紧急求助：语法题一道，各位都帮我看一看吧~~

听sophie

35. (26325-!-item-!-188;#058&002592)

In laboratory rats, a low dose of aspirin usually suffices to block production of thromboxane,

which is a substance that promotes blood clotting, but not seriously interfering with the production of prostacyclin, which prevents clotting.

(A) which is a substance that promotes blood clotting, but not seriously interfering
(B) a substance that promotes blood clotting, but not seriously interfering
(C) a substance that promotes blood clotting, but does not seriously interfere
(D) which is a substance to promote blood clotting, but does not seriously interfere
(E) which is a substance that promotes blood clotting, but not a serious interference

不理解之处：
  这个是07prep笔记上关于选项C的解释
(C)正确, a substance that…独立主格结构作为thromboxane的同位语对thromboxane进行解释
说明; but does跳过同位语和suffices并列共同作为a low dose of aspirin的谓语动词。

为什么这个but does可以越过同位语与前面的动词并列？而选项B中后面的interfere就是和前面的promote并列的？有没有does有什么区别么？

先在这里谢过各位抽时间看帖子的同学们~Thank you so much!

听sophie

顶下自己~大家新春快乐！

dhr945

In laboratory rats, a low dose of aspirin usually suffices to block production of thromboxane,
which is a substance that promotes blood clotting, but not seriously interfering with the production of prostacyclin, which prevents clotting.
1. 判别定语从句还是同位语 which 就近修饰名词 歧义》》B,C
2. but,and...并列位于》》C

danielwzy

B那个分词和谁都并列不了吧。。。

Serena0710

我认为，这就是个并列，只是两个并列项比较长，但仔细看还是可以看出来的。原句有两个非限制性定语从句：一个是which promotes clotting,另一个是which prevents clotting.显然这两个是并列的，所以可以推测出interfere应该和 suffice是并列的。题长没关系，揪出主干来看就比较容易了~ 这样解释能明白吗？呵呵，非牛观点，仅供参考~

Serena0710

对了，那个does必须要，因为interfere和suffice是并列的。这点仔细体会一下~我是手机党的说~太具体的就不给你解释了，自己好好体会一下~

听sophie

In laboratory rats, a low dose of aspirin usually suffices to block production of thromboxane,
which is a substance that promotes blood clotting, but not seriously interfering with the production of prostacyclin, which prevents clotting.
1. 判别定语从句还是同位语 which 就近修饰名词 歧义》》B,C
2. but,and...并列位于》》C

-- by 会员 dhr945 (2011/2/7 19:21:27)

这个which要是就近修饰名词的话，应该没有造成歧义。
因为如果判别这个是个同位语的话，修饰的也是就近的这个名词thromboxane啊。
我个人的理解，不知道对不对
所以觉得第一步的排除有些小牵强了…

hyyyyyy

我也同意楼上的观点  这里的which应该没有错吧

听sophie

我也同意楼上的观点  这里的which应该没有错吧

-- by 会员 hyyyyyy (2011/2/10 15:52:55)

嗯嗯~我才仔细看到大家回复的，看来和我想法一样呢
只是到现在还不太明白为什么interfere和suffice并列的时候，interfere前面必须要加上does?

听sophie

B那个分词和谁都并列不了吧。。。

-- by 会员 danielwzy (2011/2/7 19:25:13)

对对~分词是和前面平行不了，只是我当时考虑的是如果把分词改成动词的话这个对不对？
可是下面的选项中比单独的这个interfere还要多一个does，我一直在纠结于这个……does的问题……