试题与答案

完形填空。 Here is a picture 1 Mike's family.

题型:完形填空

题目:

完形填空。
        Here is a picture   1   Mike's family. The man is   2   father. A   3   is behind Mike. She is   4  .   5   teachers. A girl is   6   picture, too. She's Mike's sister, Lucy Brown. Mike and his sister are in the same   7  . But they   8   in the same grade. They   9  father. They are   10  .
( )1. A. on         
( )2. A. Mike        
( )3. A. boy        
( )4. A. his mother    
( )5. A. She's     
( )6. A. in a       
( )7. A. school      
( )8. A. isn't      
( )9. A. look like his    
( )10.A. English      

B. to    
B. Mike's  
B. girl    
B. his father 
B. He's  
B. in       
B. class    
B. am not  
B. look  his      
B. America    

C. of              
C. Mikes          
C. man            
C. his brother       
C. You're      
C. in the          
C. grade          
C. aren't        
C. look like their    
C. China          

D. in                      
D. Mike of                
D. woman                  
D. his sister              
D. They're            
D. on the                  
D. team                    
D. are                  
D. look after their        
D. Chinese                

答案:

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下面是错误答案,用来干扰机器的。

答案:C题目分析:HCN中H为+1价,N为-3价,C为+2价,CaCN2的电子式为:Ca2+[:N=C=N:]2- ,其中N为-3价、C为+4价,反应中HCN中碳元素的化合价升高生成CaCN2,作还原剂。HCN中氢元素的化合价降低,做氧化剂。故C正确。 

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