1.单选题- (共8题)
A.中子星间的引力变大 | B.中子星的线速度变小 |
C.中子星的角速度变小 | D.中子星的加速度变小 |
A.F |
B.F/2 |
C.8F |
D.4F |
A.1:9 | B.9:1 | C.1:27 | D.27:1 |
2.选择题- (共6题)
B
Mike works very long hours every day. He usually gets up at 17:00. He has a shower and makes his breakfast. What a funny time to make breakfast! After breakfast, he practices (练习) his guitar for ten minutes, then he puts on his jacket and goes to work. To get to work, he takes the No.17 bus to the Star Hotel. The bus usually leaves at 19:15. He works all night. People love to listen to him! He gets home at 7:00, and he watches the early morning news on TV. He goes to bed at 8:30, a tired but happy man. Can you think what his job is?
3.多选题- (共4题)
A.站在月球表面的登月宇航员处于失重状态 |
B.氢气球将上升,铅球将下落 |
C.氢气球和铅球都将下落,且同时落地 |
D.氢气球和铅球运动过程中都处于失重状态 |




A.











A. 地球与月球间的万有引力将变大 B. 地球与月球间的万有引力将变小
C. 月球绕地球运动的周期将变长 D. 月球绕地球运动的周期将变短
4.填空题- (共5题)
5.解答题- (共3题)

(1)物体上升的最大高度是多少?
(2)物体落回地面的时间是多少?
(1)航天员翟志刚在太空中所“走”过的路程;
(2)该宇航员距离地球表面的高度.
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【1】题量占比
单选题:(8道)
选择题:(6道)
多选题:(4道)
填空题:(5道)
解答题:(3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:2
5星难题:0
6星难题:9
7星难题:0
8星难题:8
9星难题:1