我国卫生部推荐治疗轻型小儿肺炎首选抗生素为( )。
A.青霉素B.氨苄西林C.阿莫西林D.头孢氨苄E.复方甲基异唑
参考答案:D
解析:[知识点] 肺炎的治疗原则
Mr. Black’s car is broken. So he has to go ____ his bike to school.
A.by
B.on
C.with
D.in
菌斑在牙面上呈现为()
A.透明无色,一般不易查见
B.棕黄色,易于识别
C.浅黄色,可以查见
D.粉红色,易于查见
E.与牙石相对