请问GWD7-Q15， 关于whose的用法

COOKINGMAT

    

GWD7-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.
   D. whose cost will
     raise water bills so high that

请问这里的"whose"是指代“projects"吗？我一直都以为”whose"只可以指代“人的”。

谢过先！

vivian_chi

看来只好这么理解了，我前面也做到过类似的题，whose用来指代物，of which的变体。

easygoer

所有which可以修饰的whose同样可以修饰。

icever

whose    修饰人或物    the town whose water supply was contaminated

wangjieava23

呵呵，我今天看manhattan 也谈到这个问题：

whose 能修饰人或物
That只能修饰物