There are no man-made structures ____the Great Wall.A as big B so big as C higher as D higher than
问题描述：
There are no man-made structures ____the Great Wall.A as big B so big as C higher as D higher than
选B还是C
There are no man-made structures _ the Great Wall.It is the biggest one in the world
选B还是D.如果是B的话，为什么可以用so.
答
选B.higher 是比较级.后面要加than才对,但是D也不对,因为长城是以其大而著称的,而不是因为其高