试题与答案

在主从同步数字网中，从站时钟通常有三种工作模式：（）、（）、自由振荡模式。

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题型：填空题

题目：

在主从同步数字网中，从站时钟通常有三种工作模式：（）、（）、自由振荡模式。

答案：

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     The next morning, she __7__ with the personnel manager at the Board of Education. He told her
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aren't you? I think I have a __10__ for you as a teacher's assistant. This opportunity deals with children
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__12__. For almost five years, as a teacher's assistant, she saw teacher after teacher give up on the
children and quit, feeling __13__. Then one day, the personnel manager and the principal __14__ in
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( )1. A. noise  
( )2. A. get    
( )3. A. otherwise  
( )4. A. settled  
( )5. A. teacher  
( )6. A. purpose  
( )7. A. went    
( )8. A. visit  
( )9. A. serious  
( )10. A. career  
( )11. A. learning  
( )12. A. patiently  
( )13. A. upset    
( )14. A. looked up  
( )15. A. believe  
( )16. A. spirit  
( )17. A. must  
( )18. A. At    
( )19. A. worthless  
( )20. A. challenging  		B. voice  
B. take    
B. anyhow  
B. pushed  
B. employer  
B. encouragement
B. met   
B. continue  
B. fortunate  
B. duty    
B. judging  
B. eagerly      
B. frightened  
B went up      
B. protect  
B. intention  
B. would  
B. During  
B. thoughtless  
B. different    		C. sound   
C. carry  
C. instead  
C. stored  
C. director
C. achievement  
C. worked    
C. attend  
C. careful  
C. position  
C. obeying  
C. successfully
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D. victory      
D. stayed      
D. prepare      
D. responsible  
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D. skillfully  
D. ashamed      
D. showed up    
D. receive      
D. attempt      
D. should      
D. With        
D. helpless    
D. strange      
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