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.
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. (that) introduces a restrictive clause; --------which keeps对吗?which不是也能引导a restrictive clause么?如果指物的话。但看OG解释好像这里只能用that似的。
以下是引用yinuoqianjin在2006-8-10 0:50:00的发言: there is no comma in og11th, thus it is the restrictive clause and choice B is wise.
sorry, 我偷懶拷贝别人的,现在攺过来了。
请再看我的问题,因为OG的Explanation里有这么一句:Here, the clause following "which" defines "heat-exchange network", so "that" must be used in plhace of "which". 我不能理解这句,认为which keeps在这里也对。请讲评一下。