这个好像没讨论过，没查到。

麻烦大家也帮忙看看。

4.  

Nikola Tesla, the inventor of alternating current, because he was excited with the prospects of harnessing Niagara Falls for producing electric power, he predicted in the mid-1890's that electricity generated at Niagara would one day power the streetcars of London and the streetlights of Paris.

(A) Nikola Tesla, the inventor of alternating current, because he was excited with the prospects of harnessing Niagara Falls for producing electric power, he

(B) The prospects of harnessing Niagara Falls to produce electric power was exciting to Nikola Tesla, the inventor of alternating current, and so he

(C) Excited about the prospects of harnessing Niagara Falls to produce electric power, Nikola Tesla, the inventor of alternating current,

(D) Nikola Tesla, the inventor of alternating current, excited about the prospects of harnessing Niagara Falls for the production of electric power and

(E) The inventor of alternating current, excited with the prospects of harnessing Niagara Falls for producing of electric power, Nikola Tesla

我选了A，看了半天也没觉得A有什么地方长的不好看啊

答案是C

A里面的he指代什么呢？

Nikola Tesla, ... he

两个主语

中间部分是修饰：because加在同位语后面也不是很好

有没有人评价一下C和D 阿？

C似乎改变了原句的重心阿~~，D在语法上似乎没有问题，只是逻辑上似乎有点不对劲，谁来说说？

 A: because he...作插入成份，拿掉后的结构为Nikola Tesla, the inventor of alternating current, he.....

he 前面的内容变成了孤独结构，什么成份也做不了。

B：and 连接两个句子，要求两个句子形式和内容上对称，这里明显不对称。

C：正确，没有改变原重心，主句仍是未划线部分，并且避免了AB的错误。

D：and 前的句子没有谓语，excited...分词短语修饰Nikola Tesla

E:the inventor of alternating current是同谓语，excited with...修饰同谓语，不对