首页
登录
职称英语
A country is said to become more urbanized as its cities grow in number, its
A country is said to become more urbanized as its cities grow in number, its
游客
2024-06-09
43
管理
问题
A country is said to become more urbanized as its cities grow in number, its urban populations increase in size, and the proportion of its population living in urban areas rises. The degree of urbanization varies across the world but generally reflects the wealth of individual countries. The rich, industrialized countries tend to be the most highly urbanized. In the Netherlands, for example, 89 percent of the population is urban, compared to only 13 percent in Ethiopia, a much poorer country.
In recent history, the degree of urbanization has been relatively low in Africa and Asia compared to Europe and North America. However, as a result of large-scale migration from rural areas and a natural increase in the urban populations themselves, the populations of cities in the developing world have been growing rapidly. The population of Cairo, for example, has tripled in the last 40 years, and more than half of Africa’s people are expected to be living in cities by 2020. Similarly, the urban share of the population in China has risen from about one in five in 1960 to nearly half today.
One of the most noticeable features of urban growth in the 20th century has been the rapid increase in the number of very large cities. Before 1800, cities with more than a million inhabitants were rare. Since then, however, the number of such cities has risen steadily. In 1900 there were at least 13 cities with more than a million inhabitants, and by 1950 the number had grown to 68. By 2000 there will be at least 250 cities of more than a million--many of which will be in Asia, especially in India and China.
Even a city of a few million people is dwarfed by the urban giants with populations exceeding 10 million. According to various estimates, there may be 20 or more of these gigantic metropolitan areas already. Most are in Asia: Tokyo, Seoul, Osaka, Shanghai, Mumbai (Bombay), Beijing, Calcutta, Jakarta, Tianjin, Karachi, Delhi, and Manila. The other giants are New York, Sao Paulo, Mexico City, Los Angeles, Moscow, Buenos Aires, Rio de Janeiro, and Cairo. In coming years, explosive growth in cities of the developing world such as Lagos and Santa Fe de Bogotá will almost certainly propel them into this group. By the year 2020, several cities are expected to have populations of more than 20 million.
Such large concentrations of people pose immense environmental problems. In Mexico City, for example, one-quarter of the population has no access to running water, and one in five houses is not connected to the sewerage system. Located in a valley, the city suffers so badly from air pollution from motor vehicles that the city center must periodically be closed to traffic. Mexico City’s problems are replicated in most other large cities in the developing world, and to a lesser degree in the large cities of industrialized countries as well. [br] A country’s urbanization can be seen from its increase in______.
选项
A、wealth
B、population
C、the number of cities
D、urban areas
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3627192.html
相关试题推荐
Dafterinterviewingbecomecommonpractice【S1】______intheUnite
TwocitiesthatlayattheedgeoftheMediterraneanmorethan1,200yearsag
【S1】[br]【S2】country→countriessuchcountry是指前面要求暂停进口转基因农产品的一些欧盟国家,为复数,所以应将coun
TwocitiesthatlayattheedgeoftheMediterraneanmorethan1.200yearsag
TheEuropeanUnionhadapprovedanumberofgeneticallymodifiedcropsuntil
[originaltext]EnglandwasthefirstcountrytocompetewithSpainforclaims
[originaltext]EnglandwasthefirstcountrytocompetewithSpainforclaims
Thefirstparagraphsuggeststhat______.[br]Citiesmakegoodhomesforperegr
The"wiredcities"intheUnitedStateswerenotconstructed,______.[br]InPa
TheJapaneseandU.S.governmentsbothstudiedtheconceptof"wiredcities"
随机试题
Themethodofwritingcalled"streamofconsciousness"isusedtodescribethe_
常用于描述一组变量离散趋势的统计量有________、________、____
结构化分析与设计是信息系统开发时常用的方法。按其生命周期特征,它应属于( )。
女性,20岁,1型糖尿病患者,出现恶心、厌食2天,神志不清1小时,查体面色潮红,
具有凝滞收引致病特点的邪气是A.风邪 B.寒邪 C.湿邪 D.燥邪
交感神经兴奋时引起的血管收缩是因为其末梢释放A.肾上腺素 B.去甲肾上腺素
以下关于主标尺的说法不正确的是(??)。A.主标尺应该以债权人真实的违约率为标准
教育行动研究是以教师的教育实践为主要导向的。()
已经获得的知识、动作技能、情感和态度等对新的学习的影响称为学习的()。 A.迁
建设工程实行施工总承包的,对施工现场安全生产负总责的单位是()。A.建设单
最新回复
(
0
)