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da guan yuan
Author(s): 
Pages: 60-61
Year: Issue:  Z2
Journal: Required Reading for Junior Middle School Students

Abstract: <正>初始宇宙呈液态科学家的最新试验结果表明,宇宙在最初形成的几微秒内呈液态,而不是一直认为的炙热气体。人类"寻根"计划美国将启动人类"寻根"计划,以帮助基因学家们解答人类如何从非洲扩散到全球的
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