单项选择题

Respiratory portion consists of:()

A.Terminal bronchioles and their branches to alveoli
B.Respiratory bronchioles and their branches to alveoli
C.Alveolar ducts and their branches to alveoli
D.Bronchioles and their branches to alveoli
E.All alveoli
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问答题

明朝最初的都城在南京?

答案: 1.错误
2.正确
正确答案:正确
明朝,是一个由汉族建立的大一统王朝,共传十六帝,共计276年...
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