Although the United States cherishes the tradition it is a nation of small

游客2024-10-31  11

问题      Although the United States cherishes the tradition it is a nation of small towns and wide open spaces, only one in every eight Americans now lives on a farm. The recent population trend has been a double one, toward both urbanization and suburbanization. Metropolitan areas have grown explosively in the past decade, and nearly half this increase has been in the suburbs. With the rapid growth of cities has come equally rapid decentralization. The flight of Americans from the central city to the suburbs constitutes one of the greatest migrations of modem times; quite residential sections outside cities have become conglomerations of streets, split-level houses, and shopping centers.
     This spurt of suburban expansion, however, does not alter the basic fact that the United States has become one of the most urban nations on the face of the earth. Census Bureau figures show that the rural population has been shrinking steadily since 1830. When the United States became a nation it had no large cities at all; today some fifty cities have population of more than 258,000. Mammoth complexes of cities are developing in the area of the East Coast and the east north-central states, on the Pacific and Gulf coasts, and near the shores of the Great Lakes. Some sociologists now regard the entire 600mile stretch between Boston and Washington D. C. - an area holding a fifth of the country’s population -- as one vast city or, as they call it, megalopolis. [br] One aspect of the recent population trend is the ______.

选项 A、development of complexes of cities
B、increasingly grcat distance between cities
C、transformation of cities into suburbs
D、growth of many small towns

答案 A

解析 文中最后提到东部及东中北部各州都在形成大城市群。B项意义正好与文中意思相反,城市要连为一体,而不是越来越远;C项意为将城市农村化,不正确;D项意为发展小城镇,也不对。因此选A项。
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