问题 不定项选择

如图所示,匀速转动的水平圆盘上,沿半径方向放着用细线连着的质量相等的物体A和B,它们与盘间的动摩擦因数相等。当圆盘转速加快到两物体刚要滑动且尚未滑动的状态时,烧断细线,则两物体的运动情况是

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A.两物体均沿切线方向滑动

B.两物体均沿半径方向做远离圆心的运动

C.两物体随盘一起做匀速圆周运动,不发生滑动

D.物体A随盘一起做匀速圆周运动,不发生滑动

答案

答案:D

写作题

请根据表格提示,写一篇英语短文,介绍凯特星期天一天的生活情况。(6分)

要求:1.必须用上所有的信息内容,并可适当发挥;

2.词数:50词左右。

Kate’s busy Sunday

Time    Activity

6:50 a.m.   get up

7:30- 9:30 a.m. do her homework

10:30-11:30 a.m.    clean the house

2:30- 3:30 p.m. play the piano

4:00-5:30 p.m.  play basketball

7:00-8:00 p.m.  watch TV

…  …

Kate’s busy Sunday

Kate is always busy on Sunday                                                     

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单项选择题