156. Dirt roads may evoke the bucolic simplicity of another century, but financially strained townships point out that dirt roads cost twice as much as maintaining paved roads. (A) dirt roads cost twice as much as maintaining paved roads (B) dirt roads cost twice as much to maintain as paved roads do (C) maintaining dirt roads costs twice as much as paved roads do (D) maintaining dirt roads costs twice as much as it does for paved roads (E) to maintain dirt roads costs twice as much as for paved roads 虽然我也知道b是正确答案 同问d)选项 如果改成 maintaining for dirt roads costs twice as much as it does for paved roads 这样是否就正确了? 如楼上所说it 可以指代maintaining 谢谢高人指点
[此贴子已经被作者于2008-3-19 17:01:04编辑过] |