With apparentness of elder period, studies on them have more and more social and realistic significances. Firstly, thesis does theoretical research to solve epistemological problems.
随着老年期的显性化,对其研究具有重要的社会和现实意义。首先进行理论探讨,以解决认识论问题。
简答网 · 双语娱乐资讯
简答网 · 高考英语
简答网 · 初中英语作文
简答网 · 四六级英语