题目内容

He gave great importance ( )what his father said.

A. by
B. on
C. in
D. to

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She's still( )work. I'll ask her to call you when she gets home.

A. on
B. in
C. out
D. at

正常成年人的血小板数量是( )

A. (50~100)╳109/L
B. (4~10)╳109/L
C. (3.5~5.5)╳109/L
D. (100~300)╳109/L

我坐在座椅上,醉醺醺地、无聊地盯着天花板。I sat on a chair and stared at the ceiling, drunk and bored.

A. 对
B. 错

钢轨磨耗主要是()间滚动摩擦和滑动摩擦共同作用的结果。

A. 车轮
B. 车辆
C. 轮轨
D. 钢轨

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