题目选项分析

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 0; using the canal, it took less than eight days and cost less than $6.

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.