[問題] GWD23- Q13

[redeyes[origen]]

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

Ans: A

我選了D, 直覺是D最平行, 對答案再看一次覺得as hard/soft as to V用法好像怪怪的, 請問這是這個選項的文法錯誤嗎?
另外不懂A選項用could而不用can的原因, 前方用makes, 後面用could不會有點怪嗎?

Ps. 這禮拜剛做完GWD23, 但是板上好像沒什麼討論GWD23的文章, 請問這回題目是不是有跟其他幾回重複呢? 謝謝~

[訪客]

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

Ans: A

我選了D, 直覺是D最平行, 對答案再看一次覺得as hard/soft as to V用法好像怪怪的, 請問這是這個選項的文法錯誤嗎?
另外不懂A選項用could而不用can的原因, 前方用makes, 後面用could不會有點怪嗎?

Ps. 這禮拜剛做完GWD23, 但是板上好像沒什麼討論GWD23的文章, 請問這回題目是不是有跟其他幾回重複呢? 謝謝~redeyes

由句意得知後面該用假設語氣故用could
另句意為上 別相信有tense必須平行之說 在GMAT考試同一句子裡可能出現三種時態