问题 单项选择题

具有干扰病毒感染和复制作用的是

A.IL-1
B.IL-2
C.TNF
D.IFN
E.CSF

答案

参考答案:D

完形填空
完形填空。
     I am a secondary school student. I __1__ in __2__ . There are__3__ students in my class. __4__
  monitor (班长 ) is a very lovely__5__ . He is often very __6__ . This is a picture __7__ him. He is short
  and thin. He __8__ two small eyes and a big mouth. He __9__  like a little teacher. He is the head of us.
  And he __10__ very hard. He is 12 years old. We are good friends and we often help each other.
( ) 1. A. is              
( ) 2. A. class 3,grade 1
( ) 3. A. fifty-seven  
( ) 4. A. our           
( ) 5. A. girl         
( ) 6. A. sad           
( ) 7. A. on           
( ) 8. A. have          
( ) 9. A. looks        
( ) 10. A. is study     
B. study         
B. grade l, class 3
B. fivety-seven  
B. Our          
B. boy            
B. tall          
B. for            
B. has           
B. looking        
B. study       
C. studies        
C. Class 3, Grade 1
C. fifty seven  
C. the          
C. teacher      
C. fat          
C. of            
C. is            
C. is look        
C. is studies      
D. are            
D. Grade 1, Class 3
D. fivety seven    
D. my              
D. children        
D. happy          
D. to              
D. are            
D. is looks        
D. studies        
单项选择题