问题
单项选择题 A2型题
患牙釉质上出现不规则的凹陷，呈黄色改变。镜下见釉质发育不良，但釉质表层过度矿化，釉柱方向不规则，釉牙本质界的弧形结构较正常牙更加明显。该疾病是（）
A.氟牙症
B.四环素牙
C.Tumer牙
D.先天性梅毒牙
E.釉质浑浊症
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
患牙釉质上出现不规则的凹陷，呈黄色改变。镜下见釉质发育不良，但釉质表层过度矿化，釉柱方向不规则，釉牙本质界的弧形结构较正常牙更加明显。该疾病是（）
A.氟牙症
B.四环素牙
C.Tumer牙
D.先天性梅毒牙
E.釉质浑浊症
参考答案：A
小题1:Susan is ______ years old. A. twelve B. thirteen C. fourteen 小题2:_______ and ______ have big eyes. A. Susan; John B. John; Nick C. Susan; Nick 小题3:John’s pants are _____ and Nick’s pants are _______. A. pink; yellow B. white; blue C. red; purple 小题4:Susan’s favorite food is _______ and John’s is _______. A. fish; chickenB. fish; hamburgers C. chicken; hamburgers 小题5:We know _________ from the form(表格). A. Susan, John and Nick all come from the same country(国家). B. Susan is in a red skirt and black shoes. C. Nick’s favorite animals are monkeys. |