We will have a picnic if it tomorrow. [ ]
A. don't rain
B. doesn't rain
C. won't rain
答案:B
引起脓胸最常见的病原菌是
A.肠球菌B.肺炎链球菌C.溶血性链球菌D.流感嗜血杆菌E.金黄色葡萄球菌
具有祛风痰,止痉,解毒散结功效的药物是
A.半夏
B.白芥子
C.禹白附
D.旋覆花