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问题
判断题
病毒对人类只有害处没有益处。[ ]
答案
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选择题
All these gifts must be mailed immediately _____ in time for Christmas.
A. in order to have received
B. in order to receive
C. so as to be received
D. so as to be receiving
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多项选择题
液化石油气充装站必须取得政府（）等有关部门的批准。
A.规划
B.税务
C.工商
D.消防
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