一个题目不太理解

billyxiangLi

Q15:

The city has proposed a number of water treatment and conservation projects the cost of which raises water bills high enough so that even environmentalists are beginning to raise alarms.

the cost of which raises water bills high enough so that

at a cost raising water bills so high that

at a cost which raises water bills high enough so

whose cost will raise water bills so high that

E   whose cost will raise water bills high enough so that

答案：D

我认为BD都正确啊，有谁帮忙给个介绍，十分感谢了。

[此贴子已经被作者于2005-11-15 12:36:08编辑过]

laihong

在短语和从句修饰都对时，ETS用从句