请用英语简单的介绍一下上海世博会,一百二左右词汇.
问题描述：
请用英语简单的介绍一下上海世博会,一百二左右词汇.
答
World Expositions are galleries of human inspirations and thoughts. Since 1851 when the Great Exhibition of Industries of All Nations was held in London, the World Expositions have attained increasing...