试题与答案

真核细胞基因表达的调控主要发生在()、()和()三个水平上。

题型:填空题

题目:

真核细胞基因表达的调控主要发生在()、()和()三个水平上。

答案:

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题型:完形填空
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     In our discussion with people on how education can help them succeed in life, a woman remembered
the first meeting of an introductory __1__ course about 20 years ago.
     The professor __2__ the lecture hall, placed upon his desk a large jar filled with dried beans (豆), and
invited the students to __3__ how many beans the jar contained.After __4__ shouts of wildly wrong
guesses the professor smiled a thin, dry smile, announced the __5__ answer, and went on saying, "You
have just __6__ an important lesson about science. That is: Never __7__ your own senses."
     Twenty years later, the __8__ could guess what the professor had in mind. He __9__ himself,
perhaps, as inviting his students to start an exciting __10__ into an unknown world invisible (无形的) to
the __11__ , which can be discovered only through scientific __12__. But the seventeenyearold girl
could not accept or even __13__ the invitation. She was just __14__ to understand the world. And she
__15__ that her firsthand experience could be the __16__ .The professor, however, said that it was
__17__. He was taking away her only __18__ for knowing and was providing her with no substitute
(替代). "I remember feeling small and __19__ , " the woman says, "and I did the only thing I could do.
I __20__ the course that afternoon, and I haven't gone near science since."
( )1. A. art        
( )2. A. searched for
( )3. A. count      
( )4. A. warning    
( )5. A. ready      
( )6. A. learned    
( )7. A. lose        
( )8. A. lecturer    
( )9. A. described  
( )10. A. voyage    
( )11. A. professor  
( )12. A. model      
( )13. A. hear      
( )14. A. suggesting  
( )15. A. believed  
( )16. A. growth    
( )17. A. firm      
( )18. A. task      
( )19. A. cruel      
( )20. A. dropped   
B. history      
B. looked at    
B. guess        
B. giving      
B. possible    
B. prepared    
B. trust        
B. scientist    
B. respected    
B. movement    
B. eye          
B. senses      
B. make        
B. beginning    
B. doubted      
B. strength    
B. interesting  
B. tool        
B. proud        
B. started      
C. science    
C. got through  
C. report      
C. turning away
C. correct    
C. taught      
C. sharpen    
C. speaker     
C. saw        
C. change      
C. knowledge  
C. spirit      
C. present    
C. pretending  
C. proved      
C. faith      
C. wrong      
C. success    
C. frightened  
C. passed      
D. math            
D. marched into    
D. watch          
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D. taken          
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D. woman          
D. served          
D. rush            
D. light          
D. methods        
D. refuse          
D. waiting        
D. explained      
D. truth          
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