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问题 单项选择题 A1/A2型题

酶标板用抗原包被后要进行封闭的主要原因是（）.

A.使抗原固化到聚苯乙烯板上

B.增加酶标板的稳定性

C.保护包被抗原的免疫活性

D.防止非特异反应

E.使酶的工作浓度最佳

答案

参考答案：D

解析：固相载体表面存在能与血清标本和酶结合物中的蛋白质非特异性结合的位点，产生非特异性的显色反应，使本底升高。

单项选择题 B型题

伸直患侧肘关节，前臂旋前，检查者将患侧腕关节屈曲，若肱骨外上区疼痛为阳性，提示有肱骨外上髁炎（）

A.形态检查

B.功能检查

C.疼痛检查

D.腕伸肌紧张试验（Mills征）

E.肘外翻挤压试验
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选择题
完形填空。

     Hidden passengers traveling in ships, trains, or even cars can be a terrible trouble-especially when they
are insects. As for this, there is a great   1   between human beings and insects. The former   2   every
possible effort to avoid being discovered, while the latter quickly  3    attention to themselves.
     We can only show mercy to the   4   man who had to stop his car soon after   5   from a country village
to drive to London. Hearing a strange noise from the   6   of the car, he naturally got out to   7   the wheels
 carefully, but he found nothing wrong, so he   8   his way. Again the noise began   9   and became even
louder. Quickly  10   his head, the man saw what appeared to be a great  11   cloud following the car. When
he stopped at a village further on, he was told that a queen been must be hidden in his car as there were
thousands of bees  12  .
     On learning this, the man drove away as quickly as possible. After an hour's   13   driving, he arrived
safely in London, where he parked his car outside a  14   and went in. It was not long   15   a customer who
had seen him arrive   16   in to inform him that his car was   17   with bees. The poor driver was   18   that
the best way should be to call a  19  . In a short time the man arrived. He found the unwelcome passenger
hidden near the wheels at the back of the car. Very thankful to the driver for this   20  gift, the bee-keeper took
the queen and her thousands of followers home in a large box.

( )1. A. connection   
( )2. A. do           
( )3. A. give         
( )4. A. unfortunate 
( )5. A. passing by   
( )6. A. front        
( )7. A. clean       
( )8. A. drove                      
( )9. A. normally     
( )10. A. hiding     
( )11. A. black       
( )12. A. below       
( )13. A. boring     
( )14. A. hotel       
( )15. A. when        
( )16. A. broke       
( )17. A. crowded     
( )18. A. advised     
( )19. A. bee-keeper 
( )20. A. unfamiliar  		B. difference   
B. take         
B. keep         
B. careless     
B. leaving out  
B. back         
B. change       
B. continued    
B. gently        
B. turning                   
B. beautiful   
B. ahead       
B. careful     
B. museum       
B. after       
B. moved       
B. covered      
B. required     
B. policeman    
B. unknown    		C. communication
C. make         
C. pay         
C. unpleasant   
C. setting out 
C. left         
C. test         
C. pushed                    
C. actually     
C. shaking     
C. white        
C. nearby                         
C. exciting     
C. hospital     
C. until       
C. hurried     
C. filled       
C. ordered     
C. waiter       
C. unexpected    		D. similarity                  
D. try                         
D. draw                        
D. hopeless                    
D. getting up                  
D. right                       
D. examine                     
D. forced                      
D. immediately                 
D. raising                     
D. colorful                    
D. behind                      
D. hard                        
D. school                      
D. before                      
D. dropped                     
D. equipped                    
D. requested                   
D. repairman                   
D. uncertain                
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