It is accepted by everyone that knowledge is the most valuable _______ for human beings. A. standard...
2022-11-11 01:15:44 72次 2017年初中毕业升学考试（山东泰安卷）英语（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
It is accepted by everyone that knowledge is the most valuable _______ for human beings.
A. standard B. treasure C. invention D. instruction
本题链接：
