上海中高级口译考试分为笔试和口试，在笔试考试通过后会颁发笔试证书，通过一次笔试可以获得四次口试的机会。中高级口译的笔试和口试虽然是分开进行的，但其笔试的证书在社会上却有很高的认可度。　
　　Q19-22
　　W:Good evening, Mr. Smith. It’s nice to meet you and your boy in such nice and cozy weather. Is John going to school this year?
　　M: Yes, we are thinking of sending him to a private boarding school instead of the local state school.
　　W: Really? I wouldn’t dream of sending my little boy away to some strange institution for months on end every year. It will break my heart every time.
　　M: I don’t think so. I would say that a boarding school education is good for children because it teaches them to have confidence in themselves. In a boarding school they can learn to be more independent of themselves and less dependent on their parents.
　　W:But not every child can afford to go to a private school. My nephew only went to his local state school and he’s just been awarded the scholarship to study classics at Cambridge.
　　M:Anyway a private school is more innovative and open-minded in teaching children to learn. You will get the value of your money and it’s worthwhile.
　　W:Still I don’t know what I will do with my little boy next year. I don’t want him to go to that big new school. The children of all the common people in the area go there.
　　M:Well they are closing all the old schools. If you don’t like the new state school you will just have to pay to send him to a private school, won’t you?
　　19) According to the man, what is good about a private boarding school?
　　20) Why does the woman mention her nephew in the conversation?
　　21) Which of following can be concluded from the conversation?
　　22) What is the woman worried about?