- 11
- 
									42._________ 
- A. The Desert Problem
- B. People Make Deserts
- C. Green Plants and Grass
- D. The Desert,the Tree and the Water
- A. The land never stops becoming deserts.
- B. Scientists ask the people to live in the deserts and grow food there.
- C. People do bad things to the earth.
- D. Scientists may not be able to change the deserts.
- A. Because they can hold the water.
- B. Because they can stop the wind from blowing the earth away.
- C. Because they can keep the earth wet.
- D.All the above.
- A. science          
- B. history            
- C. travel            
- D. maths
- A. Because some places don't get very much rain.
- B. Because plants don-t let the hot sun make the earth even drier.
- C. Because people don't keep the earth well.
- D. Because scientists haven-t learnt enough about the deserts.
- A. carry water'   
- B.grow food
- C. do nothing   
- D. study a lot
- A. there isn't enough sunlight         
- B. there is too much water
- C. it is too crowded there                    
- D. it has little food for plants
- A. easy                   
- B. difficult               
- C. impossible         
- D. important
- A.缝隙   
- B.表面
- C.夹层   
- D.底部
- Another thing plants must have before they can grow is food.    Whar will happen if we try to make things grow on the sandy beach? A few plants,such as beach grass,will grow in sand,L ut most plants won-t. Even if the weather is warm e
- A. two              
- B. three              
- C. four           
- D. five
- 32
- 
									( )19. 
- A.work    
- B.study hard   
- C.do sports   
- D.have holidays
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- 
									( )18. 
- A.were born   
- B.travel      
- C.visit      
- D.live
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- 
									( )20. 
- A.develop   
- B.produce    
- C.build     
- D.grow
- 35
- 
									( )16. 
- A.wish     
- B.hate       
- C.prefer     
- D.mind
- 36
- 
									( )17. 
- A.follow    
- B.miss      
- C.change    
- D.goon to
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- 
									( )15. 
- A.take     
- B.spend      
- C.receive    
- D.cost
- 38
- 
									( )13. 
- A.Several        
- B.Most            
- C.A few         
- D.Few
- 39
- 
									( )14. 
- A. worry about      
- B. pay for                  
- C. ask for               
- D. make sure
- 40
- 
									( )12. 
- A.leave     
- B.begin      
- C.say      
- D.pass 
- A.and      
- B.though      
- C.until      
- D.since
- A. put off            
- B. put down           
- C.is put olf           
- D.is put down
- A. will be                
- B. were                    
- C. are                      
- D. have been
- A. take after            
- B. similar to            
- C. the same as         
- D. am after
- A. Not only ;and      '                    
- B. Not only ;but also
- C.Not ;butalso         
- D.Both;but
- A. to talk ;reading                                       &n
- B. to talk; to read
- C. talking; reading  .                                   
- D. talking; to read
- A.With      
- B.Be        
- C.Being      
- D.For
- A. give off               
- B. give out               
- C. giving off            
- D. giving out
- A. from                  
- B. since                  
- C. to                 
- D. for
- A. the ill'              
- B. the sick              
- C. illness                
- D. sick
- A.come up          
- B.come out          
- C.come up with     
- D.come over
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