通过选择性抑制抗原-抗体结合所引起的过敏介质释放而平喘的药物是
A．氨茶碱
B．色甘酸钠
C．肾上腺素
D．沙丁胺醇
E．二丙酸氯地米松
参考答案：B
In the office I never seem to have time until after 5: 30 pm,_____ many people have gone home. [ ]
A. that
B. which
C. whose time
D. by which time
关于单纯型中耳炎的治疗，说法错误的是（）
A.常用3％双氧水洗耳后抗生素滴耳
B.忌用氨基糖苷类抗生素滴耳
C.抗生素粉剂用于脓多时效果很好
D.避免滴用有色药液
E.忌用含酚类、砷类腐蚀剂
