[求助]ＧＷＤ17 14想的头疼

Whereas lines of competition are clearly defined in the more established industries, in the Internet industry they are blurred and indistinct, as companies that compete one day may be partners the next.

1. Whereas lines of competition are clearly defined in the more established industries, in the Internet industry they are blurred and indistinct, as companies that compete
2. Although the lines of competition are clearly defined in industries that are more established, they are blurred and indistinct in the Internet industry, as competing companies
3. The lines of competition are clearly defined in the more established industries, unlike the Internet where they are blurred and indistinct, as companies that compete
4. Unlike more established industries, where the lines of competition are clearly defined, they are burred and indistinct in the Internet industry, as companies that compete
5. Unlike more established industries, with clearly defined lines of competition, those of the Internet industry are blurred and indistinct, as competing companies

答案是B。那就成了competing companies one day may be partners the next可以这么说吗？我选了A，C D E unlike 不平行。A好像没什么问题阿？请大家给看看。

as companies that compete

是不是有点怪怪的，我对固定搭配，词的使用不太熟，说不出所以然，但是应该是compete with each other更顺吧...好像也差一点儿...

而且GMAT好像非常不喜欢把状语加在主语前面，尤其是在助于用的是代词的时候，他会觉得离其只带对象太远了

competing companies（as从句主语） one day may be partners the next

希望能帮到你

楼主确定这个题是选B么...我觉得是选A啊..

下面是从国外的一个forum上copy下来的，觉得很有道理

"Whereas" and "although" are both correct. We can't choose between A and B on the basis of these words.

The reference of the pronoun "they" is unambiguous in both A and B. It refers both logically and grammatically to the subject of the preceding clause "lines." We can't choose between A and B on the basis of this word either.

What makes B wrong is the phrase: "as competing companies one day may be partners the next." The separation of "competing" from "one day" confuses the intended meaning. In A, "companies that compete one day may be partners the next" is clear and logical.