判断一个物体做匀速直线运动的依据是 [ ] A．每隔1s沿直线_爱下问搜题

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问题选择题

判断一个物体做匀速直线运动的依据是 [ ]

A．每隔1s沿直线运动的路程相等

B．只需物体的速度大小不变

C．1s内运动5m，2s内运动10m，3s内运动15m

D．任何相等的时间内，沿直线运动的路程都相等

答案

答案：D

选择题

给下列词组选择最佳搭档。

( ) 1. watch
( ) 2. class
( ) 3. excuse
( ) 4. turn
( ) 5. go
( ) 6. office

A. building
B. to the city
C. me
D. TV
E. left
F. room

完形填空

A lady once wrote a long story. She sent it to a famous editor. After a few weeks the editor 21 the story to her. The lady was 22 . She wrote back to the editor:
“Dear Sir.
Yesterday you sent back a story of mine. How do you know that the story is not good? You did not read it. 23 I sent you the story, I pasted together pages 18, 19 and 20. This was a 24 to see whether you would read the story. When the story came back yesterday, the pages were 25 pasted together. Is this the way you read all the stories that are sent to you?”
The editor wrote back:
“Dear Madam,
At breakfast then I have an egg. I don’t have to eat the whole egg in order to discover(发现) that it is bad.”