以下关于支票的说法错误的是（）。
A.属于即期支付的范畴
B.流动性较弱
C.支票本身不是货币
D.支票收益较低
参考答案：B
Many people like to talk about generation gaps. I don’t think there is in my family, though.
A．it
B．some
C．none
D．one
尿细菌培养定量计数有临床意义的是（）
A.≤104/ml
B.≥104/ml
C.104～105/ml
D.≥105/ml
E.≤105/ml
