单项选择题 牙体缺损的治疗计划包括:医生个人制定的治疗设计、治疗现有的疾病、预防可能发生的疾病、恢复功能、提高美观。A.对B.错
单项选择题 选择正确答案。Она .................... в командировку на один день раньше.( )
单项选择题 The ethical obligation of an audience to listen to a speaker courteously and attentively is less important in speech class than for speeches outside the classroom. ( ) A. 对 B. 错