33.唐氏症(Down syndrome)的患童約 15%有頸椎曲度異常(Misalignment of cervical vertebra),其中最好發在那
一節頸椎?
(A)C1
(B)C2
(C)C3
(D)C4
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統計: A(296), B(215), C(169), D(101), E(0) #2942880
統計: A(296), B(215), C(169), D(101), E(0) #2942880