四：课本循环使用
As high school graduates, our class have had a discussion about whether we should recycle the textbooks.
Some students aGREe to this suggestion. They point out that recycling textbooks can save a lot of natural resources used to make textbooks and save lots of expense. Besides, they mention that recycling textbooks is very common in some western countries.
But other students express their opposite ideas. They emphasize that the contents of the textbooks are often renewed. What's more, various kinds of notes have been made in their textbooks.www.cooyu.net
In my opinion, it is a wonderful idea because it will not only save much money but also do a lot of good to both the government and students' families.
