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; (keeps) indicates a current situation and is consistent with the other verbs in the sentence.
记得前人总结的that前面好像不能有逗号啊,怎么这里可以用逗号来代表限定性定语从句?
谢谢jandjshi哦
你抄错拉
不过定语从句是可以有逗号的
限与非的区别是非只是做一个补充说明,去掉之后还是可以表达一个完整的意思,但限不行,
逗号之说只是高中老师上课说的一个简单办法
但不能解所有题
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