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A rapid means of long-distance transportation became a necessity for the Uni
A rapid means of long-distance transportation became a necessity for the Uni
游客
2025-03-24
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管理
问题
A rapid means of long-distance transportation became a necessity for the United States as settlement (新拓居地) spread ever farther westward. The early trains were impractical curiosities, and for a long time the railroad companies met with troublesome mechanical problems. The most serious ones were the construction of rails able to bear the load, and the development of a safe, effective stopping system. Once these were solved, the railroad was established as the best means of land transportation. By 1860 there were thousands of miles of railroads crossing the eastern mountain ranges and reaching westward to the Mississippi. There were also regional southern and western lines.
The high point in railroad building came with the construction of the first transcontinental system. In 1862 Congress authorized two western railroad companies to build lines from Nebraska westward and from California eastward to a meeting point, so as to complete a transcontinental crossing linking the Atlantic seaboard with the Pacific. The Government helped the railroads generously with money and land. Actual work on this project began four years later. The Central Pacific Company, starting from California, used Chinese labor, while the Union Pacific employed crews of Irish laborers. The two groups worked at remarkable speed, each trying to cover a greater distance than the other. In 1869 they met at a place called Promontory in what is now the state of Utah. Many visitors came there for the great occasion. There were joyous celebrations all over the country, with parades and the ringing of church bells to honor the great achievement.
The railroad was very important in encouraging westward movement. It also helped build up industry and farming by moving raw materials and by distributing products rapidly to distant markets. In linking towns and people to one another it helped unify the United States. [br] The major problems with America’s railroad system in the mid 19th century lay in______.
选项
A、poor quality rails and unreliable stopping systems
B、lack of financial support for development
C、limited railroad lines
D、lack of a transcontinental railroad
答案
A
解析
本题是一道具体细节题。问19世纪中叶美国铁路系统存在的主要问题是什么。利用查阅式阅读法我们可以在文章第一段第三句话里找到相关信息。这句话指出,当时最严重的技术问题是铁路路轨承受重载的能力有限和缺乏一种安全有效的制动系统。因此,本题的正确答案应该是A“铁轨的质量糟糕和制动系统不可靠”。
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