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题目内容
(陇东学院-大学英语2(专升本))
60. (单选题) The scientist ________ a method of desalting seawater(本题1.0分)
A、 decided
B、 placed
C、 perfected
D、 played
A、 decided
B、 placed
C、 perfected
D、 played
参考答案