I am an English girl. My name is Mary. I’m twelve. My dad and mom are English teachers. I have a brother（哥哥）. His name is Tom and he is thirteen years old. We are in China now. We are in Beijing No. 4 Junior High School. Tom is in Class 4, Grade 7 and I am in Class 9, Grade 7. I have a dog. My dog looks strong. It has a big mouth and two big black ears. We have many(许多) Chinese friends here. They are good.

“尊重每一个人的权利，维护每一个人的尊严，哪怕他（她）有罪有错，这是基本的法治理念，也是文明社会的底线．”对此理解正确的是（     ）

①必须坚持权利与义务相统一的原则               ②任何公民的合法权利都应受到保护

③人格尊严是公民最基本的政治权利               ④必须坚持公民在法律面前人人平等的原则