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___ fishes are usually more expensive than ___ ones, because it's not easy to keep them ____.  
[     ]
A. Alive; frozen; live  
B. Living; freezing; live  
C. Live; freezing; living
D. Live; frozen; alive
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科目:高中英语 来源:2015届湖南省高一4月段考英语试卷(解析版) 题型:其他题

Like all vertebrates(脊椎动物), fish have sense organs that tell them what is happening within their environment. The organs enable them to see, hear, smell, taste and touch.

A fish’s eyes differ from those of land vertebrates in several ways. For example, most fish can see to the right and to the left at the same time for the fact that a fish has no neck and so cannot turn its head. Fish also have no eyelids. For land vertebrates, eyelids(眼睑)help moisten(使湿润) their eyes and protect them from sunlight. A fish’s eyes are kept moist by the flow of water over them. They do not need to be shielded from sunlight because it is seldom extremely direct and bright underwater. Some fish have unusual adaptations of the eye. For example, a flatfish has two eyes on the same side of the head. A flatfish spends most of the time lying on its side on the ocean floor and so needs eyes only on the side that faces upward. The eyes of certain deep-sea fish are at the ends of short structures that stick out from the head. These structures can be raised upward, allowing the fish to see overhead as well as to the side and to the front.

A few kinds of fishes are born blind. They include certain species of catfish that live in total darkness in the waters of caves. Some of these fishes have eyes but no vision(视觉). Others lack eyes completely.

1.Why can’t a fish turn its head? (no more than 6 words)

_____________________________________________________________________

2.What can prevent land vertebrates’ eyes from sunlight? (no more than 3 words)

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4.What is the passage mainly about? (no more than 6 words)

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科目:高中英语 来源:20101011学年安徽省高一下学期期中考试英语试题 题型:单项填空

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从A.B.C.D四个选项中,选出可以填入空白处的最佳选项。

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    Today things are   32   , the world has become too   33   .We are using up our natural resources too quickly and at the same time we are   34   our environment with dangerous chemicals.If we continue to do this, human life on the earth   35   survive.

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    Finally, if we educate people to think about the problems, we shall have a better and cleaner   50    in the future

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从下列方框中选适当的词或短语填空,注意其形式变化。
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present 

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完形填空。
    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 (化学制品). 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 available (可用的) 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 (循环再用) 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. beautiful  
(     )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. still     
(     )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. realizes   
B. boats     
B. the sea   
B. have       
B. plant     
B. However   
B. even       
B. none       
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. go on          
D. cut down       
D. Therefore      
D. certainly      
D. few            
D. development                   
D. places         
D. grain          
D. helps          
D. last           
D. pay            
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