请教涛涛gwd31-9-41

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,

答案选E，我选C

理由conceive of ... as ... 比 conceive of ... to be ...好，  what it is多余

是不是可以从对比结构来判断

Marconi conceived of the radio to be a substitute for the telephone, a tool for private conversation, other than what it is,precisely the opposite, a tool for communicating with a large, public audience.

Conceive（From Oxford Dictionary）
[I, Tn] become pregnant (with a child) 怀孕; 受孕: She was told she couldn't conceive. 她得知自己不能怀孕. * The child was conceived on the night of their wedding. 那孩子是在他们新婚之夜怀上的.
[Ipr, Tn, Tf, Tw, Cn.n/a] ~ of sth; ~ sth (as sth)
                form (an idea, a plan, etc) in the mind; imagine sth 想出（主意、计划等）; 构思; 想像某事物: It was then that I conceived the notion of running away. 就在那时我产生了逃跑的念头. * I cannot conceive (ie do not believe) that he would wish to harm us. 我不能想像（不相信）他会伤害我们. * I cannot conceive why you allowed the child to go alone, ie I think you were very foolish to allow it. 我真想不通你为什么让孩子一个人走（我认为你这样做很蠢）. * The ancients conceived (of) the world as (being) flat, ie They thought it was flat. 古人认为地球是扁的.

Longman:

conceive of something/somebody as something
Language may be conceived of as a process which arises from social interaction.