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标题: 求助PREP-135 [打印本页]

作者: jiyuztc 时间: 2007-5-7 16:33
标题: 求助PREP-135

135. Sixty-five million years ago, according to some scientists, an asteroid bigger than Mount Everest slammed into North America, which, causing plant and animal extinctions, marks the end of the geologic era known as the Cretaceous Period.

A. which, causing plant and animal extinctions, marks

B. which caused the plant and animal extinctions marking

C. and causing plant and animal extinctions that mark

D. an event that caused plant and animal extinctions, and it marks

E. an event that caused the plant and animal extinctions that mark

A: which 指代不清

B: 同上

C: and causing 和前面没有对称的对象

D: it指代不清

E: correct

为什么it指代不清,it不是就是指event吗?

作者: adlinker 时间: 2007-5-7 19:21

it可以指代an asteroid

作者: jiyuztc 时间: 2007-5-7 23:45

谢谢..

作者: MBAnMIS2008 时间: 2007-7-13 00:03
it指代不清，如果指代an event的话，违反句意，句意是说extinctions mark the end of ..era，不是an event.

作者: emmadon 时间: 2007-7-13 17:46

我觉得不是it指代不清的问题，而是逻辑意思的问题。

逻辑意思是，extinctions mark。

作者: 小猪快跑 时间: 2007-7-28 14:12

我觉得是并列的问题，是一个同位语名词无法和句子并列。

不理解为什么Event作为标志逻辑有问题

作者: christy42728 时间: 2008-4-29 10:43
如果选D ",and"则后面句子是和前面的主句平行,那么it优先指代an asteroid 而不是主句的同位语event.但是动作的发出者也不是event而是extinctions所以用从句表达最符合逻辑

[此贴子已经被作者于2008-4-29 10:45:27编辑过]

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