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从进化的历史看，各类动物都比人类出现得早，人类是动物进化的最高级阶段，从这个意义上说，没有动物就不可能有人类。同时，由古代类人猿进化成人类以后，人类生活所需要的一切都直接或间接地与动物有关，离开了动物，人类就无法很好地生存。动物与人类相互依存，保护动物就是保护我们自己。
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