20-1除了昆虫，还有什么动物能变态发育？

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欢迎走进“100个秘密科普馆”，为孩子们打开通往知识世界的大门！100个秘密系列持续更新中，每张专辑100个小知识，揭密孩子们心中的小问号。

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昆虫的100个秘密 | 3-6岁儿童科普知识