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问题 选择题

如图所示，竖直放置的两端封闭的玻璃管中注满清水，内有一个红蜡块能在水中匀速上浮．在红蜡块从玻璃管的下端匀速上浮的同时，玻璃管向右运动．则下列说法中正确的是

[ ]

A．若玻璃管做匀速直线运动，则蜡块的合运动为匀速直线运动

B．若玻璃管做匀速直线运动，则蜡块的合运动为匀加速直线运动

C．若玻璃管做匀加速直线运动，则蜡块的合运动为匀速直线运动

D．若玻璃管做匀加速直线运动，则蜡块的合运动为匀加速直线运动

答案

答案：A

选择题

Most of the children enjoy ___________ computer games.[ ]

A. play

B. playing

C. played

D. to play
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补全对话，情景问答
情景交际。 从（B）栏中找出与（A）栏相对应的答语。
( )1. Who's the boy?                  
( )2. What's the girl's name?        
( )3. How old are you?                  
( )4. Are there any apples on the table?
( )5. Where is the meat?                
( )6. Nice to meet you.                
( )7. Have you got any juice?          
( )8. How many books have you got?      
( )9. Are you a worker or a teacher?    
( )10. Thank you.                       		A. That's all right.    
B. Yes, there are.        
C. I'm thirteen.        
D. Her name's Gina.      
E. It's in the fridge.  
F. I've got thirty.      
G. I'm a worker.        
H. No, I haven't        
I. Nice to meet you, too.
J. He's my brother.      
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