婴幼儿肺炎的高危因素()
A．营养不良
B．维生素D缺乏性佝偻病
C．低出生体重
D．先天性心脏病
E．免疫缺陷
参考答案：A, B, C, D, E
— Many species are in danger of dying out because of a________of habitat.
— I couldn't agree more.We must take action for them as well as for ourselves. [ ]
A. waste
B. possession
C. pollution
D. lack
扁桃体切除术的适应证是（）
A.并发扁桃体周围脓肿
B.扁桃体Ⅱ度肿大
C.病灶性扁桃体
D.白喉带菌者保守治疗无效
E.扁桃体良性肿瘤
