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网上查了很多链接和资料，而且无论做几次，我都会选择D。请大神帮忙看看解释一下。附原文相关片段和题目如下：Paragraph 3
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.
题目：
5. According to paragraph 3, what was a disadvantage of shipping goods from northwestern areas to New Orleans?
A. There was no reliable way to get goods from New Orleans to eastern cities.
B. The cost of shipping goods by river to New Orleans continued to increase.
C. Goods shipped from New Orleans‟ neighboring areas had a significant competitive advantage because of their lower transportation costs.
D. The temperatures and humidity.
嗯嗯嗯
我查到的答案解析：
答案 B
解析 细节题: 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. 意思是说因为虽然货物本身的价值在增加, 但是南部的市场 份额却在下降, 就暗示了越来越少人的人愿意通过该途径运货, 即要么速 度太慢要么成本太高。因此这道题的答案是 B
我的问题是： the value of goods continued to increase,那是货物本身的价值好嘛，不是运输成本。文段根本没有提到运输成本的细节，为什么会选这个？？？？？？？
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发表于 2015-10-12 21:28:11
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