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. - so hard that it makes burrowing difficult or so soft
that it could cause - hard enough to make burrowing difficult or soft
enough as to cause - so hard as to make burrowing difficult or soft
enough so it causes - as hard as to make burrowing difficult or as soft as
to cause - too hard, making burrowing difficult, nor too soft,
so as to cause
答案是A,我选的D,为什么用so as to错了呢?看了一些解释的,都争论于A/D |