问题 单项选择题

夏天高压蒸汽灭菌后的无菌包,保存有效期最长时间不能超过()

A.3天 

B.14天 

C.28天 

D.7天 

E.21天

答案

参考答案:D

完形填空
完形填空。
     If you are human, you can't help but experience times when everything seems to be going wrong. You must also _1_as if your life is completely out of control at times. It is during those "down times" that words of encouragement from family, friends, co-workers or  2_strangers can boost(增强)your spirits. It is also during those _3_that negative words can be devastating (毁灭性的) and sink you deeper and deeper into depression.
     For example, consider this story about a group of _4_who were traveling through the woods when _5_of them fell into a deep pit (坑). All of the other frogs gathered around the _6_.When they saw how _7_the pit was, they told the two _8_frogs they would never get out.
    The two frogs didn't obey what other frogs said and tried to _9_ out of the pit. The other frogs kept telling them not to jump, _10_  it was in vain. Finally, one of the frogs followed what the other frogs were saying and simply _11  . He fell down and _12 . The other frog continued to jump as _13_as he could. Once again the crowd of frogs shouted at him to _14_ the pain. The more they _15_, the harder he jumped and finally he _16_to safety.
     When he  _17  , the other frogs asked him why he continued to jump when they were all _18_ him to simply quit. The frog _19_to them that he was a little bit deaf. He thought they were _20_  him all the time.
( )1. A. think        
( )2. A. so            
( )3. A. processes    
( )4. A. frogs        
( )5. A. two          
( )6. A. hole          
( )7. A. muddy        
( )8. A. uncomfortable
( )9. A. run          
( )10. A. so          
( )11. A. gave out    
( )12. A. died        
( )13. A. fast        
( )14. A. help        
( )15. A. cried        
( )16. A. get it      
( )17. A. turned out  
( )18. A. taking to    
( )19. A. explained    
( )20. A. encouraging  
B. experience
B. just      
B. times      
B. mice      
B. three      
B. pit        
B. wide      
B. unpleasant
B. walk      
B. as long as
B. gave up    
B. wounded    
B. hard      
B. ban        
B. spoke      
B. forget it  
B. kept out  
B. shouting at
B. announced  
B. helping    
C. seem        
C. even        
C. courses    
C. dogs        
C.many        
C. water      
C. deep        
C. unhappy    
C. climb      
C. because    
C. gave away  
C. destroyed  
C. easily      
C. forbid      
C. shouted    
C. use it      
C. got out    
C. throwing at
C. introduced  
C. pulling    
D. feel        
D. ever        
D. practices    
D. cats        
D. few          
D. well        
D. long        
D. unfortunate  
D. jump        
D. although    
D. gave off    
D. damaged      
D. swiftly      
D. stop        
D. read        
D. made it      
D. held out    
D. speaking to  
D. told        
D dragging      
单项选择题