问题补充：
In the 13th century(世纪), the famous Italian traveller, Marco Polo, travelled a long way to China.During his stay in China, he saw many wonderful things. One of the things he discovered was that the Chinese used paper money. In western countries, people did not use paper money until the 15th century. However, people in China began to use paper money in the 7th century(世纪).
A Chinese man called Cai Lun invented(发明) 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（浪费）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(吨) 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 , 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 choose drinks in bottles instead of those in paper packets. We can also use cotton handkerchiefs (手帕) and not paper ones. When we go shopping, we can use fewer paper bags. If the shop assistant gives us a paper bag, we can save it and reuse it later.
Everyone can help to save paper. If we all think carefully, we can help protect(保护) 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 paperB．learned to make paperC．saw many wonderful thingsD．read a lot of books【小题2】People in western countries first used paper money in the century.A．17thB．15thC．13thD．7th【小题3】About tons of paper is thrown away every day in our city.A．1,700B．2,000C．2,800D．48,000【小题4】Which of the following is NOT 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 instead of paper ones.D．To grow more trees.【小题5】Which is the best title of the passage?A．Saving PaperB．The History of PaperC．Cotton Handkerchiefs Back AgainD．Cai Lun, the Great InventorC
答案：
(答案→)C
解析：
试题解析：本文大意：马可.波办是13世界著名的意大利旅行家。他在中国期间，看到许多奇妙的东西，在西方，人们直到15世纪才用纸币，但中国人在七世纪开始用纸币。
一个名叫蔡伦的中国人大约2000年前发明了纸，用木头造纸。如果我们持续浪费纸，地球上不会再有树。没有树，就不会有纸。在我们的城市，人们每天扔掉约2800吨的纸。那么我们如何节约纸张？ 我们能用每张纸的双面，如果店员给我们一个纸袋，我们能省下来，以后再用一次，我也们也可用棉手帕，不用纸巾。
【小题1】细节理解题。根据During his stay in China, he saw many wonderful things.他在中国期间，看到许多奇妙的东西，可知答案选C
【小题2】细节理解题。根据 In western countries, people did not use paper money until the 15th century. 在西方，人们直到15世纪才用纸币，可知答案选B
【小题3】细节理解题。根据 Every day, people throw away about 2,800 tons(吨) of paper in our city. 在我们的城市，人们每天扔掉约2800吨的纸，可知答案选C
【小题4】细节理解题。根据 We can use both sides of every piece of paper, If the shop assistant gives us a paper bag, we can save it and reuse it laterWe can also use cotton handkerchiefs (手帕) and not paper ones.我们能用每张纸的双面，如果店员给我们一个纸袋，我们能省下来，以后再用一次，我也们也可用棉手帕，不用纸巾，可知答案选D
【小题5】标题归纳题。根据So how can we save paper?那么我们如何节约纸张？ 可知答案选A
