The forest guards often find campfires that have not been completely. A. burned B. put out C. put away D. turned over 【查看更多】

 

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If you go into the forest with friends， stay with them. If you don‘t， you may get lost. If you get lost， this is what you should do. Sit down and stay where you are. Don’t try to find your friends—let them find you. You can help them find you by staying in one place. There is another way to help your friends or other people to find you. You can shout or whistle three times. Stop. Then shout or whistle three times again. Any signal given three times is a call for help. Keep up shouting or whistling. Always three times together. When people hear you， they will know that you are not just making a noise for fun. They will let you know that they have heard your signal. They will give you two shouts or two whistles. When a signal is given twice， it is an answer to a call for help. If you don‘t think that you will get help before night comes， try to make a little house with branches. Make yourself a bed with leaves and grass. When you need some water， you have to leave your little branch house to look for it. Don’t just walk away. Pick off small branches and drop them as you walk in order to go backagain easily. When you are lost， the most important thing to do is to stay in one place.

　 1.Which signal is a call for help？

　 A.shouting here and there　　　　　　 　　 B.crying twice

　 C.shouting or whistling three times together 　D. whistling every where in the forest

　 2.When you hear two shouts or two whistles，you know that ____________________.

　 A. someone is afraid of an animal　　　　 　B. people will come to help you

　 C. someone needs help　　　　　　　　 　　D. something terrible will happen

　 3..What‘s the meaning of the underlined sentence？

　 A. Leave branches to find your way back　　　 B. Pick off branches to build another house

　 C. Use branches to make a bed　　　　　　　 D. Drop branches to look for water

4.The main idea of the passage is________________________.

　 A. how to travel in the fores　　

B. how to spend the night in the forest

C. what you should do if you want to get some water

D. what you should do if you are lost in the forest

 

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     In the past, man did not have to think about the protection of his environment. There were few
people on the earth, and natural resources seemed to be   1   .
     Today things are   2   , the world has become too   3   . We are using up our natural resources
too quickly and at the same time we are   4   our environment with dangerous chemicals．If we
continue to do this, human life on the earth   5   survive.
     Everyone  6  today that if too many fishes are taken from the sea, there will soon be none left.
Yet, with modern fishing   7   , more and more fishes are caught. We know that if too many trees are
cut down,   8   will disappear and nothing will grow on the earth. Yet we _9_ to use bigger and more
powerful machines to    10   more and more trees.
     We realize that if rivers are polluted with waste products from factories, fish will die. 11  , in most
countries wastes are   12   put into rivers or into the sea, and there are   13  laws to stop this.
     We know, too, that if the   14   of the world continues to rise at the present rate , in a few years
there will not be enough   15   .What can we do to solve these problems?
     If we eat more vegetables and less   16 ,there will be more food for everyone. Land that is used to
grow crops   17  five times more people than land where animals are kept. Our natural resources will 
   18   longer if we learn to recycle them. The world population will not rise so quickly if people use
modern methods of birth  19  . Finally, if we educate people to think about the problems, we shall have a better and cleaner   20   in the future.
(     )1. A. beaut iful
(     )2. A. common    
(     )3. A. crowded    
(     )4. A. protecting 
(     )5. A. may not    
(     )6. A. wonders    
(     )7. A. poles      
(     )8. A. mountains 
(     )9. A. continue 
(     )10. A. grow      
(     )11. A. Thus      
(     )12. A. s till    
(     )13. A. many      
(     )14. A. production
(     )15. A. houses    
(     )16. A. fruit    
(     )17. A. feeds    
(     )18. A. use      
(     )19. A. control 
(     )20. A. nature     		B. unlimited   
B. the same    
B. small        
B. saving       
B. will not    
B. ealizes    
B. boats        
B. the sea      
B. have        
B. pick up      
B. however      
B. even        
B. no          
B. pollution    
B. vegetables 
B. meat        
B. increases    
B. stay        
B. born        
B. sea           		C. unusual  
C. changeable
C. dirty     
C. polluting 
C. shall not 
C. considers 
C. methods   
C. trees     
C. ought     
C. save     
C. Generally 
C. also      
C. some      
C. population
C. food     
C. fish     
C. supplies  
C. keep     
C. plan     
C. planet    		D. valuable   
D. different  
D. busy         
D. fighting     
D. could not    
D. discovers    
D. ideas        
D. forests      
D. decide       
D. cut down     
D. Therefore    
D. never        
D. few        
D. development  
D. places       
D. grain      
D. helps        
D. last         
D. pay          
D. fores      

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