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da guan yuan
Author(s): 
Pages: 64-65
Year: Issue:  Z2
Journal: Required Reading for Junior Middle School Students

Keyword:  科学家节肢动物螨虫足迹化石演化过程行星天文学发现星系鼠标设计师;
Abstract: <正>弧形鼠标韩国设计师设计了一款弧形鼠标,能在腿上、沙发上等不平表面上使用。最古老螨虫科学家在琥珀中发现了两只小螨虫的化石,这两只螨虫的化石已有2.3亿年的历史,打破了最古老节肢动物琥珀化石的纪录。发现新型天体科学家公布了在宇宙中发现的新"物种"。这是一种超热的并被尘埃遮蔽的天体,可能是星系演化过程中
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