问题 选择题

将松树和桃树这两种植物相比较,最主要的区别在于:(    )

A.松树的种子外面有果皮包被着

B.松树没有果实,种子裸露着

C.松树的松球果包被着果皮

D.松树的松球果有鳞片

答案

答案:B

题目分析:桃树和松树都结种子,都用种子繁殖后代,属于种子植物,但桃树的种子外有果皮包被着,能形成果实,属于被子植物,松树的种子外无果皮包被着,裸露,不能形成果实,属于裸子植物,选B。

完形填空
完形填空
     It is often said that politeness costs nothing. In fact, __1__hearing the phrase "thank you" or "well
done" means the same to employees as a modest pay__2__, researchers say.
     Praise and encouragement also__3__employees more likely to work hard and stay in their jobs,
saving on the cost of finding__4__.
     A third of 1,000 workers__5__said they did not get  thanked at all when they did well, and a(n)
__6__third said they were not thanked enough.
     In both__7__, the employees said they felt__8__, meaning they were less likely to be__9__to their
jobs and were more likely to look for employment elsewhere.
     According to the survey, praising employees has the same__10__as a 1 percent pay rise, and works
out much__11__for bosses.
     Three out of four employees said that regular__12__by  their bosses was important to them, __13__
only a quarter said they were actually given as much praise__14__they felt they needed. Those doing
manual (体力的) jobs were less likely to be given any __15__for doing well.
     Scottish employees felt__16__undervalued, eight out of ten saying they would like more praise.
However, workers in the northeast are less__17__by being buttered up by the boss, as only 69 percent
said they felt the__18__to be told "well done" regularly.
     The research found that words of praise did more than__19__a pleasant place to work-they could
__20__increase profits.
( )1. A. properly        
( )2. A. rise            
( )3. A. forces          
( )4. A. possibilities  
( )5. A. surveyed        
( )6. A. adequate        
( )7. A. surveys        
( )8. A. privileged      
( )9. A. caught          
( )10. A. motivation    
( )11. A. less convenient
( )12. A. inspection    
( )13. A. but           
( )14. A. that          
( )15. A. solution      
( )16. A. least          
( )17. A. charged        
( )18. A. chance        
( )19. A. create        
( )20. A. alone          
B. consequently  
B. ride        
B. catches    
B. replacements  
B. reported    
B. total      
B. cases      
B. favored    
B. attached    
B. advantage  
B. more likely
B. acknowledgement
B. otherwise  
B. when       
B. situation  
B. the less    
B. impressed  
B. need       
B. demand      
B. still      
C. insistently    
C. surprise      
C. makes          
C. responsibilities
C. employed      
C. special        
C. parts          
C. undervalued    
C. involved       
C. development    
C. cheaper       
C. commitment    
C. thus          
C. while          
C. recognition    
C. the more      
C. delayed        
C. potential      
C. require        
C. even           
D. frequently      
D. incident        
D. contributes    
D. disadvantages  
D. inspired        
D. further        
D. points          
D. evaluated      
D. devoted        
D. feeling        
D. more expensive  
D. outlines        
D. so              
D. as              
D. communication  
D. most            
D. exploded        
D. function        
D. restore        
D. yet            
单项选择题