作文训练Part 11. 目前有些中小学开始循环使用课本，好处是.；2. 也可能产生一些问题；3. 我对此的看法。Reuse of Textbooks in SchoolsSome primary and middle schools start the reuse of textbooks now. With the reuse of textbooks, a considerable amount of paper and trees will be saved. At the same time, the pollutant produced in paper-making will be reduced. Families and governments will also benefit as it brings down expenditure on school textbooks.Just as every coin has two sides, some problems may also come up in the reuse o
