There are lots of rules at David's school.She agrees with some of them. For example, they can’t arrive happy , they can’t run in the hallways, and they can’t eat in class. All that rules are okay because they’re reasonable(合情合理的).But there are some rules Selina doesn’t agree with. For example, at her school they have to wear a uniform and they can’t wear jeans. But she thinks jeans are good because they’re comfortable. In school, they can’t listen to music in art class. Selina doesn’t agree with this rule. She thinks listen to music in art crass is okay.Selina also has to follow some rules at home. For example, if she wants towatch TV, she has to finish her homework first. And she can’t go out with her friends on school nights, that is, from Monday to Friday, she also has to clean her room every week. Luckily, she doesn’t have to take out the trash(垃圾). She hates it.