听录音，选择正确的应答。
(     ) 1. A. He's my brother.        
(     ) 2. A. Yes,l'm a doctor.        
(     ) 3. A. Yes, he is.              
(     ) 4. A. It's two.                
(     ) 5. A. The one with a big nose. 		B. She's my sister.  
B. I'm a doctor.    
B. Yes, she is.      
B. Two kilos, please.
B. She's Yang Ling.     		C. They're my friends.  
C. Yes,you're a doctor.  
C. She's a policeman.    
C. Two yuan, please:    
C. Yes, she is.          
1~5  B  B  B  C  A
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