治疗军团菌首选的药物是()
A.头孢他啶
B.头孢拉定
C.甲硝唑
D.氯霉素
E.红霉素
参考答案:E
As students, we _______ study hard to make our country more beautiful and stronger. [ ]
A. should
B. may
C. can
D. could
当怀疑以下哪种肺部疾病时,支气管镜检查最有意义
A.支气管扩张症B.肺脓肿C.浸润型肺结核D.中心型肺癌E.慢性支气管炎