阅读下面短文，根据短文内容回答问题。

Before you go to another country, it is a great help if you know the language and some of the customs of the country.

When people meet each other for the first time in Britain, they say “Hello!” or “Nice to meet you.” and shake hands. Usually they do not shake hands when they just meet or say goodbye. But they shake hands after they haven’t met for a long time or when they will be away from each other for a long time.

Last year a group of German students went to England for a holiday. Their teacher told them that the English people hardly shake hands. So when they met their English friends at the station, they kept their hands behind their backs. The English students had learned that the Germans shake hands as often as possible, so they put their hands in front and got ready to shake hands with them. 这个行为使得大家都笑了。

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Have you ever wondered what PE classes are like in other countries? In China, PE tests are required to graduate from both middle school and high school. To get good grades on the PE tests, Chinese students will need to practice running as well as doing sit-ups and pull-ups(引体向上). However, the way that PE classes work in US high schools is different.

In my high school, we are required to take two terms of PE to graduate. We play real sports during PE classes, such as basketball and volleyball. There are also some typical American sports that we often play, such as kickball and dodgeball.

I didn’t know the rules of kickball and dodgeball when I first came to the US. The teacher allowed me to sit on the sidelines and watch how other students played them in order to let me find out the rules.

We can learn some useful life skills in PE classes as well. Last year, I learned how to do CPR(心肺复苏), which is a life-saving skill. We were also taught how to provide first aid(帮助) to someone who is badly hurt. These skills are a large part of the final grade for the PE class in my high school. Self-defense(自卫) is also taught in PE class. This includes some taekwondo(跆拳道) and karate(空手道) skills, as well as Chinese Kung fu. It is practical.

I prefer PE classes in the US to the ones in China. I think they are more fun and useful. What do you think?