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1.消化系统由哪些器官所组成? 2.牙的形态结构有何特点? 3.三对大唾液腺的位置与开口部位? 4.试述咽的分部与交通? 5.食管分哪几部分?三个狭窄位于何处?
1. What kind of digestive system consists of organs? 2. What are the characteristics of dental structure? 3. Three pairs of large salivary glands and open parts of the site? 4. Trial pharyngeal division and traffic? 5. Esophageal which part Where are the three narrows?