麻醉期间引起P波突然消失的心律失常多见于（）
A.室性心动过速
B.结性心律
C.Ⅰ度房室传导阻滞
D.心脏骤停
E.心室纤颤
参考答案：B
— The weatherman on the news said it would rain later this afternoon.
— Well, I ____ take my umbrella along with me today. [ ]
A. can
B. may
C. must
D. could
语体
