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
2023-09-13
39
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/3010926.html
相关试题推荐
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Wemust_______________________(充分利用自然资源)tobenefitourcountrymen.makethem
Thelongyearsoffoodshortageinthiscountryhavesuddenlygivenwaytoa
Thelongyearsoffoodshortageinthiscountryhavesuddenlygivenwaytoa
Britainwasawealthycountry.Therewereafewveryrichpeoplewhoreceive
Britainwasawealthycountry.Therewereafewveryrichpeoplewhoreceive
Britainwasawealthycountry.Therewereafewveryrichpeoplewhoreceive
随机试题
OlkswagenbelievesitwasworthstickingitoutinChinainthe1990swhentheh
Womengivingbirthareoftenofferedacupunctureinsteadofpain-killingdrugs.分
高中地理《山地的形成—褶皱山》主要教学过程及板书设计 教学过程 有物理学家提出,造成恐龙大绝灭的原因很可能是大规模的海底火山爆发。那么火山又是何方神圣,竟能
私营、外资企业中劳动者的工资是()。A.按劳分配收入 B.按生产要素分配收入
采用公开招标方式的费用占政府采购项目总价值的比例过大的政府采购项目,可以按照《中
A煤矿为井工煤矿,生产能力120×104t/a,共有员工1200人。该矿地质构造
硝酸甘油不具有的药理作用是A.增加心室壁肌张力 B.减少回心血量 C.扩张容
证券交易所交易系统接受申报后,成交价格的确定情况有()。 A.通过买卖双方协
( )是指商业银行能够以合理成本通过各种负债工具及时获得零售或批发资金的能力。
用于电力线路上的电器设备是( )。A.金具 B.接地装置 C.断路器 D.
最新回复
(
0
)