模考时遇到的题：

xiangmingliu08

In the Louisiana Purchase of 1803, the United States acquired 828,000 square miles for about four cents an acre, which more than doubled the country's size and that brought its western border within reach of the Pacific Ocean.
(C) With the Louisiana Purchase in 1803, the United States acquired 828,000 square miles for about four cents an acre, more than doubling its size and bringing
(E) Acquiring 828000 squre miles in the Louisiana Purchase of 1803, the United States bought it for about four cents an acre, more than doubling the country's size and bringing

答案是C,但是我最初选的是E. 想知道原因，因为觉得C 中最后的its指代不明，所以没哟选

juneff

its size 和后面的 its western boarder 平行，都是指 the United States'

shkyxy

俺觉得，its在这里只能 指代the United States,而E中的 it 既可以指代 the United States又可以指代 Louisiana Purchase，所以 选C