下列历代措施中，起到限制地方割据势力作用的有
①汉武帝颁布“推恩令”
②唐玄宗在边境要地设置军镇
③宋太祖派文臣到各地做知州
④明太祖废丞相设内阁

    Every school has its own rules. How many1are there in your school？ At some schools, the students 2 to wear uniforms on school days. But many students don't like to wear uniforms. They think the uniforms are the ugliest 3 in the world. But the school don't allow students to wear 4 own clothes at school. So some students draw cartoons or some famous singers on their 5. They think it is very6that everyone wears the same. It is very unfair(不公平的） that teachers and students are wearing7. But most of the students 8the rules. What do you think 9 it? Do you 10your school uniforms?