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The tooth is the hardest organ in an animal and has the function of feeding and chewing（）
The tooth is the hardest organ in an animal and has the function of feeding and chewing（）
A.正确
B.错误
正确答案：正确
标签：
动物解剖生理
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The tongue is composed of striated muscles. It is divided into three parts, the tip, the body and the rear（）
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The common channel for digestion and respiration is the pharynx（）