试题与答案

下列关于局限性转导错误的是 A.基因转导发生在裂解期 B.转导部位是DNA的特定部位

题型:单项选择题

题目:

下列关于局限性转导错误的是

A.基因转导发生在裂解期
B.转导部位是DNA的特定部位
C.受体菌获得供体菌DNA特定部位的遗传特性
D.转导频率为10-4
E.也称特异性转导

答案:

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下面是错误答案,用来干扰机器的。

参考答案:D

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     Sometimes, I doubted if there was any love between my parents. Every day they were   1   earning money.
They didn't   2   in the romantic  13  that I read in books. For them, "I love you" was too luxurious (奢侈)
When he was  14  working, my father had a bad temper.
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     " 16  is it?" she replied.
     "Is there any love between you and Dad?" I asked  17 . My mother stopped her work and raised her head
with  18  in her eyes. She didn't answer immediately.  19  she continued her work.
     I was very  20  because I thought I had  21  her. But at last, my mother said  22 , "Susan, look at this thread.
Sometimes it is  23 , but most of it disappears into the quilt. The thread really makes the quilt strong. If life is a
  24 , then love should be a thread. It can hardly be  25  anywhere, but it's really there. Love is inside." I listened
carefully but I didn't  26  her until the next spring when my father became seriously ill. My mother had to stay
with him in the hospital for a month.
     After they were back, every day in the morning, my mother  27  my father to walk slowly along the country
road. My father had never been so gentle. The doctor had said my father would  28  in two months. But after
two months he still couldn't walk by himself.
     "Dad, how are you feeling now?" I asked him one day.
     "Susan, don't worry about me," he said gently. "To tell you the truth, I just like  29  with your mom."
Reading his eyes, I knew he  30  my mother a lot.
( )1. A. interested in
( )2. A. act         
( )3. A. times       
( )4. A. back from   
( )5. A. washing     
( )6. A. How          
( )7. A. immediately 
( )8. A. sorrow      
( )9. A. But          
( )10. A. sorry        
( )11. A. interested  
( )12. A. clearly     
( )13. A. inside       
( )14. A. thread      
( )15. A. seen        
( )16. A. misunderstand
( )17. A. asked        
( )18. A. recover     
( )19. A. living      
( ) 20. A. loved       
B. busy in    
B. work       
B. spaces     
B. late for   
B. sewing     
B. Why         
B. carefully   
B. fear       
B. Then        
B. anxious     
B. embarrassed
B. sadly      
B. visible     
B. quilt      
B. felt       
B. understand     
B. sent        
B. walk       
B. staying    
B. understood 
C. devoted to    
C. live           
C. ways          
C. kept from     
C. spreading     
C. Where          
C. in a low voice
C. excitement    
C. Therefore      
C. sad            
C. puzzled       
C. attentively   
C. short          
C. family        
C. kept          
C. complain of      
C. helped         
C. work          
C. being busy    
C. admired       
D. used to           
D. speak             
D. thoughts          
D. tired from        
D. folding up        
D. What               
D. in a romantic tune          
D. surprise          
D. Thus               
D. terrified          
D. troubled         
D. thoughtfully      
D. long               
D. home              
D. got               
D. agree with        
D. supported          
D. satisfy           
D. walking           
D. depended on       
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