-- Excuse me, do you know Robert's telephone number?        

--Sorry, I don't know. You may _____ in the phone book.         [ ]

A. look it up                  

B. look up it        

C. find it out                  

D. look it over

关于非阵发性房室交界区性心动过速错误的是（）

A.最常见的原因是洋地黄中毒

B.发作时突发突止

C.发生与房室交界区组织的自律性增高或触发活动有关

D.心律通常规则，Q阳波群正常

E.通常能自行消失