We may infer from the leaflet that ______.
A. loud noises can make people lose their hearing
B. people in Boston don't have gardens because of the need for garages
C. pollution by cars costs $2,000 per person per year in Boston
D. many people in Boston can only afford cheaper cars
查看答案
重度房室传导阻滞治疗可用
A. 奎尼丁
B. 阿托品
C. 异搏定
D. 大量钾盐
E. 心得安