代词指代 大家火速前来啊……

justinlee17

谢谢整理！辛苦

justinlee17

response to higher oil prices, window manufacturers have improved the insulating capability of their products; their windows have been built to conserve energy, and they are.
A have been built to conserve energy, and they are
B are built to conserve energy, and they have
C are built to conserve energy, and they do
D are being built to conserve energy, and they have
E had been built to conserve energy, and they are

答案C。
楼主看下这个句子的they指代什么？我觉得已经有their指代manufacturer了，they应该和their指代一个东西啊，但我觉得是windows.

justinlee17

enkyklios 发表于 2013-7-16 19:26
类似的；it和its也可以指代不同
According to a recent poll, owning and living in a freestanding house ...

这个句子也看过几遍了！没想过这个问题！谢谢楼主！