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【单选题】
A ____is a small, uncharged individual unit of a compound formed by the union of two or more atoms.A.
ion
B.
molecule
C.
substance
D.
matter
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反馈参考答案：
举一反三
【简答题】螺旋传动主要由 、 和 组成。
【判断题】Many English compound words contain morphemes derived from French and German.
A.
正确
B.
错误
【单选题】When the world was a simpler place, the rich were fat, the poor were thin, and right-thinking people worried about how to feed the hungry. Now, in much of the world, the rich are thin, the poor are fa...
A.
bring up some warnings.
B.
tell the reader some new facts.
C.
discuss a solution to a problem.
D.
persuade the reader to keep fit.
【简答题】Many compound words contain morphemes derived from _________ or _________.
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