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.

A．17th

B．15th

C．13th

D．7th

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

A．1,700

B．2,000

C．2,800

D．48,000

【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 are useful to man in three very important ways. The first important way is that they provide man with food, wood and other products. Trees provide not only man with food, but also many animals with food. Without trees many animals could not live on the earth. It’s not easy for man to live on the earth, either.
The second important way is that trees give us shade. On a hot summer day, people are eager(渴望)to have a rest under the shade of a tree after they have walked a long way. You can imagine how important the shade of a tree is to man and to animals.
The third important way is that trees help to prevent drought and foods. However, in many parts of the world, man has not realized the third important way. He has cut trees down in large numbers. In the end he finds that he has lost the best friends he had.

The Importance of Trees

The First Important Way: 【小题1】____________________ _________________________

The Second Important Way: To give man shade

The Third Important Way: 【小题2】______________________ _________________________

Without trees it’s difficult for man and many animals to live on the earth.

On a hot summer, people 【小题3】________________ _______________________ are eager to have a rest under the shade.

Man has not realized this. Because of 【小题4】____________ __________________________ He finds that he has lost the best friends he had

 

In the 13th century, Marco Polo travelled a long way to China. He was a famous Italian 31 During his stay in China, he saw many wonderful things. One of the things he 32 was that the Chinese used paper money. People in 33 coun­tries didn't use paper money until the 17th century. However,people in China began to use paper money in the 10th century. 34     was invented by a Chinese about 2 000 years ago. His name was Cai Lun. He then 35 these pieces of paper together and made them into a 36 .
Now paper mainly comes from trees. We use it every day. 37 we waste a lot of it. If we keep on doing so, people 38 cut down many more trees. Then there will not be any trees left. If there are no 39 , there will be no paper.
So how can we 40 paper? When we mak­ing notes,we can use 41 sides of each piece of paper. We  can  buy  drinks  in bottles instead of 42  in paper packets. We can also use cotton handkerchiefs ( 棉手帕) and not the paper ones.
43  we go shopping, we can use fewer paper bags. If the salesman gives us a paper bag, we can keep it and 44  it later. We can help to protect trees if we think 45 . We should to it now,before it is too late.

【小题1】

A．traveller B．actor C．doctor D．driver

【小题2】

A．disliked B．disagreed C．invented D．discovered

【小题3】

A．Eastern B．Western C．Southern D．Northern

【小题4】

A．Iron B．Paper C．Television D．Silk

【小题5】

A．collected B．divided C．moved D．put

【小题6】

A．magazine B．newspaper C．book D．dictionary

【小题7】

A．Sometime B．Some time C．Sometimes D．Some times

【小题8】

A．have to B．mustn't C．used to D．shouldn't

【小题9】 A. books         B. trees          C, leaves        D. factories

【小题10】

A．make B．use C．save D．buy

【小题11】

A．all B．each C．every D．both

【小题12】

A．them B．those C．these D．ones

【小题13】

A．Before B．After C．As soon as D．When

【小题14】

A．repair B．record C．reuse D．return

【小题15】

A．carefully B．badly C．quickly D．freely

In the past, man did not have to think about the protection of his environment. There were not many people on earth, and natural resources seemed to be unlimited.
Today, things are different. The world has become too crowded. We are using up our natural resources too quickly, and at the same time we are polluting our environment with dangerous chemicals. If we continue like this, human life on earth will not survive.
Everyone realizes today that if too many fish are taken from the sea, there will soon be none left. Yet, with modern fishing methods, more and more fish are caught. We know that if too many trees are cut down, forests will disappear and nothing will grow on the land. Yet, we continue to use bigger and more powerful machines to cut down more and more trees.
We realize that if rivers are polluted with waste products from factories, we will die. However, in most countries waste products are still put into rivers or into the sea, and there are few laws to stop this.
We know, too, that if the population of the world continues to rise at the present rate, in a few years, there will not be enough food.
What can we do to solve these problems?
If we eat more vegetables and less meat, we will easily get more food. Land that is used to grow crops can feed five times more people than land where animals are kept.
The world population will not rise so quickly if people use modern methods of birth control.
Finally, if we educate people to think about the problems, we shall have a better and cleaner living place in the future.

The importance of protecting the environment
Problems	◆ More fish being caught. ◆ More 【小题1】    being cut down. ◆ More waste products being put into rivers. ◆ More【小题2】    being born.
Causes	◆ The world is becoming too 【小题3】    . ◆ Modern methods make the situation worse .
Result	We human beings will not survive on the earth.
Solutions	◆ Eat more vegetables and less meat so that more food will be available  for everyone. ◆ Use modern methods of 【小题4】    control so that the population will not grow too fast. ◆ Educate people so that the 【小题5】   will be better and cleaner.

      

In order to make Chongqing more beautiful, lots of trees _____ on both sides of the street.

A．should build

B．have built

C．must be built

D．will build