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ji nian , zhong shi wu de zhi qin
Author(s): 
Pages: 3
Year: Issue:  1
Journal: Knowledge is Power

Abstract: “厚厚冰雪溶解,眼看梅花吐蕊,漫漫长夜过去,听到一声鸡啼.”正如这首全球华人熟知的贺年歌曲所唱的那样,报晓雄鸡的啼鸣,曾被农业社会里的人们当作一天的开始,继而被赋予了破旧立新的含义. 对于生活在现代大都会里的人们来说,鸡或许是最熟悉而又最陌生的动物.如果把全世界的家鸡按人平均分配,那么每个人大约可以分到3只鸡.家鸡为我们的生活提供了重要的食物来源:鸡肉和鸡蛋.除此之外,家鸡还有更多精彩、丰富的科学“爆”点.
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