问题描述：
我有一个阅读理解的题
这道题是2004年河南专升本英语试卷的阅读理解passage4 46题：the orgin of languageis _______
A:taeasure handed down from the past B :a matter that is hidden or secret
C:a problem not yet solved D:a question diffcult to answer
文章的原文出处：how men first learned to invent words is unknown;in other words ,the origin of language is a mystery.
这道题是2004年河南专升本英语试卷的阅读理解passage4 46题：the orgin of languageis _______
A:taeasure handed down from the past B :a matter that is hidden or secret
C:a problem not yet solved D:a question diffcult to answer
文章的原文出处：how men first learned to invent words is unknown;in other words ,the origin of language is a mystery.
问题解答：
我来补答展开全文阅读