So fast it is difficult for us to imagine its speed.? A. does light travel that

So fast _____it is difficult for us to imagine its speed.?

A. does light travel that                 B. light travels that

C. as light travels that                  D. with light travels

试题答案

A

解析:

so—that，句式当so+adj./adv.置于句首，句子要倒装。