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问题 选择题
若x1、x2是方程2x2+3x-4=0的两根，则（　　）
A．x1+x2=-
3
2
，x1x2=2		B．x1+x2=
3
2
，x1x2=-2
C．x1+x2=-
3
2
，x1x2=-2		D．x1+x2=
3
2
，x1x2=2
答案

根据题意可得x1+x2=-

3
2
，x1•x2=-2．

∴A、B、D错误，C正确．

故选C．

补全对话，情景问答
将相匹配的语句连起来。
( )1. Here you are.                  
( )2. I like skipping.                
( )3. What's this?                    
( )4. Pass me the rice, please.      
( )5. What do you do at seven o'clock?
( )6. What's your favourite song?    
( )7. What are they?                  
( )8. Do you like fish?              
( )9. Does Tingting like rice?        
( )10. What's the time?               		A. I watch TV          
B. OK.                  
C. Thank you.          
D. I like skipping, too.
E. It's a monkey.      
F. Yes, I do.          
G. It's half past five.
H. It's the ABC song.  
I. They are lions.      
J. No, she doesn't.                                                             
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问答题

试述学校德育的功能。
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