课本应该被循环再用吗？(Textbooks Should Be Recycled?)

Now, many primary schools and middle schools are recycling textbooks. In my opinion, it’s necessary.

　　As you know, save paper means save trees and money. Trees also have many advantages, like: to produce oxygen, control the climate. Some trees can produce rubber or medicine etc. Trees are a kind of natural resources. We must protect them.

　　To print books. We must use a lot of time and people. We have to use electricity and water. In China water is ‘rare’. So we must save it! Save water is everybody’s responsibility.

　　In a word. I agree with recycle textbooks and I hope we can do this forever!

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