zxppx 发表于 2013-5-12 22:27
107. 比较对象是costs of running nuclear plants和costs of other types of power plants. B选项在这里用t ...
zxppx 发表于 2013-5-13 07:36
A选项中的: it is the fixed costs that stem from building nuclear plants that makes it more expensi ...
zxppx 发表于 2013-5-13 07:36
A选项中的: it is the fixed costs that stem from building nuclear plants that makes it more expensi ...
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