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题库 / Prep2007E1-SC-115
Many population studies have linked a high-salt diet to high rates of hypertension and shown that in societies where they consume little salt, their blood pressure typically does not rise with age.
shown that in societies where they consume little salt, their
shown that in societies that have consumed little salt, their
shown that in societies where little salt is consumed,
they showed that in societies where little salt is consumed,
they showed that in societies where they consume little salt, their
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D：AND连接的两个句子时态要一致
请问一下，C选项为什么还要用where=in which呢？前面不是已经有in societies了嘛，那不就变成in societies in which...这不是有些重复了么？
C里的（have) shown that, 不应该是showed that吗，已经展示感觉不太连贯
they和their没有指代对象。
(B) that引导的定语从句修饰就近的名词societies in societies （不能消耗）that have consumed little salt，逻辑意思不合理;their没有指代对象。
where 定语从句 或者 地点状语从句
但是这里c的where可以指代societies吗？Manhattan里说抽象名词不可以用where指代啊，where只能指代具体place啊
in (e), the first "they" is again fine - same antecedent as (d), albeit burdened with the same awkward repetition problem - but the second "they" doesn't have an antecedent.
in (d), "they" unambiguously refers to "many population studies", so it's fine (although it constitutes unnecessary repetition - this is already the subject of the sentence, so it needn't be repeated; see (c))
the principal problem with (d) is the lack of tense parallelism. since "have linked" is in the present perfect, the present perfect is also compulsory for the other verb (i.e., it should be "shown", not "showed").
A & B are incorrect because "their" is referring to societies but that is illogical because it is people in the societies and not the soiciety itself that can have blood pressure.
shown/they showed考平行，逗号后是否要加their考指代
DE主要是那个they没有必要加上去。
为什么要用shown呀，不应该是被展示，而是这些研究展示了，d为什么不对呢？
我觉得是 studies have linked .....and (have) shown....
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在GMAT中，where不是只能指代实际的地点吗？还可以指代society啊。。。
D选项的错误是主语赘余？还是需要和前面一样用完成时态？
正确答案是C，但是shown that in societies where little salt is consumed, blood pressure typically does not rise with age.
这两个句子间没有连词啊
为什么是正确的
in societies where little salt is consumed是介词短语啊，where little salt is consumed是定语从句，修饰societies的。
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