Mass transportation revised the social andeconomic fabric of the American city in threefundamental ways. It catalyzed physicalexpansion, it sorted out people and land uses, andit accelerated the inherent instability of urban life. By opening vast areas of unoccupied land forresidential expansion, the omnibuses, horserailways, commuter trains, and electric trolleys pulled settled regions outward two to fourtimes more distant form city centers than they were in the premodern era. In 1850, forexample, the borders of Boston lay scarcely two miles from the old business district; by theturn of the century the radius extended ten miles. Now those who could afford it could live farremoved from the old city center and still commute there for work, shopping, andentertainment. The new accessibility of land around the periphery of almost every major citysparked an explosion of real estate development and fueled what we now know as urbansprawl. Between 1890 and 1920, for example, some 250,000 new residential lots were recordedwithin the borders of Chicago, most of them located in outlying areas. Over the same period, another 550,000 were plotted outside the city limits but within the metropolitan area. Anxiousto take advantage of the possibilities of commuting, real estate developers added 800,000 potential building sites to the Chicago region in just thirty years – lots that could have housedfive to six million people.
Of course, many were never occupied; there was always a huge surplus of subdivided, but vacant, land around Chicago and other cities. These excesses underscore a feature ofresidential expansion related to the growth of mass transportation: urban sprawl wasessentially unplanned. It was carried out by thousands of small investors who paid littleheed to coordinated land use or to future land users. Those who purchased and prepared landfor residential purposes, particularly land near or outside city borders where transit lines andmiddle-class inhabitants were anticipated, did so to create demand as much as to respond toit. Chicago is a prime example of this process. Real estate subdivision there proceeded muchfaster than population growth.
1. With which of the following subjects is the passage mainly concerned?
[A] Types of mass transportation.
[B] Instability of urban life.
[C] How supply and demand determine land use.
[D] The effect of mass transportation on urban expansion.
2. Why does the author mention both Boston and Chicago?
[A] To demonstrate positive and negative effects of growth.
[B] To exemplify cities with and without mass transportation.
[C] To show mass transportation changed many cities.
[D] To contrast their rate of growth.
3. According to the passage, what was one disadvantage of residential expansion?
[A] It was expensive.
[B] It happened too slowly.
[C] It was unplanned.
[D] It created a demand for public transportation.
4. The author mentions Chicago in the second paragraph as an example of a city,
[A] that is large.
[B] that is used as a model for land development.
[C] where the development of land exceeded population growth.
[D] with an excellent mass transportation system.
Vocabulary
1. revise 改变
2. fabric 结构
3. catalyze 催化，加速
4. sort out 把……分门别类，拣选
5. omnibus 公共汽车/马车
6. trolley (美)有轨电车，(英)无轨电车
7. periphery 周围，边缘
8. sprawl 建筑物无计划延伸，蔓延，四面八方散开
9. lot 小片土地
10. underscore 强调，在下面划横线
11. transit lines 运输线路
12. subdivision (出售的)小块土地，再划分小区
写作方法与文章大意
文章论述了“公共交通从三方面改变了城市的社会和经济结构。”采用分类写法。文章一开始就提出三方面：第一，促进城市实质性的扩展;第二，把人和土地分民别类加以利用;第三，加速了城市生活的不稳定性。然后就是三方面的具体内容。
答案见下一页》》
