灵敏度
A．实际有病，试验阴性 B．实际无病，试验阳性 C．实际有病，试验阳性D．实际无病，试验阴性 E．试验阳性，实际有病的可能
参考答案：C
1 don't think he could have lost so much money last night,__?
A．did he
B．could he
C．do I
D．hasn't he
I was just going to cut my rose bushes，but someone（）it.Was it you
A.has done
B.had done
C.would do
D.will do
