新题做完了，又出现疑惑了。。。

tibetboy

以下是引用ncraig在2005-2-28 21:20:00的发言：

2In) the United States, the (leading) butter-producing (states which) are Wisconsn,California,(and) Minnesota.

请问C选项的state是否不可数？

应该去掉which吧？

小I爱漂漂

4:In geometry, an ellipse may be defined as the locus of all points,........distances from two fixed points is constant.

A:which as the sum of

Bf the sum which

C:the sum of whose

D:whose sum that the

这T是选C吗？麻烦确认一下！谢谢！

[此贴子已经被作者于2005-3-4 15:05:40编辑过]

ncraig

恩~是的~：）