问题 单项选择题 A1/A2型题

咪唑类抗真菌药的主要作用机制是()

A.干扰细菌细胞壁合成

B.损伤细胞膜

C.影响细菌蛋白质的合成

D.抑制细菌核酸的形成

E.抑制二氢叶酸合成酶

答案

参考答案:B

解析:咪唑类药物可抑制真菌细胞膜中固醇类的生物合成而影响其通透性。

完形填空
完形填空。
     Man has invented four kinds of satellites. The first kind of satellite studies the  1  of the earth. It is used
to make maps. It also helps countries to see where they may  2  0il or gold.
     The second kind of satellite is used to guide ships and planes. A ship or a plane can  3  a message to the
satellite, which can find out  4  the ship or the plane is. The third kind studies the weather. These satellites  5  
clouds and strong winds moving across the earth. They warn countries to make preparations when very  6  
weather is coming. 
      7  kind is used for communication. Telephone calls  8  countries can be sent by these  satellites. Some can
carry hundreds of calls at the same time. Each call is sent to the satellite, then the  9  sends it to a station in the
country and this country is being phoned. These satellites also carry pictures; they can receive and send about
eight  10  at a time.
( )1. A. physics 
( )2. A. carry   
( )3. A. write   
( )4. A. where   
( )5. A. have    
( )6. A. sunny   
( )7. A. The last
( )8. A. among   
( )9. A. TV      
( )10. A. plays  
B. chemistry
B. find     
B. take     
B. what     
B. watch    
B. cool     
B. Another  
B. along    
B. telegraph
B. programmes
C. biology 
C. keep    
C. send    
C. which   
C. notice  
C. bad     
C. One     
C. between 
C. telephone
C. films   
D. geography 
D. choose    
D. bring     
D. that      
D. see       
D. fine      
D. Any other 
D. of        
D. satellite 
D. languages 
实验题