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U.S. News ____________ rankings of colleges since 1983. They are a very popular resource for student【单选题】

时间：2021-06-30 03:11:50 解答: 89 次

U.S. News ____________ rankings of colleges since 1983. They are a very popular resource for students looking to apply to university campus.

A. maintains

B. is maintaining

C. maintained

D. has been maintaining

正确答案：

D

参考解析：

暂无解析

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