在脊椎动物中,最低等的动物类群是()A.鱼类 B.哺乳类 C.腔肠动物 D.节肢动物
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![在脊椎动物中,最低等的动物类群是()A.鱼类 B.哺乳类 C.腔肠动物 D.节肢动物](/uploads/image/z/13801799-47-9.jpg?t=%E5%9C%A8%E8%84%8A%E6%A4%8E%E5%8A%A8%E7%89%A9%E4%B8%AD%2C%E6%9C%80%E4%BD%8E%E7%AD%89%E7%9A%84%E5%8A%A8%E7%89%A9%E7%B1%BB%E7%BE%A4%E6%98%AF%EF%BC%88%EF%BC%89A.%E9%B1%BC%E7%B1%BB+B.%E5%93%BA%E4%B9%B3%E7%B1%BB+C.%E8%85%94%E8%82%A0%E5%8A%A8%E7%89%A9+D.%E8%8A%82%E8%82%A2%E5%8A%A8%E7%89%A9)
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