患者,20岁,女性,诊断为青少年牙周炎,如果应用抗生素治疗,最佳选择是()。
A.四环素
B.甲硝唑
C.麦迪霉素
D.非甾体类抗炎药
E.牙周宁
参考答案:A
His teacher often tells us _____ much time _____ TV.[ ]
A. not to spent; watch;
B. to not spend; watching;
C. don't spend; watch;
D. not to spend; watching
加工余量的确定