题目选项分析

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 0; on the canal the move took less than eight days and cost less than $6.

In 1825, before opening the Erie Canal, to move a ton of wheat took three weeks from Buffalo to New York City, which cost 0; moving it on the canal took less than eight days and cost less than $6.