为使心房颤动转为窦性心律，常首选下列哪种药物（）

A.洋地黄

B.胺碘酮

C.普萘洛尔

D.苯妥英钠

E.利多卡因

1. —Does your brother has lessons on Saturdays?

    —No, he doesn't.( )

2. —Let's going to the park today.

    —OK. ( )

3. —There isn't some water in the glass.

    —Would you please get some for me?      ( )      

4. —You are a teacher, right?

    —Yes, I'm.                ( )      

5. He is good at play football.     ( )