The League secretary and the monitor____ asked to attend the .meeting this afternoon.

A．is

B．was

C．are

D．is being

最易引起暂时或永久性耳聋的利尿药是（）

A.布美他尼

B.依他尼酸

C.呋塞米

D.氢氯噻嗪

E.螺内酯