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【多选题】
两物体从不同高度自由落下,同时落到同一水平地面上.第一个物体下落时间为t,第二个物体下落时间为t/2.则当第二个物体开始下落时,两物体相距( )
A.
gt
2
B.
3gt
2
/8
C.
3gt
2
/4
D.
gt
2
/4
题目标签:
时间
水平地面上
平地
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参考答案:
D
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纠错
举一反三
To ______ the amount of pollution, people are planting trees, cleaning up rivers and recycling waste.
A.
release
B.
shorten
C.
reduce
D.
decline
查看完整题目与答案
What the teacher said had a(n) ______ on Tom. He has been studying hard these days.
A.
effect
B.
effort
C.
affection
D.
support
查看完整题目与答案
Tom, with several children, ______ the coast now, so you can’t speak to him.
A.
are heading for
B.
is going for
C.
is heading for
D.
are going for
查看完整题目与答案
It is reported that the drivers who use mobile phones while driving are more ______ to have accidents.
A.
probable
B.
possible
C.
perhaps
D.
likely
查看完整题目与答案
— Do you think the film is good? — Terrific! ______
A.
It couldn’t be better.
B.
It could be better.
C.
It is still better.
D.
It couldn’t be worse
查看完整题目与答案
相关题目:
To ______ the amount of pollution, people are planting trees, cleaning up rivers and recycling waste.
A.
release
B.
shorten
C.
reduce
D.
decline
查看完整题目与答案
What the teacher said had a(n) ______ on Tom. He has been studying hard these days.
A.
effect
B.
effort
C.
affection
D.
support
查看完整题目与答案
Tom, with several children, ______ the coast now, so you can’t speak to him.
A.
are heading for
B.
is going for
C.
is heading for
D.
are going for
查看完整题目与答案
It is reported that the drivers who use mobile phones while driving are more ______ to have accidents.
A.
probable
B.
possible
C.
perhaps
D.
likely
查看完整题目与答案
— Do you think the film is good? — Terrific! ______
A.
It couldn’t be better.
B.
It could be better.
C.
It is still better.
D.
It couldn’t be worse
查看完整题目与答案
参考解析:
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