房扑合并冠心病患者治疗禁忌
A．胺碘酮
B．奎尼丁
C．普罗帕酮
D．洋地黄
E．维拉帕米
参考答案：B,C
I soon found that the work I was doing had al- ready been done by someone else. ____, I was wasting my time.[ ]
A. In other words
B. In a word
C. In words
D. At a word
有意义学习理论的提出者是______。
A．布鲁纳 B．加涅C．奥苏伯尔 D．苛勒
