OG12 SC107

kadin5568576

107.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,
(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,
我看了OG的答案，还是不明白为什么A中which引导的从句就不会引起修饰问题，而C中的which引导的从句就会一起修饰问题呢
多谢NN指教

(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,
我看了OG的答案，还是不明白为什么A中which引导的从句就不会引起修饰问题，而C中的which引导的从句就会一起修饰问题呢
多谢NN指教

MiaZhang

A中which是指代a technique，因为technique是主语，有一种情况叫做定语后置，就是将主语过长的定语放到句子后面，这样做主要是为了保证主句的完整性。
而C中which与technique相距太远了，修饰容易产生歧义

liberzephyr

A. Originally developed..,a technique ..., which
C. A technique originally developed for detecting air pollutants, called ..,emission, which

C有两个问题
1.called修饰谁，就近原则应该修饰 pollutants, 错误比较严重
2.which举例修饰对象千山万水，太远了，不如A好

orehin

同意，致命伤是called 修饰了pollutants

kadin5568576

明白，谢谢大侠

beiminghanxing

关于which的指代问题请看下帖，总结得非常好！！！！
http://forum.chasedream.com/GMAT_SC/thread-441459-1-1.html

gabbrielle

还是不明白，望NN指教

A：Originally ..., a technique called proton-induced X-ray emission, which can quickly analyze the chemical elements...

C: A technique ...pollutants, called proton-induced X-rray emission, which can quickly analyze the chemical elements...
OG对C的解释除了对called放置位置不对外，指出另一错误是“which incorrectly and illogically modifies emission.”
AC中which从句不都是放在proton-induced X-ray emission之后的么？为何A种which从句又不存在指代问题了呢？？？

coloryoung

我也还没有明白～～：（  called...不可以跳跃修饰A tehnique吗？？？

如果C,D的“which从句”之前添加一个"and"连词，是不是called修饰主语A technique就没有歧义了呢？？

请教大牛！

WO爱逍遥

同问 C中  WHICH    不也是修饰EMMISON    哪里错了？

xiangxiaolv

1、“proton-induced X-ray emission”这一串是emmison的名称
2、你理解为WHICH修饰EMMISON也没有问题 ，因为technique和emmison是同一个物质

情未浓

我有个小疑问，（虽然对选择答案没啥影响）CDE的解释中说"Called proton-induced X-ray emission should not be set off by commas"
这是为什么啊？？