既有解热镇痛、抗炎、抗风湿作用，又可以抑制血小板凝聚的药物是().
A.A
B.B
C.C
D.D
E.E
参考答案：B
25℃，a L 0.1000 mol/L CH3COOH溶液与b L 0.1000 mol/L NaOH溶液混合，下列说法正确的是
A．若a＞b，则pH一定小于7
B．若a＜b，则一定存在：n(OH-)-n(H+)＞0.1(b-a)
C．c(Na+)＞c(CH3COO-)＞c(OH-)＞c(H+)，则a≤b
D．若pH =7，则a＞b，且 c(Na+)=c(CH3COO-)+c(CH3COOH)
Eliza remembers everything exactly as if it ____ yesterday. [ ]
A. was happening
B. happens
C. has happened
D. happened
