________.

　　A．tell anything that you find entertaining

　　B．learn to respect the local customs

　　C．know how to overcome cultural differences

　　D．try to tell anything particularly funny

　　解析：选B　细节理解题。根据文章最后一段中的"Be careful not to sacrifice (牺牲) respect for local culture in order to lighten things up for yourself and fellow travellers."可知，要尊重当地的传统文化。故选B。

　　3．We can infer that ________.

　　A．the funny things will be always interesting and never change

　　B．the funny things would always make people happy

　　C．if the people didn't experience the things, they would find them funny

　　D．the things seemed strange before they are surely becoming the familiar things

　　解析：选C　推理判断题。根据文章第二段最后一句中"... you'll be surprised how funny things can look when told to someone outside the situation."可知，没有经历过那些事情的人会发现它们很有趣。故选C。

　　4．The text is intended for ________.

　　A．the performers who act in the music hall

　　B．the actors who often act in the theatre

　　C．the travellers who are experienced

　　D．the travellers who want to be humorous

　　解析：选D　推理判断题。文章就是为那些要旅游而且希望变得幽默的人写的。故选D。

　　B

　　This year some twenty­three hundred teenagers (young people aged from 13～19) from all over the world will spend about ten months in US homes. They will attend US schools, meet US teenagers, and form impressions of the real America.

　　 At the same time, about thirteen hundred American teenagers will go to other countries to learn new languages and gain a new understanding of the rest of the world.

　　Here is a two­way student exchange in action. Fred, nineteen, spent last year in Germany with George's family. In turn, George's son Mike spent a year in Fred's home in America.

Fred, a lively young man, knew little German when he arrived, but after two months' study the language began to come to him. School was completely different from what he had expected - much harder. Students rose respectfully when the teacher entered the room.