List “课堂学习”Webdir Latest List
中文大百科网cyclopedia是一部在线的中文网络百科全书，涉及文化艺术、科学、人文地理、技术、人物、自然科学等多门学科，是一部比较全面的百科全书网站
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知名百科是一个知识分享及内容开放、自由的网络权威认知的百科全书。免费收录全球网络中英文知识百科信息。收录信息包括：艺术、人物、机构、教育、文化、科技、地理等，全民参与知名百科网的词条编辑，分享及贡献熟悉的领域科普知识平台。
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Best of History Web Sites aims to provide quick, convenient, and reliable access to the best history-oriented resources online in a wide range of categories and has been designed to benefit history teachers and their students; however, general history enthusiasts will benefit from the site as well. Ranked #1 by Google for history web sites, Best of History Web Sitesd receives upwards of 100,000 visitors per month.
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Knowledge Nuts是一个信息网站，秉承着“以最短的时间获得最丰富的知识”，包括差异、事实、误解三大版块，揭开人类存在的事实，事物之间的差异以及世人对事物的误解。Maximum learning with minimum reading! Knowledge Nuts was founded so you can find the information you want. When you want it. Fast.
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Skeptic\'s Dictionary致力于揭露超自然现象、神秘现象、替代医学等伪科学，帮助读者识别生活中各种伪科学与迷信。The Skeptic\'s Dictionary features definitions, arguments, and essays on hundreds of strange beliefs, amusing deceptions, and dangerous delusions. It also features dozens of entries on logical fallacies, cognitive biases, perception, science, and philosophy.
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Bartleby.com专注于经典和一般的参考作品。Reach your academic happy place with access to thousands of textbook solutions written by subject matter experts.
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Information Please包含在线词典，互联网百科全书，和历书参考。Infoplease is a free, authoritative, and respected reference for Internet users that provides a comprehensive encyclopedia, almanac, atlas, dictionary, and thesaurus.
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World Book is a leading publisher of nonfiction and mixed-genre children's book series, reference materials, and digital learning platforms. Education is World Book’s commitment and its editorial team is World Book’s strength. Each team member is dedicated to producing accurate and unbiased information by utilizing contemporary technological tools and following traditional practices of editorial excellence. For more than 100 years, World Book has promoted learning for the entire family through a range of products in which complex topics are concisely explained and vividly illustrated. An explicit goal is to help increase both reading fluency and comprehension in young readers. Encyclopedic content is updated continually and accessible 24/7 on a variety of devices. Innovative and readable, World Book will remain a trusted and useful resource at home, in the library, and in the classroom for years to come.
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Explore the fact-checked online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of objective articles, biographies, videos, and images from experts.由私人机构大英百科全书出版社所出版的英语百科全书，被认为是当今世界上最知名、最具权威的百科全书，是英语世界俗称的ABC百科全书之一。
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