单选题 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, plays 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 is high, and there are too many people in some of big cities. Every year many people move to the cities because there are some chances to find jobs, to study at good schools, and to receive good medical care. 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.

单选题 Which is the best title(题目)for this passage?

【正确答案】 A

【答案解析】本文主要讲居住在大城市里的各种利弊，故题目应选A为宜，B项仅讲三个大城市，不具有普遍性，C、D两项都强调了一个方面，不全面。

单选题 In big cities people can ______.

单选题 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 cities.
C、 Big cities are safe, but not clean.
D、 All people like to live in big cities.

【正确答案】 A

【答案解析】根据第二节最后一句，过多的人口使大城市显得拥挤、不安全及不清洁，A为正确答案。B项所述与文章相反，根据第三节第一句，D项也应排除。

单选题 In this passage the writer advised(建议)people ______.

A、 to move to a big city
B、 not to move to big city
C、 not to move to a big city without thinking about the problems there
D、 not to think too much about the problems before they move at a big city

【正确答案】 C

【答案解析】根据本文最后一句，作者告诫人们在去大城市之前，认真思考一下那里的问题，故 C为正确答案。