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问题 选择题

方程x2-3x+2=0的解是（　　）

A．1和2

B．-1和-2

C．1和-2

D．-1和2

答案

x2-3x+2=0，

因式分解得：（x-1）（x-2）=0，

可得：x-1=0或x-2=0，

解得：x1=1，x2=2．

故选A

完形填空
完形填空。

Dear David,
     Please    1    to my home for    2    at six this evening. Now let    3    tell you    4    to get to my home.
When you walk out of school, you should    5    a No.2 bus and then    6    at Xinhua Road. Then turn rigt
into Dongfeng Street and walk    7    this street. Take the first turnig    8    the left. My home is in the third
building on the right. There is a big tree    9    the building. I live on the fifth floor. And I'll   10   for you at
the gate. 
                                                                                                                                                Yours, 
                                                                                                                                                 Li Lei

( )1.A.come  
( )2.A.meal  
( )3.A.I     
( )4.A. what  
( )5.A.drive  
(     )6.A.get off   
( )7.A.on   
( )8.A.at    
( )9.A.in   
( )10.A.look  		B.go   
B.breakfast
B.me    
B.when    
B.see    
B.get on      
B.long  
B.on    
B.at    
B.wait   		C.walk       
C.lunch     
C.my         
C.how       
C.take       
C.get out    
C.down       
C.in        
C.in front of  
C.meet      		D.run           
D.supper        
D.mine          
D.why           
D.by            
D.get out of                        
D.up            
D.of          
D.in the front  
D.see         
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单项选择题

KVV-4×1.5电缆是（）。

A、电力电缆

B、铝芯控制电缆

C、铜芯控制电缆

D、带屏蔽电缆
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