OG13 SC107疑问

foolqq

107.        While it costs about the same to run nuclear plants as other types of power plants, it is the fixed costs that stem from building nuclear plants that makes it more expensive for them to generate electricity.
A.        While it costs about the same to run nuclear plants as other types of power plants, it is the fixed costs that stem from building nuclear plants that makes it more expensive for them to generate electricity.
B.        While the cost of running nuclear plants is about the same as for other types of power plants, the fixed costs that stem from building nuclear plants make the electricity they generate more expensive.
C.        Even though it costs about the same to run nuclear plants as for other types of power plants, it is the fixed costs that stem from building nuclear plants that makes the electricity they generate more expensive.
D.        It costs about the same to run nuclear plants as for other types of power plants, whereas the electricity they generate is more expensive, stemming from the fixed costs of building nuclear plants.
E.        The cost of running nuclear plants is about the same as other types of power plants, but the electricity they generate is made more expensive because of the fixed costs stemming from building nuclear plants.

答案是B，但是the cost of running nuclear plants is about the same as for other types of power plants中的for用得对吗？不应该是用of才对称吗？

foolqq

我自己弄明白了，as for = with regard to [参见http://www.merriam-webster.com/dictionary/as%20for]

the cost of running nuclear plants / is / about the same / as for other types of power plants.
下划线部分整个是一个状语，修饰整个句子。这个状语不要求对称。

echoqian1217

赞一个！！！