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问题 单项选择题 A1/A2型题

下列属于人工主动免疫制剂的是（）

A.抗毒素

B.抗菌血清

C.白喉类毒素

D.抗病毒血清

E.丙种球蛋白

答案

参考答案：C

解析：白喉类毒素属于主动免疫制剂，是利用细菌外毒素制成的制剂。其余四种都是免疫血清，直接为人体提供抗体，属于被动免疫制剂。

完形填空
完形填空 。    
阅读下列短文，选择可以填入空白处的最佳选项。
Dear Mom and Dad,
         I will go to Alice's home with her after school, and I will have supper and sleep there. Don't    1     about me. You know that Alice is one of my   2   friends. If you want to talk with me, you can    3    68610598 after 6:00 pm.Please forgive (原谅) me for not telling you first. I don' think you will    4     me to do so if I tell you first.  5  I think teenagers should be allowed to stay at their friends' houses sometimes. I am sixteen years old and I'm not a little kid    6     . I hope I can make decisions for    7   .At home, there are too many rules for me to    8     : Don't stay out so    9    ; don't have meals before   10    hands; don't watch TV without finishing homework, etc. Parents should be    11   teenagers, but we need freedom, too.I don't like doing my homework    12    at home. I'd love to study    13    Alice. We can learn a lot from each other.    14    please allow me to stay at Alice's house once a week. If you    15    , Alice can stay at our house with me, too.                                                    
                                                                                                Yours,                                                    
                                                                                                Lillian
( )1. A. care      
( )2. A. bad      
( )3. A. look      
( )4. A. let      
( )5. A. Unless    
( )6. A. anymore  
( )7. A. himself  
( )8. A. break    
( )9. A. late      
( )10.A. giving    
( )11.A. afraid of
( )12.A. along    
( )13.A. with      
( )14.A. Or        
( )15.A. worry    
                        

B. hear            
B. best            
B. call            
B. take            
B. Or              
B. either          
B. herself          
B. volunteer        
B. early            
B. washing          
B. interested in    
B. alone            
B. on              
B. Although        
B. think            
                    

C. talk          
C. well          
C. write          
C. allow          
C. But            
C. neither        
C. yourself      
C. make          
C. hardly        
C. putting        
C. strict with    
C. lonely        
C. for            
C. So            
C. agree          
                  

D. worry                    
D. worst                    
D. play                      
D. teach                    
D. Even though              
D. no longer                
D. myself                    
D. obey                      
D. exactly                  
D. holding                  
D. angry with                
D. own                      
D. from                      
D. Because                  
D. make                      
                            

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阅读理解

阅读理解。

     The girls in this sixth grade class in East Palo Alto, California, all have the same chance to use computers

as boys, but researchers say, by the time girls get to high school, they may be victims (牺牲品) of what

researchers call "a major new gap in technology".

     "Girls are likely to be less comfortable than boys with the computers. They use it more for word processing

rather than for problem solving rather than discover new ways in which to understand information."

     After reexamining a thousand studies, the American Association of University Women Researchers found

that girls make up only a small percentage of students in computer science classes. Girls usually consider

themselves significantly lower than boys in their ability and confidence in using computers. And they use

computers less often than boys outside the classroom.

     Six years ago, the software company Purple Moon noticed girl's computer usage was falling behind boys.

The number one reason girls told us they don't like traditional computer games is not because they're too

violent or much too competitive. Girls would say they're boring.

     Purple Moon says it found what girls want: characters they can relate to and story lines relative to what's

going on in their own lives. "But we found from girls that there's no intrinsic (内在的) reason why they

wouldn't want to play on the computer. It was a just a content thing." The sponsor (发起人) of the study

says: The technology gap that separates girls from boys must be closed if women are to compete effectively

with men in the Twenty First Century.

1. The American Association of University Women Researchers found _____.

A. girls prefer to solve problems rather than use word processing with the computer

B. girls are lack of ability and confidence in using computers

C. only a small number of girls attend the computer science classes in high school

D. the girls don't like computer games because they are too violent or competitive

2. According to the study of Purple Moon, computer games aren't considered _____ by the girls.

A. interesting

B. violent

C. competitive

D. boring

3. If the content of traditional computer games changed, most girls would probably _____.

A. be against them

B. be in favor of them

C. give up using word processing

D. learn computers quickly

4. In the sponsor's opinion, why must the technology gap be got rid of in the 21st century?

A. Because women can have an effective competition.

B. To improve women's social position.

C. For an unknown reason.

D. Because bosses won't look down upon women.

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