[讨论]OG11-105关于which指代问题

The original sentence successfully avoids the problems that may occur in a long sentence with multiple modifiers. The sentence opens with the modifier originally developed for detecting air pollutants. This participial phrase is immediately followed by the word technique that it modifies; technique is in turn followed by the phrase called proton-induced X-ray emission. Finally, the non-restrictive clause which ... destroying it is correctly placed next to emission and set off from the rest of the sentence by a pair of commas.

　　A Correct. The modifiers are all correctly placed

C        Called proton-induced X-ray emission should be placed next to a technique and should not be set off by commas; relative clause introduced by which incorrectly and illogically modifies emission

D      Called proton-induced X-ray emission should be placed next to a technique and should not be set off by commas; relative clause introduced by which incorrectly and illogically modifies emission; has the ability to is wordy

E       Called proton-induced X-ray emission should be placed next to a technique and should not be set off by commas; has the ability to is wordy

对答案没疑问。

但是不理解OG红色部分的解释，OG认为CD的which修饰emission错，

可是正确选项A的which不也是修饰emission么

是不是因为A的called proton-induced x-ray emission为修饰成分，所以which不就近指代emission,

而是跳跃修饰technique呢？

谢谢指教！

自我总结：

sth called X，which… 中：which 指代 sth;

sth，called X，which… 中：which 指代 X;

只能这样理解了!

这个题中的Which指代还是不清楚，NN们快帮忙啊

One more question about 限制性 和 非限制性定语从句

from og：

A：which 引导的为 非限制性从句

C,D: which 引导的为 限制性从句

为什么啊 非限制从句不是有逗号分开吗 C;D 也分了呀！！！

在GMAT中，碰到2个modifier（2M）的情况时，一般S,M,M,VO是错误的结构，因为S和VO离得太远。

比较常用的结构是M,S,M,VO，这样比较清楚，也不容易出现M和M之间互相修饰的问题。

M,M,SVO也有可能是正确的选项，比如OG102，但是一般来说M,M,SVO这种结构会造成OG中说的“Placement of two long modifiers at the beginning of the sentence is awkward and makes it difficult to locate the subject”