完形填空。      A group of graduates got together to visit their old university professor.They talked about the    1  topic-happiness.But soon their conversation turned into complaints about   2  in work and life.
To offer his guests coffee, the professor went to the kitchen and   3  with a large pot of coffee and a variety of   4  -plastic,glass, metal, porcelain (陶瓷), som  plain-looking  some  very   5  .The professor told his students to help themselves to hot coffee.
    When all the students had a cup of coffee in   6  . the professor said:"lf you have noticed, all the nice-looking   7  . cups were taken, leaving behind the plain and cheap ones.While it is   8  for you to want only the best for Yourbelves, that is the   9  of your problems and stress.The professor continued," Believe that the cup itself adds no   10  to the coffee.ln most cases it is just more expensive and in some cases it even   11  what we drink.What all of you   12  wanted was coffee, not the cup, but you consciously went   13  the best cups.Now   14  this: life is coffee, the jobs, money,and   15  in society are the cups9 which are just tools to hold and   16  life, and the different typesof cups we have don"t decide, nor    17  the quality oflife.lf we concentrate only on the cups, we will   18  to enjoy the coffee in it.So don"t let the cups   19  you...enjoy the coffee instead."
    At these words, the graduates looked at each other in   20  embarrassment. (     )1. A. hot
(     )2. A. pay
(     )3. A. cooked
(     )4. A. cups
(     )5. A. common
(     )6. A. order
(     )7. A.  pretty
(     )8. A. necessary
(     )9. A. situation
(     )10. A. quality
(     )11. A. makes
(     )12. A. finally
(     )13. A. for
(     )14. A. forget
(     )15. A. position
(     )16. A. create
(     )17. A. damage
(     )18. A. come
(     )19. A. drive
(     )20. A. quiet B. sensitive
B. joy  
B. took
B. gifts
B. special
B. time
B. different
B. normal
B. answer
B. energy
B. gives
B. really
B. with
B. discuss
B. relation
B. support
B. determine
B. stop
B. hold
B. speechless C. famous
C. experience
C. returned
C. plates
C. rare
C. hancl
C. colorful
C. good
C. result
C. weight
C. hides
C. especially
C. off
C. consider
C. workmates
C. contain
C. change
C. have
C. take
C. amazing D. easy          
D. stress        
D. met            
D. drinks        
D. delicate      
D. place          
D.  expensive    
D. possible      
D. source        
D. color          
D. includes      
D.  nearly        
D. to            
D. try            
D.  friends      
D. own            
D. increase      
D. fail          
D. control        
D. reasonable