In the mid-nineteenth century, work began on a crucial section of the railway line connecting Boston to the Hudson River. The ad

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问题    In the mid-nineteenth century, work began on a crucial section of the railway line connecting Boston to the Hudson River. The addition would【C1】______from Greenfield, Massachusetts, to Troy, New York, and it required tunnelling【C2】______Hoosac Mountain, a【C3】______impediment, nearly five miles thick, that blocked the【C4】______between the Deerfield Valley and a tributary of the Hudson.
   James Hayward, one of New England’s leading railroad engineers, estimated that penetrating the Hoosac would cost,【C5】______, a very manageable two million dollars. The president of Amherst College,【C6】______geologist, said that the mountain was composed of soft rock and【C7】______tunnelling would be fairly easy【C8】______the engineers had breached the surface. "The Hoosac is believed to be the only barrier between Boston and the Pacific," the project’s promoter, Alvah Crocker, 【C9】______
   Everyone was wrong. Digging through the Hoosac turned out to be a【C10】______. The project cost more than ten times the budgeted【C11】______If the people involved【C12】______the true nature of the challenges they faced, they would never have funded the Troy-Greenfield railroad.【C13】______, had they not, the factories of northwestern Massachusetts wouldn’t have been able to ship their goods so easily to the expanding West, the【C14】______of freight would have remained stubbornly high, and the state of Massachusetts would have been【C15】______poorer.
【C4】

选项 A、framework
B、partition
C、interaction
D、passage

答案D

解析 本题考查名词词义辨析以及对语句上下文的理解。A框架;B分割,划开;C相互交流,相互沟通;D通道。原文的意思是,Hoosac山阻碍了Deerfield Valley与哈德逊河一个支流的连接。
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