A. many teachers B. some messages（短信）

C. mobile phones D. some students

　　　　　　　　　　　　　　　　D

　New York, London, Paris and other big cities are exciting places to live in. There are many interesting things to see and to do. You can go to different kinds of museums（博物馆）, plays （戏剧）and films. You can also go shopping to buy things from all over the world.

　　But there are serious problems in big cities，too. The cost of living（生活成本） is high, and there are too many people in some of big cities. Every year many people move to（搬到） the cities because there are some chances(机会) to find jobs, to study at good schools, and to receive good medical care（医疗护理）. But sometimes these people cannot find work or a good place to live in. Also, too many people in a small space make it hard to keep the cities safe and clean.

　　Some people enjoy living in big cities. Others do not. Before people move to big cities, they should think about the problems of living there.

32．In big cities people can .

　A．go to different kinds of museums B．see all kinds of plays and films

　C．buy things from all over the world D．A，B，and C

33．Which of the following is true?

　A．Big cities are not safe and clean enough.

　B．People can easily find a good place to live in a big city.

　C．Living in a big city doesn't cost（花费） a lot. D．All people like to live in big cities.

34．In this passage the writer advises people .

　A．to move to a big city B．not to move to a big city

　C．not to move to a big city without thinking about the problems there

　D．not to think about the problems before they move to a big city

35．Which is Not talked about in this passage（文章）?

　A．New York and London are big cities, and so is Paris.

　B．Big cities are better than small cities.

C．Big cities are exciting places to live in.