阅读理解。
In the 13th century, the famous Italian traveler, Marco Polo, traveled a long way to China. During his
stay in China, he discovered that the Chinese used paper money. In western countries, people did not use
paper money until the 15th century.
A Chinese man called Cai Lun invented paper almost 2000 years ago. He made it from wood.
Now paper still comes from trees. We use a lot of paper every day. Every day, people throw away
about 280 tons of paper in our city. It takes 17 trees to make one ton of paper. This means that we are
cutting nearly 4800 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 choose drinks in bottles instead of those in paper packets. We also use cotton
handkerchiefs and not 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 reuse it later.
1. Who was Marco Polo? [ ]
A. He was a traveler of Italy.
B. He was an inventor of Italy
C. He discovered how to use paper money
D. He stayed in China
2. People in western countries first used paper money in the ______ century. [ ]
A. 15th
B. 13th
C. 7th
D. 17th
3. How many trees does it take to make one ton of paper? [ ]
A. 10
B. 17
C. 280
D. 4800
4. Which of the following is not the way of saving paper? [ ]
A. To use both sides of every piece of paper.
B. To grow more trees.
C. To use cotton handkerchiefs instead of paper ones.
D. To use the paper bags from shops more than once.
5. Which is the best title of the passage? [ ]
A. Saving Paper
B. Cai Lun, the Great Inventor
C. Handkerchiefs Back Again
D. Story of Paper
N2↑＋4H2O＋Cl2↑＋2O2↑＋Q。下列对此反应的叙述中错误的是 [ ]