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Popular philosophy 哲学史讲演录
Popular philosophy 哲学入门:苏菲的世界
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Popular philosophy 中华学生百科全书:结识动物
Posted on 2010-08-25
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一提到动物,我们立刻可以想到顽皮的猴子、可爱的大象、憨态可掬的 熊猫、俏皮的卷毛狗、凶猛的狮子和老虎、令人毛骨悚然的蛇和鳄鱼以及各 种美丽的飞鸟等等。在动物“大家庭”中,大约有 150 多万个种类。面对这 样多的动物,若没有一个统一的科学的标准将它们区分开,人类对动物的认 识将陷于杂乱无章的境地,无法对动物进行调查和研究,更谈不上充分利用 动物资源和防治有害动物了。动物是怎样分类的,又分成哪些类群呢?
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