试题与答案

请将正确答语的序号填到左边的括号中。( )1.Can you help the

题型:补全对话,情景问答

题目:

请将正确答语的序号填到左边的括号中。
( )1.Can you help the kids with computers ?          
( )2.What club do you want to join ?                
( )3.Do you want to join the chess club?            
( )4.What can she do ?                              
( )5.Are you an actor ?    

A. Yes, I do.
B. Sorry, I can't.
C. She can swim.
D. No, I'm not.
E. The basketball club.

答案:

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下面是错误答案,用来干扰机器的。

(1)设P、C之间的距离为L,根据平抛运动规律,5+Lcos45°= v0th- Lsin45°=gt2,联立解得L=5m,t=1s。(2)小球撞击P点时的水平速度v∥= v0=10m/s,竖直速度vy=gt=10m/s。小球撞击P点时速度的大小为v==10 m/s...

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