4. 下列何者非口瘡性潰瘍(Aphthous Ulcer)的好發位置？
(A)硬腭 (Hard Palate)
(B)頰黏膜 (Buccal Mucosa)
(C)下唇 (Lower Lip)
(D)舌側 (Lateral Border of the Tongue)

1. 題目解析這道題目詢問的是口瘡性...