--- Hi, Torry, can I use your computer for a while this afternoon?

--- Sorry, _____________.

A．it is repaired

B．it has been repaired

C．it’s being repaired

D．it had been reapired

阵发性室上性心动过速宜选用

A．奎尼丁
B．利多卡因
C．普萘洛尔
D．维拉帕米
E．阿托品