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
The number of people invited to the party 200 but a number of them ___absent for different reasons.
A．were ; was
B．was ; were
C．was ; was
D．were ; were
麻醉期间的低血压是指血压降低幅度超过麻醉前20%或血压降低达80mmHg。而麻醉期间的高血压则是指血压升高超过麻醉前的20%或血压升高达160/95mmHg以上。
