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问题 单项选择题 A1/A2型题

哪类化合物用Borntrager反应检查（）

A.苯醌

B.萘醌

C.蒽酚

D.羟基蒽醌

E.二蒽酮

答案

参考答案：D

解析：Borntrager反应即碱液呈色反应，羟基蒽醌及其苷类遇碱液呈红色或紫红色。

完形填空
完形填空。
     The difference between life in one country and that in another is quite often __1__ the difference
between city life and village life in __2__ country. In an English village everybody __3__ everybody
else; they know what time you get up, what time you go to bed and what you usually have __4__ 
dinner. If you want any help, you will always get it and be glad to help anyone else in return. In a large
city __5__ London, there are many things and places for people to see and to go to. But people Often
don't know each other __6__. It sometimes happens that you have __7__ seen your next-door
neighbour, or don't know his name or anything about him.
     People living in London are often very __8__, especially (特别是) __9__. Many of them usually
spend evenings, weekends and holidays in the country. If you walk through a street in London on a
Sunday, it is almost like __10__ town.
( )1. A. not so big as    
( )2. A. same              
( )3. A. needs            
( )4. A. at                
( )5. A. like              
( )6. A. good              
( )7. A. ever              
( )8. A. lonely            
( )9. A. before work      
( )10. A. a noisy          		B. so big as  
B. the same    
B. knows      
B. in          
B. as          
B. better      
B. already    
B. alone      
B. at work    
B. a quiet     		C. not big as    
C. different    
C. helps        
C. for          
C. of            
C. best          
C. never        
C. happy        
C. after work    
C. a small       		D. as big as    
D. a different  
D. calls        
D. with        
D. in          
D. well        
D. no          
D. tired        
D. by work      
D. an empty    
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单项选择题

上直肌收缩时,瞳孔转向( )

A．上内

B．下内

C．上外

D． 下外

E．下
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