合并肺部感染的重症肌无力病人，针对其肺部感染应选用（）
A.青霉素类
B.丁胺卡那
C.四环素
D.庆大霉素
E.磺胺类药物
参考答案：A
______ to be old enough to live alone, Mary was sent abroad to study by her parents.[ ]
A. Considered
B. To consider
C. Considering
D. Being considered
抗甲状腺药物治疗最危险的副作用是（）
A.甲状腺癌变
B.诱发甲亢危象
C.粒细胞减少
D.突眼恶化
E.永久性甲状腺功能减退
