题目内容

___ 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
D
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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)

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

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3.Why are the flatfish’s eyes different from other fishes’? (no more than 14 words)

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

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完形填空（共20小题，每小题1分，满分20分）

从A.B.C.D四个选项中，选出可以填入空白处的最佳选项。

    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   31   ．

    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．

    Everyone   36   today that if too many fishes are taken from the sea, there will soon be none left． Yet, with modern fishing   37    , more and more fishes are caught．We know that if too many trees are cut down,   38    will disappear and nothing will grow on the earth．Yet we __39   to use bigger and more powerful machines to    40    more and more trees．

    We realize that if rivers are polluted with waste products from factories, fish will die． 41  , in most countries wastes are   42   put into rivers or into the sea, and there are   43   laws to stop this．

    We know, too, that if the   44   of the world continues to rise at the present rate , in a few years there will not be enough   45   ．What can we do to solve these problems?

    If we eat more vegetables and less   46   ,there will be more food available for everyone．Land that is used to grow crops   47   five times more people than land where animals are kept．

    Our natural resources will    48    longer if we learn to recyclethem．

    The world population will not rise so quickly if people use modern methods of birth  49  ．

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

1.A．beautiful          B．unlimited        C．unusual          D．valuable

2.A．common             B．the same         C．changeable       D．different

3.A．crowded            B．small            C．dirty            D．busy

4.A．protecting         B．saving           C．polluting        D．fighting

5.A．may not            B．will not         C．shall not        D．could not

6.A．wonders            B．realizes         C．considers        D．discovers

7.A．poles              B．boats            C．methods          D．ideas

8.A．mountains          B．the sea          C．trees            D．forests

9.A．continue           B．have             C．ought            D．go on

10.A．grow              B．plant            C．save             D．cut down

11.A．Thus              B．However          C．Generally        D．Therefore

12.A．still             B．even             C．also             D．certainly

13.A．many              B．none             C．some             D．few

14.A．production        B．pollution        C．population       D．development

15.A．houses            B．vegetables       C．food             D．places

16.A．fruit             B．meat             C．fish             D．grain

17.A．feeds             B．increases        C．supplies         D．helps

18.A．use               B．stay             C．keep             D．last

19.A．control           B．born             C．plan             D．pay

20.A．nature            B．sea              C．planet           D．forest

 

 
从下列方框中选适当的词或短语填空，注意其形式变化。
different from, such as, communicate, come up, because of, play an important part in,
believe it or not, make use of, instead of, add
1. Suddenly one of the students stood up, ____ that he was also for my plan.
2. Even if they speak different dialects, they have little difficulty ____ with each other.
3. Many kinds of fishes are fast disappearing ____ serious pollution.
4. I'm afraid something urgent has ____. I won't be able to see you tonight.
5. It's more useful to learn modern languages, ____ English and German, than Latin.
6. There is an atmosphere of peace and calm in the country, quite ____ that of a big city.
7. I can't attend the meeting, so Mr. Green will go ____ me.
8. TVs, radios, and newspapers ____ influencing people's opinions.
9. ____, we were left waiting in the rain for two hours.
10. In order to save resources, they are trying to ____ energy from the sun and wind.

present 

a. John __________his award at a ceremony which recognized the bravery of ten people who had saved the life of another.

b. On Teachers’ Day, our class will ________some flowers to our teachers.

c. The general manager will _________a report _____the Board of Directors(董事会)of the company.              

d. I’ll ______Mr. Wang ________you.         

e. Who will _______the TV show?

f. After finishing your writing, please _______what you wrote _______the class.

g. Many fishes are _______in the river now after it has been dealt with properly.

h. The people ______at the meeting are advanced teachers.
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            
D. forest       

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