He gave great importance ( )what his father said.
查看答案
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