ＴＴＧＷＤ２３一直存在的疑问

jessiebetty

ＴＴＧＷＤ２３

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.

 

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

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

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

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

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

为什么是Ａ，他比较罗嗦不是？？

Ｃ不行么，在ＧＷＤ里也有否定用 as ..as 的

顾风

C关键是 soft enought so it causes与前面不平行

everhappyin

D呢？

gonghao

as 。。。as比较对象要对等

前面是花岗岩（it做代词），as。。。as后面是不定式

这里显然式so that更好

A is the best answer among  the five choices

顾风

如果用D的话，前面的it改为 to do就比较合适了。。。

zimerman

顶！

jupiter410

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