男性，65岁，因突发胸骨后剧痛4h急诊入院。心电图示急性广泛前壁心肌梗死。入院后一小时出现呼吸困难，不能平卧，查体：脉率95次／分，血压80／60mmHg，双肺底水泡音，心界向左轻度扩大，心率95坎／分，节律不整，心电监测，出现频发室早。

该病人可以进行下列哪些治疗（）

A.静脉点滴利多卡因

B.给西地兰改善心功能

C.静点胺碘酮

D.口服阿替洛尔

E.口服异搏定

F.IABP

G.多巴胺

H.尿激酶溶栓

Income elasticity is defined as the:（）

A. percentage change in income divided by the percentage change in the quantity demanded.

B. change in quantity demanded divided by the change in income.

C. percentage change in the quantity demanded divided by the percentage change in income.