急性心肌梗死最常见的心律失常是（）
A.房室传导阻滞
B.心房扑动
C.室性早搏及室性心动过速
D.阵发性室上性心动过速
E.窦性停搏
参考答案：C
.– She was in clas on Friday afternoon, but no one has seen her since.
---She _____ an accident.
A．might have
B．might have had
C．may have
D．ought to have had
十枣汤服用的最适宜时间是（）
A.饭前服
B.饭后服
C.睡前服
D.不拘时服
E.清晨空腹服
