GMAT
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.
Researchers hypothesize that granitic soil is the ideal construction material for the desert tortoise because it is not too hard, making burrowing difficult, nor too soft, so as to cause tunnels to collapse.
题目基本信息