[求助]快考试了,求助T3-41

T-3-Q41.
            

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.

1. Marconi’s conception of the radio was as a substitute for the telephone, a tool for private conversation; instead, it is

2. Marconi conceived of the radio as a substitute for the telephone, a tool for private conversation, but which is

3. Marconi conceived of the radio as a tool for private conversation that could substitute for the telephone; instead, it has become

4. Marconi conceived of the radio to be a tool for private conversation, a substitute for the telephone, which has become

5. Marconi conceived of the radio to be a substitute for the telephone, a tool for private conversation, other than what it is,

答案是E  A为什么不对呢

instead, it is...

这个it优先指代主句主语（Marconi's conception). 用Marconi's conception代替it就是：

instead, Marconi's conception is precisely the opposite, a tool for communicating with a large, public audience.

这就不对了。应该是radio是一个tool for communicating with a large, public audience. 

conception is a substitude 肯定不对吧。

选 C 吧。

A and E are both wrong.

For A, LS is right, conception is not a substitute.

For E, other than what it is, precisely the opposite 不知所云。。。