American 【B1】______ are similar to other cities 【B2】______ the world. In every country, ci

ties reflect the values of the 【B3】______ . Cities contain the very best parts of a 【B4】______ . They also 【B5】______ the very 【B6】______ parts of a society, violent crime, racial conflict, and poverty American cities are 【B7】______ , 【B8】______ American society is changing.

After World War Ⅱ city residents became richer and more prosperous. They had 【B9】______ children. They needed more 【B10】______ . They moved 【B11】______ their apartments in the city to buy their own homes. They bought houses in the suburbs-areas near a city 【B12】______ people lived. These are areas 【B13】______ many offices or factories. During the 1950s the American's "dream" 【B14】______ have a house in the suburbs.

Now things are changing. The children of the people who left the cities in 1950s are now 【B15】______ . They 【B16】______ their parents want to live in the cities. Many young professionals, doctors, lawyers, and teachers are moving 【B17】______ into the city. Many are single, others are married but often without children. They prefer the city 【B18】______ the suburbs because their jobs are there, they are afraid of the fuel 【B19】______ or they just enjoy the excitement and opportunities which the 【B20】______ offers.

A．people

B．city

C．cities

D．towns