求NN们指导！！

kathyontheway

各位大牛GG们。。。。我非常困惑每一次的CR的黑脸题都没法做对，甚至就算是已经看到答案了还是觉得答案是错的。。。
请各位nn们给我推荐一下训练黑脸题的方法吧啊啊啊啊。。。。。。

另外，请看底下这题是不是答案错了。。。我真觉得是答案错了。。。

Delta products, Inc., has recently switched at least partly from older technologies using fossil fuels to new technologies powered by electricity.The question has been raised whether it can be concluded that for a given level of output, Delta’s operation now causes less fossil fuel to be consumed than it did formerly.The answer, clearly, is yes, since the amount of fossil fuel used to generate the electricity needed to power the new technologies is less than the amount needed to power the older technologies, provided that the level of output is held constant.



In the argument given, the two boldface portions play which of the following roles?

1. The first identifies the content of the conclusion of the argument; the second provides support for that conclusion.
   
2. The first provides support for the conclusion of the argument; the second identifies the content of that conclusion.
   
3. The first states the position that the argument opposes; the second states the conclusion of the argument.
   
4. Each provides evidence that calls the conclusion of the argument into question.
   
5. Each provides support for the conclusion of the argument.
   
   答案选e,可我觉得明显选A啊。。。。。
   
   谢谢了！！！！！感激不尽。。。。。
   

ruudarly

第一个明显不是conclusion的内容啊 conclusion 是Delta’s operation now causes less fossil fuel to be consumed than it did formerly