请教nn们一道GWD的SC，多谢

satancn

41. GWD-23-Q13

Researchers hypothesize that granitic soil is the ideal construction material for the desert tortoise because it is not so hard that it makes burrowing difficult or so soft that it could cause tunnels to collapse.

 

A.      so hard that it makes burrowing difficult or so soft that it could cause

B.       hard enough to make burrowing difficult or soft enough as to cause

C.      so hard as to make burrowing difficult or soft enough so it causes

D.      as hard as to make burrowing difficult or as soft as to cause

E.       too hard, making burrowing difficult, nor too soft, so as to cause

答案是A

为啥不用D呢，觉得D更对称

rosals88

not 就是否定词了，怎么还能as...as呢

tzltn

as...as表示比较，这两者没有比较关系。从语意上讲，只有A平行。

我自己这么觉得，不知道对不对