GWD-10-Q2: GWD-11-10 弱弱的问一句。。。

踏雪无痕1989

GWD-10-Q2: GWD-11-10
<<Marconi’s conception of the radio was as a substitute for the telephone, a tool for private conversation; instead, it is >>precisely the opposite, a tool for communicating with a large, public audience.

A.    Marconi’s conception of the radio was as a substitute for the telephone, a tool for private conversation; instead, it is
B.    Marconi conceived of the radio as a substitute for the telephone, a tool for private conversation, but which is
C.    Marconi conceived of the radio as a tool for private conversation that could substitute for the telephone; instead, it has become
D.    Marconi conceived of the radio to be a tool for private conversation, a substitute for the telephone, which has become
E.    Marconi conceived of the radio to be a substitute for the telephone, a tool for private conversation, other than what it is,

本题选C
关于a tool，请问各位大侠

同位语怎么修饰的？是就近呢？还是修饰句子的主语？

Jackjokes

简单的说 A of B that....  修饰的是A

踏雪无痕1989

介里有关于同位语的题目，但是没有一个定论瓦。。。。

http://forum.chasedream.com/GMAT_SC/thread-416605-1-97.html

这个在百度上面看到的：
同位语从句是名词性从句(主语从句、表语从句、宾语从句、同位语从句)中的主要从句之一，从句作同位语表示与之同位的名词(短语)的实际内容，它的作用相当于名词，对前面的名词(短语)加以补充说明或进一步解释，相当于一个表语从句，它们之间的关系是同位关系，即主表关系。