Time is of no importance to great thoughts, are as fresh today as when they first passed through their authors' minds, ages ago.
A. what
B. that
C. which
D. where
网友回答
A. what
B. that
(答案→)C. which
D. where
解析：C 考查非限制性定语从句。句意：对于伟大的思想来说时间没有任何的意义，这些思想在多年前第一次在它们作者的头脑中闪过的时候和现在一样新鲜。先行词是great thoughts，which引导非限制性定语从句，补充说明先行词，which在从句中作主语。