1.选择题- (共6题)
1.如图4所示,一根跨越光滑定滑轮的轻绳,两端各有一杂技演员(可视为质点),a站于地面,b从图示的位置由静止开始向下摆动,运动过程中绳始终处于伸直状态,当演员b摆至最低点时,a刚好对地面无压力,则演员a质量与演员b质量之比为 ( )

6.据报道“嫦娥一号”和“嫦娥二号”绕月飞行器的圆形工作轨道距月球表面分别约为200 km和100 km,运行速率分别为v1和v2.那么,v1和v2的比值为(月球半径取1700 km) ( )
2.单项选择- (共8题)
7.
----Do you take _______possession of the jewels?
----No. My mother is in ________possession of them.
----No. My mother is in ________possession of them.
A.the; the | B.the; / | C. /; / | D. /; the |
8.
_______ his scientific work, he has no time to care for his family affairs, which his wife always complains about.
A.Devoting to | B.Devoted to | C.Being devoted with | D.Devoted with |
10.
- ______ Tom to be fit for the office, the boss ______ taking him on.
A.Consider, considered | B.Considering, considering |
C.Considering, considered | D.Considered, considering |
11.
After the class was over, the student apologized ___ the teacher ____ his coming late.
A.for; to | B.to; with | C.with; to | D.to; for |
12.
The police came in __________ the thief attempted to rush out of the store.
A.at the moment | B.the moment | C.for the moment | D.at any moment |
试卷分析
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【1】题量占比
选择题:(6道)
单项选择:(8道)
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【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:0
5星难题:0
6星难题:0
7星难题:0
8星难题:8
9星难题:0