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标题: 求教最新GWD-6-41 [打印本页]

作者: bigdreamer 时间: 2006-8-12 06:05
标题: 求教最新GWD-6-41

Scientists have dated sharp-edged flakes of stone found in the fine-grained sediments of a dry riverbed in the Afar region of Ethiopia to between 2.52 and 2.60 million years ago, pushing back by more than 150,000 years the earliest date when it is known that humans made stone tools.

when it is known that humans made
at which it is known that humans had made
at which humans are known to have made
that humans are known to be making
of humans who were known to make

答案为什么是A而不是C

作者: 端木晴 时间: 2006-8-12 13:38
GMAT语法里面which不能用来指代时间

作者: VicSi 时间: 2006-8-12 22:04
晕我也选的Ｃ

作者: superquentin 时间: 2006-8-12 22:26
date必跟when，时间不能用waht，which之类。有最高级（earliest）的主句之后的从句也不能用that

作者: dori0214 时间: 2006-8-23 14:04

以下是引用superquentin在2006-8-12 22:26:00的发言：
date必跟when，时间不能用waht，which之类。有最高级（earliest）的主句之后的从句也不能用that

尊的吗？

厄。其实我比较喜欢c a里面有两个动作，when不知道修饰哪一个

作者: dori0214 时间: 2006-8-24 07:06

以下是引用superquentin在2006-8-12 22:26:00的发言：
date必跟when，时间不能用waht，which之类。有最高级（earliest）的主句之后的从句也不能用that

满害人的这个话说得。。。

http://forum.chasedream.com/dispbbs.asp?boardID=22&ID=184951&page=1

作者: missgmat 时间: 2007-1-25 12:54
me too. C

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