Time is of no importance to great thoughts， are as fresh today as when they first passed through thinkers' minds ages ago.
A. what
B. that
C. which
D. where
网友回答
A. what
B. that
C. which
D. where
解析：句意：对于伟大的思想来说，时间是无关紧要的，那些伟大的思想在今天依然和多年前它们第一次进入思想家脑海时一样鲜活。根据句意并分析句子成分可知，此处为非限制性定语从句，且从句缺少主语，所以选which。