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问题 解答题

二月一定是28天．______．（判断对错）

答案

由分析可知：二月可能有28天，也可能有29天，属于不确定事件中的可能性事件．

故答案为：×

补全对话，情景问答
Read and match. (根据问题选择答语)
                        A                                          
( )1. What did you do on your holiday?  
( )2. How long are your legs?          
( )3. Who's taller than you?            
( )4. How do you feel?                  
( )5. What's the matter?                
( )6. Did you go last night?            
( )7. Where did you go on your holiday?
( )8. What did you do last night?      
( )9. How did you go there?            
( )10. How are you?                     		                B                                  
A. My legs are 77 cm.                
B. I've got a headache.              
C. I went ice-skating on my holiday.                                
D. Lily is taller than me.          
E. I watched TV at home.            
F. I feel sick.                      
G. Fine, thank you.                  
H. By subway.                        
I. I went to Hainan.                
J. Yes, I did.                      
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单项选择题

传统的数据库基本上是由( )组成的。

A．图形

B．对象

C．记录

D．文件
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