求助一道gwd，谢谢

跟秋香打奔儿

GWD3-Q10:

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

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

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

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

E.reflects so that little of the polar ice melts during the summer; if it did
此题的答案是B
问题：句子the temperatures are so cold和句子the ice cap is reflective并列对吧，那么按照省略的来说应该吧be动词is省略掉啊？
我就是直接选的c

jinghe

Temperatures 和ice cap 是在说2个事物, 所以第二个noun “ice cap” 的be动词不能省略. 而且, temperatures are so cold 和ice cap is so reflective 必须平行对称. 所以答案是B.

跟秋香打奔儿

两个事物并列的时候be动词就不省略么

jinghe

在这道题中be 动词不能省略.

跟秋香打奔儿

为什么这到底不能省略啊？