单选题

What is the main idea of the passage?

A The delicacy of the Chinese restaurant in Singapore.

B The advantages and disadvantages of living in a cosmopolitan city.

C The danger and threat of population explosion in urban areas.

D The high living standard of Singapore, London, Paris and New York.

解析：
主旨题。录音开头讲话者便表示自己在一个世界性城市——新加坡，生活了五年，接着表明自己很喜欢那里的生活方式，并以事例进行具体说明。然后，讲话者承认住在这样的城市也有不利之处，并作了具体阐释。由此可见，该段录音主要介绍了住在世界性大城市的优点和弊端。因此选项B能全面概括录音的主要内容。
【录音原文】
　　For five years I lived in Singapore, a metropolis of almost three million people. Like London, Paris and New York, Singapore is a cosmopolitan city, with people from different parts of the world living and working together. I enjoyed the urban lifestyle I led there, and made the most of the super amenities, ranging from the excellent shops to some of the best restaurants in the world. In the evenings and at weekends there were always cultural events, with such diverse attractions as classical Western music, and exhibition of Malay art or a Chinese opera in the street, it was difficult to get bored. Perhaps most impressive, however, was the remarkable transport infrastructure, with excellent roads, a swift and efficient bus service and a state-of-the-art underground system which could whisk commuters from the suburbs straight into the heart of the city. This is particularly important, as the government banned private cars from entering the central business district during the morning and afternoon rush hours to reduce congestion on the roads and pollution from the exhausts.
　　Of course, living in a city like this has its disadvantages as well. For a start, the cost of living can be very high—renting an apartment, for example, is very expensive. And as the city is expanding, there are a lot of building sites where new apartments are continually being built to deal with the population explosion which is a direct result of the government encouraging people to have more children.