题型:判断题 —What was the party like? —Wonderful. It’s years_______I enjoyed myself so much. A.afterB.beforeC.whenD.since 查看答案
题型:判断题 使用固定矫治器的治疗过程中或拆除矫治器后可能会在牙齿的唇(颊)侧牙面上发现形态不规则的白垩色斑块,这种斑块是()A.釉质脱钙 B.白色斑块 C.正畸粘结剂的残留 D.再矿化斑块 E.继发龋 查看答案