It is interesting to look back in history,and to try to guess__colours meant to the first humans.
问题描述：
It is interesting to look back in history,and to try to guess__colours meant to the first humans.
A./ B.that C.what D.which
一楼的能说下原因吗？句意是什么？
答
建议选C啦.就是去猜猜色彩对最早的人们意味着什么