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问题 选择题

如图所示，当开关S闭合时电磁铁和物体ab相互吸引，则正确的说法是

[ ]

A．ab一定是磁铁，且a端一定是N极

B．ab一定是磁铁，且a端一定是S极

C．ab可能是磁铁，且a端是S极

D．ab仅是一块铁，而不是磁铁

答案

答案：C

完形填空
完形填空。

       We are in No.10 Middle School. We have many   1   in our school.
       We can't arrive late for school. We have to be in the   2   before the lesson begins. We can't eat food
  in class. If someone is   3  , he can eat food between two lessons. But we can't buy food   4   our
  school. We have to buy it in our school shop. And we can't   5   in class. We have to be quiet.
       In English classes, we have to do some   6  . Our English teacher says it is a good way to   7  
  English. Our Chinese teacher is a tall and heavy man. He is very strict with us. We have to   8   straight
  and listen to him carefully in class. Oh, we can't stand these rules,   9   nobody can break (违反) them.
       After class, we can't run in the hallways. It's  10  sometimes. Oh, we can't talk loudly in the dining
  hall as well.

( ) 1. A. lessons        
( ) 2. A. house          
( ) 3. A. late            
( ) 4. A. outside        
( ) 5. A. do our homework
( ) 6. A. shopping        
( ) 7. A. speak          
( ) 8. A. walk            
( ) 9. A. and            
( )10. A. dangerous       		B. students              
B. classroom            
B. hungry                
B. in                    
B. listen to the teacher
B. swimming              
B. improve              
B. write                
B. or                    
B. exciting              		C. rules          
C. library        
C. busy          
C. behind        
C. wear uniforms  
C. cleaning      
C. discuss        
C. sit            
C. but            
C. difficult      		D. questions    
D. hall          
D. tired        
D. next to      
D. talk loudly  
D. reading      
D. talk          
D. run          
D. if            
D. funny        
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问答题 简答题

国家行使外交保护权应符合那些条件？
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