问题 选择题

酯化反应属于 (      )

A.中和反应

B.不可逆反应

C.离子反应

D.取代反应

答案

D 

酯化反应的类型属于取代反应,酯化反应是可逆的

完形填空
完形填空
     Back in 2007,I rented a room in Johor Bahru,Malaysia while studying for my Masters programme in
Singapore.I travelled daily by  1   across the JohorSingapore Causeway for my   2  ,which were usually
in the evening.It was quite_3 by the time I got back to the bus station in Johor Bahru,and I would still
need to take another bus home.
     One night, I   4   the last bus and didn't have enough money to take a taxi.With no other choice, I
decided to   5   the twokilometre journey home,which would have been fine  6    I were not so tired that
day.It also didn't  7   that the route was pretty rough  (凹凸不平的)  and dark.But I walked forward
with   8  ,with the promise of a night's rest   9   me on.After walking for a few minutes,a car  10   in front
of me.The driver,who looked  11  , asked where I was headed."Not many people walk  through here,"
he said,and  12   me a ride.He really  13    me up as he  went out of his way to get me to my apartment.
     What was more  14  , however,was the story behind it.During the ride,the driver told me that when
he saw me  walking,it made him think of his   15  who used to walk to work by the  16   road and though he often saw his uncle on the way,he had  17   offered a ride as he was headed in a different direction.
  18   his uncle passed away because of an illness,and until today he still feels   19   for not being kinder
to his uncle.So when he   20   me walking that night,he just had to stop and help.
( )1. A.bus          
( )2. A.job          
( )3. A.early        
( )4. A.caught        
( )5. A.drive        
( )6. A.if            
( )7. A.suggest      
( )8. A.pleasure      
( )9. A.pushing      
( )10. A.pulled      
( )11. A.concerned    
( )12. A.had          
( )13. A.cheered      
( )14. A.worse        
( )15. A.grandfather  
( )16. A.busy        
( )17. A.sometimes    
( )18. A.Sadly        
( )19. A.puzzled      
( )20. A.knew        
B. bike            
B. classes        
B. late            
B. took            
B. enjoy          
B. though          
B. help            
B. hunger          
B. turning        
B. stopped        
B. disappointed    
B. asked          
B. brought        
B. interesting    
B. uncle          
B. new            
B. always          
B. Exactly        
B. lucky          
B. saw            
C. car        
C. tasks      
C. cold      
C. missed    
C. run        
C. because    
C. say        
C. fear      
C. holding    
C. broke      
C. excited    
C. offered    
C. gave      
C. upset      
C. father    
C. main      
C. often      
C. Gradually  
C. guilty    
C. recognized
D. train        
D. home        
D. hot          
D. left        
D. walk        
D. unless      
D. mean        
D. difficulty  
D. putting      
D. went        
D. worried      
D. got          
D. picked      
D. meaningful  
D. mother      
D. same        
D. never        
D. Actually    
D. grateful    
D. followed    
单项选择题