对COX-1和COX-2均有抑制抑制作用的是（）
A.美洛昔康
B.吡罗昔康
C.塞来昔布
D.舒林酸
E.羟布宗
参考答案：A
Everybody knows about it! No one knows _________ prevented the rumor from spreading.
A．what was it that
B．what it was that
C．how it was that
D．why it was that
血硝酸中毒的特效解毒剂是（）
A.美蓝
B.镁乳
C.阿托品
D.解磷定
E.氯磷定
