It knowledge is power, Sir Francis Bacon wrote in 1579, perhaps creativity ca be describe

It knowledge is power, Sir Francis Bacon wrote in 1579, perhaps creativity ca be described as the ability to use that power.
A. what; and
B. as; then
C. which; and
D. that; then

A. what; and(答案→)B. as; thenC. which; andD. that; then解析：as意为“像”，引起状语从句；由句子意义可知，then为“那么”之意。

我好好复习下