In the 13th century, Marco Polo traveled a long way to China. He was a famous Italian ¡¡1 . During his stay in China, he saw many wonderful things. One of the things he ¡¡2 ¡¡was that the Chinese used paper money. People in ¡¡3 ¡¡countries didn¡¯t use paper money until the 17th century. However, people in China began to use paper money in the 10th century.

¡¡4 ¡¡was invented by a Chinese called Cai Lun about 2,000 years ago. He made paper with bark, ropes, rags and so on. Now paper mainly comes from trees. We use it every day. ¡¡5 ¡¡we waste a lot of it. If we keep on doing so, people ¡¡6 ¡¡cut down many more trees. Then there won¡¯t be any trees left. If there are no ¡¡7 , there will be no paper.

So how can we ¡¡8 ¡¡paper? When we take notes, we can use ¡¡9 ¡¡sides of each piece of paper. We can also use cotton handkerchiefs (ÊÖÅÁ), not the paper ones. If the salesman gives us a paper bag, we can keep it and ¡¡10 ¡¡it later.

We can help to protect trees now before it¡¯s too late.

(¡¡ ) 1. A. traveler¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. actor¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. doctor¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. driver

(¡¡ ) 2. A. disliked¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. disagreed¡¡¡¡¡¡¡¡¡¡ C. invented¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. discovered

(¡¡ ) 3. A. Eastern¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. Western¡¡¡¡¡¡¡¡¡¡¡¡ C. Southern¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. Northern

(¡¡ ) 4. A. The gunpowder¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. The paper-making¡¡¡¡¡¡¡¡¡¡

C. The printing¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡¡¡ D. The compass

(¡¡ ) 5. A. Sometime¡¡¡¡¡¡¡¡¡¡ B. Some time¡¡¡¡¡¡¡¡ C. Sometimes¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. Some times

(¡¡ ) 6. A. have to¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. mustn¡¯t¡¡¡¡¡¡¡¡¡¡¡¡ C. used to¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. shouldn¡¯t

(¡¡ ) 7. A. books¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. trees¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. leaves¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. factories

(¡¡ ) 8. A. make¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. use¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. save¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. buy

(¡¡ ) 9. A. all¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. each¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. every¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. both

(¡¡ ) 10. A. repair¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. record¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. reuse¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. return

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