There are a lot of school rules around the world. For example, in Australia, Canada, Japan

There are a lot of school rules around the world. For example, in Australia, Canada, Japan and the United States, students have to wear uniforms, and they are not allowed to wear earrings.
Some schools in Japan and other countries have rules about hair. For example, students are not allowed to change the color of their hair. In the United States, boys can not have their hair grow long.
For safety at some US schools, students must have a pair of indoor shoes at school every day. This makes sure students won’t fall over on the wet floors and keeps the schools clean.
Gum chewing is not allowed in many US school buildings, as it is difficult to clean up. And if students chew gum in class, they may not pay much attention to their studies.
In most foreign countries, school students are allowed to work part-time. But differently, Japanese school students are not allowed to work part-time or change the color of their hair.
根据短文内容，选择最佳答案。（共5小题，每小题2分，满分10分）
【小题1】Which countries should students not be allowed to wear earrings in ?A．England and Japan.B．Australia and Japan.C．Canada and China D．The USA and France.【小题2】Are students allowed to change the color of their hair in Japan?A．Yes, they aren’t .B．No, they are.C．Yes, they are. D．No, they aren’t【小题3】Why must students have a pair of indoor shoes at school every day at some US schools?A．This makes students exercise more easily. B．This makes students won’t fall over on the wet floors.C．This keeps the schools clean. D．This keeps the schools clean and makes students safe.【小题4】What may happen if students chew gum in class?A．It is difficult to clean up.B．Students will fall over in the classroom.C．Students may not pay much attention to their studies.D．The teachers will be very angry.【小题5】What shouldn’t the students be allowed to do in Japan?A．They aren’t allowed to chew gum.B．They aren’t allowed to wear uniforms.C．They are not allowed to work part-time or change the color of their hair.D．They are not allowed to eat in the classroom.B

(答案→)B 解析：这篇短文主要介绍了世界各地有很多校规。例如,在澳大利亚、加拿大、日本和美国,学生必须穿校服,他们不允许戴耳环。另外提到了头发，嚼口香糖等规定。【小题1】细节理解题。根据短文第一段，in Australia, Canada, Japan and the United States, students have to wear uniforms, and they are not allowed to wear earrings.在澳大利亚、加拿大、日本和美国,学生必须穿校服,他们不允许戴耳环。故选B。【小题2】细节理解题。根据第二段students are not allowed to change the color of their hair.学生不被允许改变头发颜色，故选D。【小题3】细节理解题。根据第三段This makes sure students won’t fall over on the wet floors and keeps the schools clean这确保学生不会摔倒在潮湿的地板上，并保持校园干净，.故选D。【小题4】细节理解题。根据第四段if students chew gum in class, they may not pay much attention to their studies.故选C【小题5】细节理解题。根据第五段可知Japanese school students are not allowed to work part-time or change the color of their hair.描述，日本的学生不被允许兼职或改变头发的颜色，故选C。

就是这个解释