目前稳定型心绞痛强调尽早实施的治疗是（）
A.抗凝治疗
B.止痛
C.扩冠治疗
D.氧疗
E.介入治疗
参考答案：E
Fans from miles around crowded into the stadium for the concert of Jay Chou on September 4th, 2010, _________ are popular with teenagers.
A．many of his songs
B．and many of whose songs
C．many of which songs
D．many of whose songs
二噁英的毒性通常用来表示（）.
A.半致死浓度；
B.毒性当量；
C.毒性阈值；
D.致死率；
