题目内容

  Do you know why different animals or pests(昆虫) have their special colours? Colours in them seem to be used mainly to protect themselves.

  Some birds like eating locusts(蝗虫), but birds cannot easily catch them. Why? It is because locusts change their colours together with the change of the colours of crops, When crops are green, locusts look green. But as the harvest time comes, locusts change to the same brown colour as crops have. Some other pests with different colours from plants are easily found and eaten by others. So they have to hide themselves for lives and appear only at night.

  If you study the animal life, you'll find the main use of colouring is to protect themselves. Bears, lions and other animals move quietly through forests. They cannot be easily seen by hunters(猎人). This is because they have the colours much like the trees.

  Have you ever noticed an even more strange act? A kind of fish in the sea can send out a kind of very black liquid(液体) when it faces danger. While the liquid spreads over(散开), its enemies(敌人) cannot find it. And it immediately swims away. So it has lived up to now though it is not strong at all.

1.From the passage we learn that locusts ________.

[  ]

A.are small animals

B.are easily found by birds

C.are dangerous to their enemies

D.change their colours to protect themselves

2.How can pests with different colours from plants keep out of danger?

[  ]

A.They run away quickly.

B.They have the colours much like their enemies.

C.They hide themselves by day and appear at night.

D.They have to move quietly.

3.Bears and lions can keep safe because ________.

[  ]

A.they have the colours much like the trees

B.they move quietly

C.they like brown and grey colours

D.they live in forests

4.Why can the kind of fish live up to now?

[  ]

A.Because it is very big and strong.

B.Because the liquid it sends out can help it escape from its enemies.

C.Because the liquid it sends out can kill its enemies.

D.Because it swims faster than any other fish.

5.Which is the best title for this passage?

[  ]

A.The Change of Colours for Animals and Pests.

B.Colours of Different Animals and Pests.

C.The Main Use of Colours for Animals and Pests.

D.Some Animals and Pests.

答案:D;C;A;B;C
练习册系列答案
相关题目

(阅读理解)

Elementary School Library Rules

  How many books are students allowed to borrow at once? Kindergarten and Grade One:Children are allowed to borrow one book a week.Grade Two and Up:Students in Grade Two and up are allowed to borrow two books a week.

  How long is the loan? Books are loaned for about a week,however the school is on a 5-day cycle.Books are due on the cycle day.A book borrowed on Day 1 is due on the next Day 1,even if it is not the same day of the week.A book borrowed on Tuesday may be due on a Wednesday,if there is a holiday between when the book is borrowed and when it must be returned.

  May I renew my book? Our computer system does not allow us to renew books,so they must be returned and checked out again.We ask students to return their books at the beginning of the day with their bookmark/library card inside and sticking out.We will check the book in and put it aside for the student to get when he returns with his class.

  How much is the fine if I return a book late? There are no fines for children in grades K-6.However students who have an overdue book may not borrow another book.

If I have the right to borrow two books and I have returned one,may I take out another book?

If the book you have left at home is not yet overdue,you may take out another book.However,if it is overdue,you will not be allowed to take out another book.

What happens if I lose a book?

If you lose a book,we will give you time to look for it.

  Some good places to look for books:

  On your bookshelf,but placed upside down or backwards

  In another basket in the classroom

  Under a bed

  Under a sofa or chair or cushion

  Behind the couch

In your locker or school bag

  If you can't find the book,we will ask you to pay for it.Since it will probably cost more to replace the book than we originally paid,we will charge you the full replacement cost,including tax and other costs.

(1)

Jim is Grade Four,how many books he borrow a week?

A.Only one book.  

B.Two books.  

C.Three books.

D.Four books.

[  ]

(2)

What does the word“due”mean?

A.账单  B.预定的  C.到期的  D.因为

[  ]

(3)

Jim lost a library book and couldn't find it,what could he do?

A.He couldn't borrow any books anymore.

B.He must buy a new book.

C.He must pay for it.        

D.He had to make a copy.

[  ]

(4)

If you return the book late,you will ______ .

A.get a fine

B.pay for it

C.buy a book

D.not be able to borrow another book

[  ]

(5)

Which is right?

  A.The school computer system can allow students to renew books.

  B.Students can keep the books for a week.

  C.If you lose a book,you have to buy a new book.

  D.The book left home is overdue,but I can still borrow two books.

[  ]
  阅读理解

     An old woman opens her window and looks out of it . The weather is fine . A young man is cutting grass in the garden in front    of her house.

     She goes out into the garden and says to the young man:" Why are you cutting grass for me, young man. "The young man says:" Today's    my holiday. You're old and live alone. I want to do something for you."

     "It's so kind of you, my boy. "says the old woman." Come into my house and have a cup of tea."    "O.K.", answers the young man, "but I must finish the work first ." When the old lady goes out into the garden an hour later, the    young man is not there. The garden looks more cleaner than before. She says:" How good the young man is!"

根据短文内容,选择最恰当的答案。

   1. A young man ______in the garden.

     A. is cutting grass      B. opens the window

     C. looks out of the window   D. looks at the old woman

   2. The old woman ______ and says to the young man.

     A. cuts grass         B. looks out

     C. goes out into the garden  D. opens the window

   3. The young man wants to cut grass for the old lady, because she ______.

     A. wants him to help     B. is old and live alone

     C. wants to do something   D. wants to cut grass

   4. The old woman wants the young man to ______.

     A. finish the work first   B. do something for her

     C. cut the grass quickly   D. have a cup of tea in       her home

   5. An hour later the young man _______.

     A. goes away        B. is there

     C. is cutting grass    D. goes out into the garden

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网