题目内容：

Discovering consists of seeing what everybody has seen and＿＿what nobody has thought.
A.think B.thinking C.thought D.to think

优质解答

你就看有一个and,词性应该和前面的并列语素一样,一看是seeing,就知道是用同样的thinking.
也可以这样理解,consists of后面跟的是组成的部分,是名词性的单词,see and thing 组成了discovery,必须要用动名词形式