(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. 这是对的选项...最后的they指的什么啊？还有as后面为什么一定加for啊？ 求各位大神解答，不胜感激
While the cost of running nuclear plants is about the same as(the cost省略) for other types of power plants, the fixed costs that stem from building nuclear plants make the electricity they (指的就是nuclear plants)generate more expensive。 尽管运转核电站的成本和其他类型的发电站的（成本）是一样的，来自于建造核电站的固定成本使得（核电站）生产的电 价钱更高。
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发表于 2013-3-10 15:35:42
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