求问gmat中has been doing对还是错啊？ og 12 sc10中说错呢!

cookiezwy · 发表于 2013-3-31 20:36:45

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

D. Has been keeping is the wrong tense

victor198506 · 发表于 2013-3-31 21:08:19

因为在这句句子中不需要用完成进行时

rylstar01 · 发表于 2013-3-31 22:41:20

1）同意楼上victor说的，句中没有提示现在完成时的时间词。
2）而且Carnivorous mammals 的这种现象，应该算是一个自然规律吧，用一般现在时比较好。

cookiezwy · 发表于 2013-4-1 06:37:31

嗯嗯！知道了谢谢大家~

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求问gmat中has been doing对还是错啊？ og 12 sc10中说错呢!

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求问gmat中has been doing对还是错啊？ og 12 sc10中说错呢!

所属分类: 下线版块

正在浏览此版块的会员 ()

本贴相关题目 OG-2016-SC-15OG-2016-SC-15
OG-2015-SC-12
OG-13-SC-12
OG-12-SC-10
... (PTZL)