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问题 选择题

Nick, it's good for you to read some books _____ China before you start your trip there. [ ]

A. in

B. for

C. of

D. on

答案

答案：D

完形填空

根据短文内容和首字母提示，填入所缺单词。

A tragic mystery happened in South-east Asia. Malaysia(马来西亚) Airlines flight 370 t 小题1: off early Saturday morning, March 8th, in 2014. It was headed from Kuala Lumpur, Malaysia to Beijing, China. There were 12 crew members and 227 passengers on board, i小题2:  154 Chinese. But less than an hour into the flight, it d 小题3:. There was no communication from the pilots and no distress calls(遇险求救信号). There was something u 小题4: about the flight. Some of the people on it weren't who they said they were. Interpol, an international police organization says at l小题5: two of the passports were stolen in the past two years. The f 小题6: thing is to find the plane. It is said that the plane may have changed course and turned b 小题7: towards Kuala Lumpur. We don’t know w 小题8: exactly happened to the plane. All of us hoped it could return safely. However, 17 days l 小题9: after the accident, Malaysian Prime Minister told the world that flight MH370 ended in the southern Indian Ocean and none of those on board survived. What bad n 小题10:!
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不定项选择

如图所示，将小球a从地面以初速度v0竖直上抛的同时，将另一相同质量的小球b从距地面h处由静止释放，两球恰在处相遇（不计空气阻力）。则

[ ]

A．两球同时落地

B．相遇时两球的速度大小相等

C．从开始运动到相遇，球a动能的减少量等于球b动能的增加量

D．相遇后的任意时刻，重力对球a做功功率和对球b做功功率相等

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