The head teacher _____ that the students inform their parents _____ the exam results. [ ]

A. allows; about

B. requires; of

C. suggests; on

D. approves; with

患者男性，21岁，因心悸、胸闷3小时就诊，听诊心率72次／分，心律规则，如考虑心律失常，下列哪项应考虑（）

A.心房扑动伴固定比例（如4：1）房室传导

B.阵发性室上性心动过速

C.二度房室传导阻滞

D.心房颤动

E.窦性心动过速