下列解剖标志中哪个不属于口腔前庭范围（）
A.唇系带
B.颊系带
C.舌系带
D.颊侧翼缘区
E.上颌结节
参考答案：C
Because of the limited time, he swallowed the food and hurried to the work place.
A. fastened B. engulfed C. hurried D. quickened
