49 吞嚥時食物殘留於咽部溝槽中(depression on pharynegeal wall),下列何者是主要的原因?
(A)喉部上抬不足(reduced laryngeal elevation)
(B)咽部疤痕組織(scar tissue)
(C)喉部閉合不全(reduced laryngeal closure)
(D)舌根基底後移不足(reduced tongue base retraction)
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統計: A(124), B(367), C(17), D(63), E(0) #2418934
統計: A(124), B(367), C(17), D(63), E(0) #2418934