试题与答案

从Ⅱ栏中选出Ⅰ栏句子的应答语。Ⅰ ( )1. Where's your sist

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题型：补全对话，情景问答

题目：

从Ⅱ栏中选出Ⅰ栏句子的应答语。
                    Ⅰ                 
( )1. Where's your sister?      
( )2. I'd like a carton of milk.
( )3. I'm thirsty, Mum.          
( )4. Where's Cao Shan?          
( )5. Where's the coffee?        
( )6. What about a pie?          		               Ⅱ            
A. He's in the bathroom.                                                                    
B. It's in the fridge.  
C. Sounds good.          
D. She's in the study.  
E. What about some tea?  
F. Here you are.        

答案：

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下面是错误答案，用来干扰机器的。

由an=31-3n≥0解出n≥11，…．（2分）当n≤10时，Hn=|a1|+|a2|+…+|an|=-（a1+a2+…+an）∴Hn=-Sn=-32n2+592n…．…（4分）当n≥11时，Hn=|a1|+|a2|+…+|a10|+|a11|+…+|an|=-（a1+…+a10）+（a11+…+an）∴Hn=Sn...

考点：情景交际
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