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题目内容
(华北水利水电大学混凝土结构设计原理)
It is ______ that he know how to use the computer in his work. ( )(本题2.0分)
A、 positive
B、 primary
C、 desirable
D、 particular
A、 positive
B、 primary
C、 desirable
D、 particular
参考答案