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腾讯于1998年11月成立，是一家以互联网为基础的平台公司，通过技术丰富互联网用户的生活，助力企业数字化升级。我们的使命是“用户为本 科技向善”。Founded in 1998, Tence……

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Office是由Microsoft(微软)公司开发的一套基于 Windows 操作系统的办公软件套装。office办公软件教程网是专业的Office办公软件学习和原创Office教程分享网站……

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UNICEF works in more than 190 countries and territories to reach the most disadvantaged childre……

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The ACT test is a curriculum-based education and career planning tool for high school students ……