某患女性,30岁,
面可见很深的龋洞,龋损部位色黑,遇冷热刺激有酸痛感
口腔中最重要的致龋菌()
A.变形链球菌
B.血链球菌
C.乳杆菌
D.韦荣菌
E.牙龈卟啉单胞菌
参考答案:A
—Has the little girl passed ______ P.E. test?
—She has tried twice, and the teacher will allow her to have _____ third try.
A.the; 不填
B.a; the
C.the; a
D.the; the
饲料中长期缺碘可引起()
A.甲状腺功能亢进
B.甲状腺组织萎缩
C.单纯性甲状腺肿
D.腺垂体功能减退