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The mouth is the initial part of the digestive organ（）
The mouth is the initial part of the digestive organ（）
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 liver isn’t the digestive gland（）
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The lips of sheep is thin and flexible. There is a obvious longitudinal groove in the middle part of the upper lip. An area of hairless hair between two nostrils is known as nasoscope（）