-What do you think of the TV play?

-Wonderful. It is worth___ a second time.

A．watching

B．watched

C．seen

D．Seeing

心包叩击音最常见于

A．二尖瓣关闭不全

B．扩张型心肌病

C．心包积液

D．缩窄性心包炎

E．心力衰竭