治疗房室传导阻滞的药物是：
A．异丙肾上腺素
B．肾上腺素
C．去甲肾上腺素
D．甲氧明
E．去氧肾上腺素
参考答案：A
When Bill Gates decided to create Microsoft, he________law at Harvard University.[ ]
A. studied
B. had studied
C. was studying
D. would study
钩体病治疗首剂使用大剂量青霉素治疗可出现（）
A.急性血管内溶血
B.二重感染
C.弥漫性血管内凝血
D.赫克斯海默尔反应
E.中毒性休克
