听力原文：

M: Here are some rules for the library.

(1) You can't eat anything in the library. 

(2) Be quiet when you are reading. 

(3) You can borrow four books every time. 

(4) You should return books on time. 

(5) You should leave the library before 6:00 p.m. 

Question: How should every student do in the library?

参考答案：

They should follow the library rules.