105. Originally developed for detecting air pollutants, a technique called proton-induced x-ray emission, which can quickly analyze the chemical elements in almost any substance without destroying it, is finding uses in medicine, archaeology, and criminology. (A) Originally developed for detecting air pollutants, a technique called proton-induced x-ray emission, which can quickly analyze the chemical elements in almost any substance without destroying it, (B) Originally developed for detecting air pollutants, having the ability to analyze the chemical elements in almost any substance without destroying it, a technique called proton induced x-ray emission (C) A technique originally developed for detecting air pollutants, called proton-induced x-ray emission, which can quickly analyze the chemical elements in almost any substance without destroying it, (D) A technique originally developed for detecting air pollutants, called proton-induced x-ray emission, which has the ability to analyze the chemical elements in almost any substance quickly and without destroying it, (A) (E) A technique that was originally developed for detecting air pollutants and has the ability to analyze the chemical elements in almost any substance quickly and without destroying the substance, called proton-induced x-ray emission, 下面的是OG11的解释
下面的是OG11的解释
A Correct. The modifiers are all correctly placed and punctuated; the meaning is clear.
C Called proton-induced X-ray emissions should be placed next to a technique and should be set off by commas; relative clause introduced by which incorrectly and illogically modifies emission.
请问大家:
为什么在A中,a technique called proton-induced x-ray emission, which which指的是technique ,而在C中which指的是emission,在A和C中which都是在emission后面,并且which前面有个逗号???区别在哪里??
whichz引导非限制性从句是指代靠它最近的词(像C选项中的emission)???还是指代前面的词组的核心词(像A选项中的technique )?????
[此贴子已经被作者于2006-8-25 9:32:17编辑过] |