下图是鸟卵的结构图请据图回答1写出下列结构的名称并把其相应的功能字母写在前面的横线上1 A保护还能供给胚胎�育所需养料和 Template




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tomski下图是鸟卵的结构图请据图回答1写出下列结构的名称并把其相应的功能字母写在前面的横线上1 a保护还能供给胚胎�育所需养料和 coloring