戴爾美語托福TOP解析 - 英檢

The new railroad networks shifted the direction of western trade.
In 1840 most northwestern grain was shipped south down the Mississippi River
to the bustling port of New Orleans.
But low water made steamboat travel hazardous in summer,
and ice shut down traffic in winter. Products such as lard, tallow, and
cheese quickly spoiled if stored in New Orleans' hot and humid warehouses.
Increasingly, traffic from the Midwest flowed west to east,
over the new rail lines.
Chicago became the region's hub, linking the farms of the upper Midwest to
New York and other eastern cities by more than 2,000 miles of track in 1855.
Thus while the value of goods shipped by river to New Orleans continued to
increase, the South's overall share of western trade dropped dramatically.


1. According to paragraph 3, in what way did the new rail networks change
western trade?
(A) Northwestern farmers almost completely stopped shipping goods by steamboat.
(B) Many western goods began to be shipped east by way of Chicago rather than
south to New Orleans.
(C) Chicago largely replaced New York and other eastern cities as the final
market for goods for the West.
(D) The value of goods shipped west soon became greater than the value of
goods shipped east.

詳解請參考:
http://allenglishtoefljj.blogspot.tw/2015/06/tpo-33-detailed-factual-information.html
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