巴拉克·奥巴马的演讲技巧_英语论文.doc

People named the 21st century "speech era". They not only regarded public presentation as the core event of the society, but also believe it is one of the necessary competencies that contemporary people should master...

分类：英语论文 | 字数：6553 | 上传日期：2014-08-22

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