又求助一题

25. A recent study of ancient clay deposits has provided new evidence supporting the theory of global forest fires ignited by a meteorite impact that contributed to the extinction of the dinosaurs and many other creatures some 65 million years ago.
(A) supporting the theory of global forest fires ignited by a meteorite impact that
(B) supporting the theory that global forest fires ignited by a meteorite impact
(C) that supports the theory of global forest fires that were ignited by a meteorite impact and that
(D) in support of the theory that global forest fires were ignited by a meteorite impact and that
(E) of support for the theory of a meteorite impact that ignited global forest fires and

选了B但是有点不太清楚别的选项的错误，请牛牛们指点，谢谢：）

C,D中的that指代不明，排除，（还有其他错误）。

E 看到（evidence）
                    of support for，排除。

你有点困惑的也许是A，B。

A:

A recent study of ancient clay deposits has provided new evidence supporting the theory of global forest fires ignited by a meteorite impact that
                contributed to the extinction of the dinosaurs and many other creatures some 65 million years ago.

B:

A recent study of ancient clay deposits has provided new evidence

supporting the theory that global forest fires ignited by a meteorite impact
contributed to the extinction of the dinosaurs and many other creatures some 65 million years ago.

弄清楚结构，这句话应该是

A recent study （of ancient clay deposits） has provided new evidence
                    

{supporting the theory[ that global forest fires（ ignited by a meteorite impact）] contributed to the extinction of the dinosaurs and many other creatures some 65 million years ago}.

黑体的是整个句子的主干，红色的是从句里的主谓宾。

再来看A，你看那两个红色标记的地方，是不是也发现它结构上的问题了。

明白你说的意思了，那么A中的that也有歧义是吗？不知道是指代impact or the theory

对吗？

A recent study of ancient clay deposits has provided new evidence supporting the theory of global forest fires ignited by a meteorite impact that contributed to the extinction of the dinosaurs and many other creatures some 65 million years ago.

A中的that从句　会就近修饰 a meteorite impact ，是错的．

你想想，造成恐龙和其他一些生物灭亡(contributed to the extinction of the dinosaurs and many other creatures some 65 million years ago)的是什么?

是不是应该是global forest fires,而不是a meteorite impact ?

而A recent study of ancient clay deposits has provided new evidence supporting the theory of global forest fires ignited by a meteorite impact that contributed to the extinction of the dinosaurs and many other creatures some 65 million years ago. 中,

that从句跟在impact后面，就是在就近修饰impact.

这样说，不知道你清楚了没？

呵呵，是这样啊，我做这题的时候就觉的a meteorite impact 也是可以造成恐龙和其他一些生物灭亡的，可能知识不够吧：）