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【单选题】
“物以类聚,人以群分”这句话说的是人际关系中的 ( )。A.
态度相似性
B.
需求互补性
C.
时空邻近性
D.
群体差异性
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【简答题】Sometimes I feel that being the mother of three small children is like operating a large circus(马戏团).21 afternoon last week，my three sons playing peacefully in the back yard(院子)，22 the ball from one t...
【单选题】听力原文：W: Hello, Kevin. I haven't seen you for many days. What's the problem with you? M: Actually I'm a little embarrassed about coming here. I feel fine right now. (23)But you know, every year around ...
A.
He gets ill at the same time every year.
B.
He doesn't get enough exercise.
C.
He often has difficulty sleeping.
D.
He's sick with influenza throughout the winter.
【简答题】作动筒属于飞机液压系统的( )元件。
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