1 Unit 4 学习单元四中有关 The Suburban Century 郊外的世纪 The United States is a nation of suburbs
The 1990 census makes it official
Nearly half the 美国是一个年轻的国家的郊区
一九九○年的人口普查使它的官员
近一半的 country 's population now lives in suburbs, up from a quarter in 1950 and a third in 1960
国家的人口现在住在郊区的四分之一,而在 1950 年,三分之一在 1960 年创立的
The third century of American history is shaping up as the suburban century
Until 1920 most 第三世纪的美国历史是塑造成郊区的世纪
直到 1920 年最 Americans lived in rural areas
By 1960 the country was a third urban, a third rural, and a 美国人都生活在乡下
1960 年第三个国家的城市,三分之一的农村, third suburban
That balance didn't last long, however
By 1990 the urban population had 第三郊区
这种平衡没有延续很久,不过了
到 1990 年城市人口 2 slipped to 31 percent and the rural population was down to less than a quarter
We are now a 滑落至31%和农村人口是到不到一