下述关于固有口腔境界的描述,错误的是()
A.前界为牙列
B.上界为腭
C.下界为舌下区
D.两侧为颊
E.后界为咽门
参考答案:D
HIV病毒主要存在于病人的()
A.血液
B.精液
C.唾液
D.眼泪
E.脑脊液
— Look! You’ve made the same mistake again!
— Oh, not again! _________ such a mistake.
A.I will always make
B.I’m always making
C.I’ve always made
D.I always made