og 11th-7

sue2006

 7. Carnivorous mammals can endure what would otherwise be lethal levels of body heat because they have a heat-exchange network which kept the brain from getting too hot.

A. which kept

B. that keeps

C. which has kept

D. that has been keeping

E. having kept

B Correct. 答案A中除了时态错误外,ETS解释中说只能用that,不能用which,限定性定语从句用that 或which不都可以吗?

mbz

In this kind of sentence, it is always safe to think of "that" first.