采用下列何种措施可避免细菌产生耐药性（） A.合理使用抗菌药物 B.联合用药 C.轮

          One day a very rich family in Guangzhou went on a trip to the
countryside. The father wanted to show his son how   1 people lived,so
they spent a day and a night 2 the farm of a very poor family. When they
got back froru   their      3,   the   father asked his son, “ My dear son, how
was the trip?”      
       “Very good , Dad !”      
       “Did you see how poor people lived?”the father asked.      
         “Yeah!”
       “And   4   did you learn?”       
         The son answered, “We have a dog at home, and they have four. We
have a pool that reaches to the middle of the garden and they have a creek
that has   no     end. We have very expensive  5   in the garden and they have
the stars. Our patio reaches to the front yard,yet they have the whole
horizon. "     
           6   the little boy finished,his father was speechless.      
         His son added,"Thank you for   7  me how poor we are ! "  
         8  it true that it all depends on the way you look at things? Attitude
is   9   !It's very   10   to make a decision to have a good and positive
attitude every day !

( )1. A.many        
( )2. A. in          
(     )3. A. trip        
(     )4. A. who        
(     )5. A. flowers    
(     ) 6. A. When        
(     ) 7. A. show        
(     ) 8. A. Isn't      
(     ) 9. A.everything  
(     ) 10.A.important  

B. much         
B. on           
B. countryside  
B. how          
B. lamps        
B. While        
B. showed       
B. Don't        
B. nothing      
B. impossible   

C. rich            
C. over              
C. Guangzhou         
C. what              
C. tables           
C. Before          
C. showing           
C. Won't             
C. something        
C. interesting     

D. poor             
D. around           
D. poor family      
D. which          
D. plants            
D. As soon as       
D. to show        
D. Shan't            
D. anything         
D. satisfied