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Look at the four squares, A, B, C, and D, which indicate where the following sen
Look at the four squares, A, B, C, and D, which indicate where the following sen
游客
2024-01-02
8
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问题
Look at the four squares, A, B, C, and D, which indicate where the following sentence could be added to the passage below. Where would the sentence best fit?
The Romans built many in Europe, as did the Chinese at around the same time.
Early bridges were built on the principle of the pillar and beam. Vertical pillars and horizontal beams stretched from one side of a river to the other. However, with beam construction, the span had to be short. A Long crossings required many pillars, which would impede river traffic. B The arch, a relatively late development, provided a much more elegant solution. The arch could reach high above the river, leaving shipping lanes unobstructed. C When constructed of stone, the arch could bear a tremendous load. Stone arch bridges were suitable for carrying roads over rivers and for carrying aqueducts. D The tradition of building stone arch bridges continued for nearly two thousand years.
选项
A、
B、
C、
D、
答案
D
解析
In the added sentence, many refers to stone arch bridges in the previous sentence and in the following sentence.
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