In the 13th century,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 di

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In the 13th century,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 di
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In the 13th century,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 di
In the 13th century,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．
A Chinese man called Cai Lun invented paper almost 2000years ago．He made it from wood．He took the wood from the tree 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 kept 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 2,800tons（吨）of paper in our city．It takes 17 trees to make one ton of paper．This means that we are cutting nearly 48,000trees every day．
Since it takes more than 10years 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

In the 13th century,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 di
什么问题

in the 16th century什么意思 in the 20th century是什么意思 Europe in the 18th century是什么意思 Realistic novel in the 18th century in 18th century 要不要加the变成in the 18th century 英译中 in the 1950s in the 19th century in the 13th century,the famous indian travellar,marco polo求这篇阅读的答案啊, in the second half of the 19th century a leading figure in the 20th century theater. meaning in the early part of the 19th century 和 at the beginning of the 19th century 的区别. He was a fomous artist in _____. A the 19th Century B the 19 Century C 19 Century 初中英语in the 18th and 19th centuryin the 18th and 19th century（century要变为复数centuries吗?为什么?） In the 13th century ,the famous Italian traveler,Marco Polo一这句话开头的文章答案是什么, life in the 21st century will be different from life in the 20th century是什么意思 The camera was the one of the gerat v_____ in the 19th century the story takes place at the turn of the 19th century in the rural English The camera was the one of the gerat v_____ in the 19th century in use 含义在Paper money was in China when Marco Polo visited the country in the 13th century.中in use的含义.