某大学生，入学体检心率68／min，心律规整，无杂音，心电图提示_爱下问搜题

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问题单项选择题

某大学生，入学体检心率68／min，心律规整，无杂音，心电图提示：P-R间期0．22，应考虑为（）

A.三度房室传导阻滞

B.一度房室传导阻滞

C.室内传导阻滞

D.二度房室传导阻滞

E.正常心电图

答案

参考答案：B

选择题

右图漫画中的小主人公需要（）

A．合理安排时间，提高学习效率

B．让家长加强督促与管理

C．制定学习计划，专心学习

D．克服依赖性，学会自主学习

填空题

用所给词的适当形式填空，其中有两项多余

cause, health, clean, reason, make, easy, be

     Frequent (频繁的) hand cleaning is the most important thing you can do because germs are one of
the   1   for being ill. It's especially (尤其) important   2   your hands often during this time of year when
germs   3   flu, colds and diarrhea (腹泻) to spread (传播)   4   by touching other people, furniture and
equipment. Remember, clean hands can keep you   5  , so clean them often!
1._______  2._______  3._______  4._______  5._______