1. Students usually spend more money on books, so it is unacceptable to buy brand-new books. Therefore, it is more appropriate to collect old books.

2. The books students have are textbooks, CET-4, tutorials, literature books, postgraduate entrance examination books and reference books. Every year when the graduation season comes, most students are worried about a large number of books, textbooks and clothes left over from four years. These things are inconvenient to take away and it is a pity to throw them away, so the collection of old books should be respected.