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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