We know that many animals do not stay in one place. Birds, fish and other animals move from one place to another at a certain time. They move for different reasons:most of them move to find food more easily, but others move to get away from places that are too crowded.

  When cold weather comes, many birds move to warmer places to find food. Some fishes give birth in warm water and move to cold water to feed. The most famous migration(遷移)is probably the migration of one kind of fish, which is called “salmon”. This fish is born in fresh water but it travels many miles to salt water. There it spends its life. When it is cold, it returns to its birthplace in fresh water. Then it gives birth and dies there. In northern Europe, there is a kind of mouse. They leave their mountain homes when they become too crowded. They move down to the low land. Sometimes they move all the way to the seaside, and many of them are killed when they fall into the sea.

  Recently, scientists have studied the migration of a kind of lobster(龍蝦). Every year, when the season of bad weather arrives, the lobsters get into a long line and start to walk across the floor of the ocean. Nobody knows why they do this, and nobody knows where they go.

  So sometimes we know why humans and animals move from one place to another, but at other times we don't. Maybe living things just like to travel.

(1) Most animals move from one place to another at a certain time to _____.

[  ]

A.give birth

B.enjoy warmer weather

C.find food more easily

D.find beautiful places

(2) The fish called “salmon” spends a long life in ______.

[  ]

A.salt water

B.rivers

C.fresh water

D.its birthplace

(3) The mice in northern Europe move when ______.

[  ]

A.they give birth

B.the weather is bad

C.the place gets too crowded

D.they haven't enough food

(4) What is the main idea of the passage?

[  ]

A.Animals move in order to find food more easily.

B.The migration of the fish called “salmon” is the most famous migration.

C.Living things move from one place to another because they like to travel.

D.Sometimes we know why and how living things move from one place to another, but sometimes we don't.

答案:C;A;C;D
解析:

(1)乍一看,四個(gè)選項(xiàng)好像都在文中敘述過,但仔細(xì)一看題干的“most animals”這一關(guān)鍵詞語,便可排除A,B,D項(xiàng).見第一自然段的“They move for different reasonsmost of them move to find food more easily…”

(2)有關(guān)“salmon”的情況在第二自然段中間作了敘述.這種魚出生在淡水后到咸水地區(qū)居住.在那里度過的是一生有大部分時(shí)光,到老了以后又回到它出生之時(shí)的淡水之中.應(yīng)仔細(xì)分析題干中的“spends a long life”和短文中的關(guān)鍵句“There iv spends its life.

(3)從“They leave their mountain homes when they become crowded.”一句可知.

(4)文中第二自然段敘述了“salmon”和北歐的一種老鼠的遷移方向和原因;第三自然段敘述了龍蝦的游動(dòng)情況,但原因不知道.最后一段開頭第一句也正是對(duì)本文主題的綜述.


練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目:高中英語 來源: 題型:054

完形填空

A Joke on a Friend

  Mark twain was a famous American writer.He wrote many famous stories which are still popular in many countries today.Mark Twain was also famous in his day 1 a public speaker.In his speaking Mark Twain always liked 2 funny stories.He also liked to listen to funny stories and to 3 his friends.One day one of his friends 4 his wallet and asked him 5 his train fare for him. 

  “But I don’t have enough money to pay 6 your fare and my fare,”Mark Twain said.

  The friend didn’t know 7 to do.He was very sad. “We can do this.”said Mark Twain.“We can 8 the train and when the conductor comes to take the tickets you can hide 9 my seat.”

  Later, 10 ,on the train,when the conductor came to take the tickets,Mark Twain gave him two tickets 11 for Mark Twain and one for his friend.Then 12 a loud voice,Mark Twain explained.

  “My friend here is a 13 strange man.When he travels on a train he doesn’t like to sit 14 a seat.He prefers 15 on the floor under the seat.”

  Of course,everybody in the train then looked at the poor friend under the seat and laughed at him loudly.

                       
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
   1.                        
                    

[  ]      

  

Aas

     
  

Bf

     
  

Cto

     
  

Dabout

     
   2.                        
                    

[  ]      

  

Ato say

     
  

Bto make

     
  

Cto speak

     
  

Dto tell

     
   3.                        
                    

[  ]      

   Amake a joke about          Bhave a joke with      
  

Cplay jokes on

     
  

Dplay a trick on

     
   4.                        
                    

[  ]      

  

Alost

     
  

Bloss

     
  

Close

     
  

Dlosed

     
   5.                        
                    

[  ]      

  

Ato buy

     
  

Bto cost

     
  

Cto pay

     
  

Dto charge

     
   6.                        
                    

[  ]      

  

Abetween

     
  

Bboth

     
  

Ceither

     
  

Das well as

     
   7.                        
                    

[  ]      

  

Awhere

     
  

Bhow

     
  

Cwhich

     
  

Dwhat

     
   8.                        
                    

[  ]      

  

Aget on

     
  

Bgo on

     
  

Cget in

     
  

Dgo in

     
   9.                        
                    

[  ]      

  

Abehind

     
  

Bunder

     
  

Cbelow

     
  

Dbeside

     
   10.                        
                    

[  ]      

  

Ahowever

     
  

Bwhatever

     
  

Cwhenever

     
  

Dwherever

     
   11.                        
                    

[  ]      

  

Aa

     
  

Bone

     
  

Ca ticket

     
  

Dthe one

     
   12.                        
                    

[  ]      

  

Aat

     
  

Bover

     
  

Cin

     
  

Don

     
   13.                        
                    

[  ]      

  

Amore

     
  

Bmuch

     
  

Cquite

     
  

Dvery

     
   14.                        
                    

[  ]      

  

Aon

     
  

Bonto

     
  

Cat

     
  

Dby

     
   15.                        
                    

[  ]      

  

Ato lay

     
  

Bto lie

     
  

Cto laying

     
  

Dto be lying

     

查看答案和解析>>

科目:高中英語 來源: 題型:054

In the past, man did not have to think about the protection of his environment(環(huán)境). 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   5     to do this, human life on the earth will not survive(幸存).

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 land. 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, we will die.   11   , in most countries, waste products 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(解決) these problems?

If we eat more vegetables and less    16   , there will be more food available(可得到的) 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 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                       B. unlimited      

C. rare                           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. try                           B. continue      

C. decide                         D. have

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. act

10. A. grow                       B. plant      

C. save                          D. cut

11. A. Thus                        B. However

C. Generally speaking                D. Therefore

12. A. still                        B. even      

C. also                           D. certainly

13. A. too many                    B. a few         

C. some                           D. few

14. A. production                    B. pollution

C. population                      D. revolution

15. A. houses                          B. vegetables      

C. food                          D. lives

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. reward

20. A. nature                      B.sea      

C. planet                          D. forest

 

查看答案和解析>>

科目:高中英語 來源: 題型:054

When I come across a good article in reading newspapers, I often want to cut and keep it. But just as I am about to do so I find the article on the  1  side is as much interesting. It may be a discussion of the way to  2  in good health, or  3  about how to behave and conduct oneself in society. If I cut the front article, the opposite one is likely to  4  damage, leaving out half of it or keeping the text  5  the title. Therefore, the scissors(剪刀)would  6  before they start,   7  halfway done when I find out the   8  result.

Sometimes two things are to be done at the same time, both worth your  9  . You can only take up one of them, the other has to wait or be  10  up. But you know the future is unpredictable(不可預(yù)測(cè)的)—the changed situation may not allow you to do what is left  11  . Thus you are   12  in a difficult position and feel sad. How  13  that nice chances and brilliant ideas should gather around all at once? It may happen that your life  14  greatly on your preference of one choice to the other.

In fact that is what  15  is like: we are often  16  with the two opposite sides of the thing which are both desirable like a newspaper cutting. It often occurs that our attention is drawn to one thing only  17  we get into another. The  18  may be more important than the latter and give rise to a divided mind. I  19  remember a philosopher’s remarks: “When one door shuts, another opens in life. ”So a casual(隨意的)  20  may not be a bad one.

1. A. front                              B. same

C. either                           D. opposite

2. A. get                           B. keep

C. lead                            D. bring

3. A. advice                        B. news

C. a theory                         D. a report

4. A. suffer                         B. reduce

C. prevent                          D. cause

5. A. on                            B. for

C. without                          D. off

6. A. use                           B. handle

C. prepare                          D. stay

7. A. or                            B. but

C. so                              D. for

8. A. satisfying                      B. regretful

C. surprising                       D. impossible

9. A. courage                        B. strength

C. attention                         D. patience

10. A. given                        B. held

C. made                           D. picked

11. A. near                          B. alone

C. about                           D. behind

12. A. filled                         B. attracted

C. caught                              D. struck

13. A. dares                        B. comes

C. does                            D. dare

14. A. improves                     B. changes

C. progresses                        D. goes

15. A. study                        B. society

C. nature                          D. life

16. A. faced                        B. supplied

C. connected                        D. fixed

17. A. before                       B. after

C. until                           D. as

18. A. following                      B. next

C. above                           D. former

19. A. still                         B. also

C. once                            D. almost

20. A. treatment                      B. action

C. choice                          D. remark

 

查看答案和解析>>

科目:高中英語 來源:英語教研室 題型:054

In the past, man did not have to think about the protection of his environment(環(huán)境). 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   5     to do this, human life on the earth will not survive(幸存).

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 land. 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, we will die.   11   , in most countries, waste products 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(解決) these problems?

If we eat more vegetables and less    16   , there will be more food available(可得到的) 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 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                       B. unlimited      

C. rare                           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. try                           B. continue      

C. decide                         D. have

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. act

10. A. grow                       B. plant      

C. save                          D. cut

11. A. Thus                        B. However

C. Generally speaking                D. Therefore

12. A. still                        B. even      

C. also                           D. certainly

13. A. too many                    B. a few         

C. some                           D. few

14. A. production                    B. pollution

C. population                      D. revolution

15. A. houses                          B. vegetables      

C. food                          D. lives

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. reward

20. A. nature                      B.sea      

C. planet                          D. forest

 

查看答案和解析>>

科目:高中英語 來源:英語教研室 題型:054

When I come across a good article in reading newspapers, I often want to cut and keep it. But just as I am about to do so I find the article on the  1  side is as much interesting. It may be a discussion of the way to  2  in good health, or  3  about how to behave and conduct oneself in society. If I cut the front article, the opposite one is likely to  4  damage, leaving out half of it or keeping the text  5  the title. Therefore, the scissors(剪刀)would  6  before they start,   7  halfway done when I find out the   8  result.

Sometimes two things are to be done at the same time, both worth your  9  . You can only take up one of them, the other has to wait or be  10  up. But you know the future is unpredictable(不可預(yù)測(cè)的)—the changed situation may not allow you to do what is left  11  . Thus you are   12  in a difficult position and feel sad. How  13  that nice chances and brilliant ideas should gather around all at once? It may happen that your life  14  greatly on your preference of one choice to the other.

In fact that is what  15  is like: we are often  16  with the two opposite sides of the thing which are both desirable like a newspaper cutting. It often occurs that our attention is drawn to one thing only  17  we get into another. The  18  may be more important than the latter and give rise to a divided mind. I  19  remember a philosopher’s remarks: “When one door shuts, another opens in life. ”So a casual(隨意的)  20  may not be a bad one.

1. A. front                              B. same

C. either                           D. opposite

2. A. get                           B. keep

C. lead                            D. bring

3. A. advice                        B. news

C. a theory                         D. a report

4. A. suffer                         B. reduce

C. prevent                          D. cause

5. A. on                            B. for

C. without                          D. off

6. A. use                           B. handle

C. prepare                          D. stay

7. A. or                            B. but

C. so                              D. for

8. A. satisfying                      B. regretful

C. surprising                       D. impossible

9. A. courage                        B. strength

C. attention                         D. patience

10. A. given                        B. held

C. made                           D. picked

11. A. near                          B. alone

C. about                           D. behind

12. A. filled                         B. attracted

C. caught                              D. struck

13. A. dares                        B. comes

C. does                            D. dare

14. A. improves                     B. changes

C. progresses                        D. goes

15. A. study                        B. society

C. nature                          D. life

16. A. faced                        B. supplied

C. connected                        D. fixed

17. A. before                       B. after

C. until                           D. as

18. A. following                      B. next

C. above                           D. former

19. A. still                         B. also

C. once                            D. almost

20. A. treatment                      B. action

C. choice                            D. remark

 

查看答案和解析>>

同步練習(xí)冊(cè)答案