阵发性室上性心动过速的心电图诊断,下列不正确的是()
A.QRS波群形态可不正常
B.节律多不规则
C.心室率150~250次/分
D.可见到逆行P波
E.起始及终止突然
参考答案:B
按原文填空。
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— What should I wear for the English speaking composition?
— Dress ____ you like. [ ]
A. which
B. what
C. however
D. whenever