题型:问答题 23. Every Monday morning, all the teachers and students in our school stand at ____ as our national flag is raised.A.attentionB.attentionsC.at easeD.Attentively 查看答案
题型:问答题 26岁女性患者,因半年来右上后牙龈发现小包,曾肿痛2次,流出少许成液,要求诊治,检查时最可能见到 ()A.多个牙齿松动B.多个龋坏牙齿C.牙龈处多处口腔溃疡D.龋齿和龈瘘E.变色牙和口腔溃疡 查看答案