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刘浩冉2019.10.28作业

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刘浩冉 妈妈
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Published on 28 Oct 2019 / In Education environment

哺乳动物

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韩老师
韩老师 6 years ago

穿山甲是在母体内发育的完全才产出的,出生后是通过母乳获取营养,所以是哺乳动物哦!

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