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Library of Congress
The Library of Congress. The Library of Congress is the nation\'s oldest federal cultural institution, and it serves as the research arm of Congress. It is also the largest library in the world, with more than 120 million items. The collections include books, sound recordings, motion pictures, photographs, maps, and manuscripts
点击进入 - 2015-03-20 - 收藏
Welcome to the USGS - U.S. Geological Survey
Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment.
点击进入 - 2014-02-04 - 收藏
Pinterest图片分享网
Pinterest是全球最大的图片社交分享网站。Pinterest采用的是瀑布流的形式展现图片内容，无需用户翻页，新的图片不断自动加载在页面底端，让用户不断的发现新的图片。...
点击进入 - 2013-11-17 - 收藏
Grooveshark官网
Grooveshark（鲨客）是一个在线音乐分享与搜索平台，提供免费在线收听音乐服务，用户可以输入关键字进行相关歌曲搜索，如：歌手、歌曲名称、音乐类型等，大部分歌曲都可以畅听无阻。ScoreBig has joined forces with Grooveshark to help its listeners hear their forite artists live. Pay less and get better concert tickets with no fees at ScoreBig
点击进入 - 2015-12-02 - 收藏
Central Intelligence Agency
Welcome to the CIA Web Site — Central Intelligence Agency www.cia.gov
点击进入 - 2014-02-04 - 收藏
Khan Academy
Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.
点击进入 - 2014-05-22 - 收藏
Huffington Post
The destination for news, blogs and original content offering coverage of US politics, entertainment, style, world news, technology and comedy - Huffington Post
点击进入 - 2015-09-03 - 收藏
MetroLyrics
MetroLyrics is a searchable lyrics database featuring 1,000,000+ song lyrics from 20,000 artists. Use MetroLyrics to find your forite song lyrics.
点击进入 - 2014-11-28 - 收藏
TechCrunch科技
TechCrunch is a leading technology media property, dedicated to obsessively profiling startups, reviewing new Internet products, and breaking tech news.
点击进入 - 2013-11-17 - 收藏