可用于各型心绞痛的药物是（）
A.硝酸甘油
B.普萘洛尔
C.维拉帕米
D.地尔硫革
E.硝苯地平
参考答案：A
---- Are you ready to leave?
---- Almost. I’ll be ready to leave just as soon as I ____ my work.
A．getthrough
B．giveup
C．carryout
D．setabout
生物学零度
