如图鸡受精卵内部结构示意图据此回答问题1从图中可以看出鸡的生殖方式为 通过孵化图中 可以�育成小鸡图中�的作用主要是为胚胎 Template




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tomski如图鸡受精卵内部结构示意图据此回答问题1从图中可以看出鸡的生殖方式为 通过孵化图中 可以�育成小鸡图中�的作用主要是为胚胎 coloring