GWD 11-29, 居然没讨论过！

fatcat2004

Q29:

Antarctica receives more solar radiation than does any other place on Earth, yet the temperatures are so cold and the ice cap is reflective, so that little polar ice melts during the summer; otherwise, the water levels of the oceans would rise 250 feet and engulf most of the world’s great cities.

is reflective, so that little polar ice melts during the summer; otherwise,

is so reflective that little of the polar ice melts during the summer; were it to do so,

so reflective that little polar ice melts during the summer, or else

reflective, so that little of the polar ice melts during the summer, or

reflects so that little of the polar ice melts during the summer; if it did

大家一致认为应该选B吗？可是我觉得C明显是正确的呀！再这里，reflective 前面的is是可以省略的。

Tono

gwd里第二次碰到了,虽然作对了,但是还是不知道为什么C错了

carolhide

为什么可以省略is，两句句子平行，前后的主语都不相同了，谓语反而能省略？