是否赞成毕业班学生把课本留给下一届同学循环使用
作为高三学生，你班同学在讨论“毕业班学生可否把课本留给下一届同学循环使用”时提出了不同的看法。请根据下表所给的提示写一篇英语短文，并谈谈你的观点。
不同意见 一些同学赞成 另一些同学反对 理 由 1. 可节省资源，节约开支 2. 一些西方国家经常这样做 1. 教材内容经常更新 2. 很多同学在书上作了笔记
要求：
1．词数150左右，
2．可根据内容要点适当增加细节，使行文连贯，
3．参考词汇：循环使用recycle（vt. ） 开支expense（n.）
One possible version:
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.
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.
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