目内容

7. The Gulf Stream is a warm ocean currentstarts in the Gulf of Mexico and flows northeast across the Atlantic.

   A. that   B. which

   C. /   D. both A and B

7. D

7. D解析:考查定语从句。先行词cur-rent在定语从句中作主语,关系代词作 主语时不能省略,故选D项。

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