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ren ti de shi jie zhi zui
Pages: 35
Year: Issue:  Z2
Journal: Required Reading for Junior Middle School Students

Abstract: <正>世界上最卓越的"水泵" 人的心脏可以连续工作一百多年,每天泵出血液6-8吨,三年半时间所泵出的血液足可浮起一艘万吨巨轮。世界上最小的"电台"科学家们研究发现,每一个人体细胞都是一部微型电台,它能发射出频率为
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