That was ___was known___"the theory of relativity".

题目

That was ___was known___"the theory of relativity".
横线上填what like,what as;which like;which as哪一个?
为什么?

答案

what as

首先,根据第二空,known as 排除其他2个；
然后,你可以这样理解,这个句子的主干是
That was the theory of relatively.把中间的what was known as 当作插入语,以后碰到类似的题你就可以一样的填写了,不用思考罗