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In the 13th century, the famous Italian traveler, Marco Polo, traveled a long way to China.(1)D_____ his stay in China, he saw many wonderful things.(2)O______ of the things he discovered was that the Chinese used paper money.In western (3)c______, people did not use paper money until the 15th century.A Chinese man called Cai Lun(4)i_______ paper almost 2, 000 years ago.He made it from wood.He then put these pieces of paper(5)t________ and made them into a book.
Now paper still comes from trees.If there are no trees, there will be no paper.Every day, people throw away about 2, 800 (6)t______ of paper in our city.This means that we are cutting nearly 48, 000 trees every day.Since it takes more (7) t______ 10 years for a tree to grow, we must start using less paper now.If we don’t, we will not have (8)e ______ time to grow more trees.
So how can we save paper? We can use (9)b_____ sides of every piece of paper. We can (10)c ______ drinks in bottles instead of those in paper packets.We can also use cotton handkerchiefs and not paper ones.Everyone can help to save paper.
1. others 2. favorite 3. own 4. when 5. every
6. who 7. made 8. reason 9. in 10. stories