单选题 {{B}}Passage Three{{/B}}
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 joys 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.
单选题 The major problems with America's railroad system in the mid 19th century lay in ______.
【正确答案】 D
【答案解析】[解析] 本题是细节题。文中第一段提到铁路公司面临的一些技术问题。而其中最严重的是建造能承受重载的铁路,发展一种安全而有效的火车停车系统。所以D选项是正确答案。文中说到19世纪60年代美国已经有成千上万条铁路了。故A选项错误。B选项不是当时的主要问题。C选项与原文内容矛盾。
单选题 The building of the first transcontinental system ______.
【正确答案】 D
【答案解析】[解析] 本题是细节题。文中最后一段说,这条横贯大陆的铁路通过运输原材料和把产品运输到距离远的市场帮助发展了工业和农业,D选项是对原文内容的同义转述。A选项原文未提及。原文说这条铁路在西进运动中扮演着重要的鼓励作用,可是这不等于说鼓励人们去西部淘金,故B选项错误。原文说铁路建成时吸引了许多人到工地庆祝这个重大的事情,但这只是一时的情况,所以C选项不准确。
单选题 The construction of the transcontinental railroad took ______.
【正确答案】 B
【答案解析】[解析] 本题是推理题。原文说1862年美国国会授权两家铁路公司建造横穿大陆的铁路。真正的工作在4年后开始,到1869年铁路建造完工,因此这条横穿大陆的铁路的建造花了三年的时间。所以B选项是正确答案。
单选题 What most likely made people think about a transcontinental railroad?
【正确答案】 B
【答案解析】[解析] 本题是推理题。文中第二段说两家铁路公司分别向西和向东修建铁路直到铁路会合,并说这是为了完成一条横贯大陆的铁路,把大西洋沿岸和太平洋连接起来。B选项是对原文的正确理解,是正确答案。
单选题 The best title for this passage would be ______.
【正确答案】 C
【答案解析】[解析] 本题是主旨题。文中第一段讲述了美国铁路在19世纪60年代面临的一些问题和取得的成就。第二段讲述了美国修建横贯大陆铁路的过程。第三段讲述了这条横贯大陆铁路对美国尤其是美国西部的影响。因此文章主要讲述的是有关这条横贯大陆,连接太平洋和大西洋沿岸的铁路的内容。所以最适合做文章标题的是C选项。