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题库 / GMATLA-SC-117
When a ton of wheat was being moved from Buffalo to New York City before the opening of the Erie Canal in 1825, it took three weeks and cost $100, but when the canal was used, it took less than eight days and cost less than $6.
When a ton of wheat was being moved from Buffalo to New York City before the opening of the Erie Canal in 1825, it took three weeks and cost $100, but when the canal was used, it
Moving a ton of wheat from Buffalo to New York City before the opening of the Erie Canal in 1825, it took three weeks and cost $100; using the canal, it
Before the opening of the Erie Canal in 1825, moving a ton of wheat from Buffalo to New York City took three weeks and cost $100; on the canal the move
In 1825, before opening the Erie Canal, to move a ton of wheat took three weeks from Buffalo to New York City, which cost $100; moving it on the canal
To move a ton of wheat in 1825 from Buffalo to New York City took three weeks before the opening of the Erie Canal, costing $100, but in using the canal, the move
题目分析：
略。
选项分析：
A选项：代词it的指代对象只能是名词不能是句子，但在逻辑上，“花了三周的时间并且花费了100块”的应该是“把一吨的小麦从Buffalo这个地方移到纽约城这个事件”，因此句中it没有正确的指代对象。
B选项：代词it的指代对象错误同(A)。
C选项：Correct. 本选项在语法和逻辑上均是正确的。
D选项：不定式短语to move a ton of wheat需改成moving a ton of wheat from Buffalo to New York City，这点考查了不定式和ing的区别。用之于本题，在逻辑上我们讨论的是“从Buffalo移动小麦到纽约”这件事客观上会花费多长时间，而不是某一次或某一个人移动小麦的情况。另外，介词短语from Buffalo to New York City需紧挨着放在to move a ton of wheat身边。该介词短语是状语，需就近修饰一个句子。在本选项中其修饰的是took three weeks而不是move a ton of wheat。
E选项：不定式短语to move a ton of wheat需改成moving a ton of wheat from Buffalo to New York City错误同(D)。
Eo move a ton of wheat需改成moving
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