题目内容

Trees used to be ______ for cooking by the villagers in the 1970s.

A.
cut up
B.
cut down
C.
cut off

B
句意：70年代，村民常常砍伐树木做饭。A项：切碎；B项：把……砍倒 C项：切除；切断。 B项符合题意。
考点：动词词组辨析。

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Trees used to be ________ for cooking by the villagers in the 1970s．

[　　]

A．cut up

B．cut down

C．cut off

In the 13^th century, the famous Indian traveller, Marco Polo, travelled a long way to China. He saw many wonderful things. One of the things he discovered was that Chinese used paper money. In western countries, people did not use paper money until the 15^th century. However, people in China began to use paper money in the 7^th century.
A Chinese man called Cai Lun invented paper almost 2,000 years ago. He made it from wood. He took the wood from trees and made it into paper. He then put these pieces of paper together and made them into a book.
Now paper still comes from trees. We use a lot of paper every day. If we keep on wasting so much paper, there will not be any trees left on the earth. If there are no trees, there will be no paper. Every day, people throw away about 2,800 tons of paper in our city. It takes 17 trees to make one ton of paper. This means that we are cutting nearly 48,000 trees every day. Since it takes more than 10 years for a tree to grow, we must start using less paper now. If we don’t, we will not have enough time to grow more trees to take the place of those we use for paper.
So how can we save paper? We can use both sides of every piece of paper, especially when we are making notes. We can also use cotton handkerchiefs（手帕） and paper ones. When we go shopping, we can use fewer paper bags. If the shop assistant does give us a paper bag, we can save it and refuse (拒绝) it later.
Everyone can help to save paper. If we all think carefully, we can help protect trees. But we should do it now, before it is too late.
【小题1】When he was in China, Marco Polo __________ .

A．discovered Cai Lun invented paper	B．learned to make paper
C．saw many wonderful things	D．read a lot of books

【小题2】 People in western countries first used paper money in the _________ century.

【小题3】 About ________ tons of paper are thrown away every day in our city.

【小题4】 Which of the following is the way of saving paper?

A．To use both sides of every piece of paper.

B．To use the paper bags from shops more than once.

C．To use cotton handkerchiefs and paper ones.

D．All of the above.

【小题5】Which is the best title（题目） of the passage?

A．Saving paper.	B．The history of paper.
C．Cotton handkerchiefs back again.	D．Cai Lun, the great inventor.

Trees used to be ______ for cooking by the villagers in the 1970s.

A. cut up B. cut down C. cut off

Do you know why different animals or insects have their special colors? Colors are used mainly to protect themselves.

Why can’t some birds easily catch locusts（蝗虫）? It is because locusts change their colors together with the change of the colors of crops. When crops are green, locusts look green. But as autumn comes, locusts change to the same brown color as crops have. Some other insects with different colors from plants are easily found and eaten by others. So they have to hide themselves for lives in the day and appear only at night.

If you study the animal life, you’ll find the main use of coloring is to protect themselves. Bears, lions and other animals can’t be easily seen by hunters. This is because they have the colors much like the trees.

Have you ever noticed an even more strange thing? A kind of fish in the sea can send out black liquid when it faces danger. While the liquid spreads over, its enemies can’t find it. And it quickly swims away. So it has lived up to now though it is not strong at all.

1. From the article we learn that locusts 　　　　　　　　　.

A. are dangerous to their enemies B. are easily found by birds

C. change their colors to protect themselves D. are small animals

2.How can insects with different colors from plants keep out of danger?

A. They have to move quietly.

B. They hide themselves in the day and appear at night.

C. They have the colors much like their enemies.

D. They run away quickly.

3. Bears and lions can keep safe because 　　　　　　　　　.

A. they live in forests B. they like brown and grey colors

C. they move quietly　 D. they have the colors similar to the trees

4.What does the word “liquid” mean in the last paragraph?

A. 气体 B. 固体　 C. 液体　 D. 水蒸气

5. Which is the best title for this passage?

A. The Main Use of Colors for Animals and Insects

B. Colors of Different Animals and Insects

C. The Change of Colors for Animals and Insects

D. The Change of Different Animals and Plants

Trees used to be ______ for cooking by the villagers in the 1970s.

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