以下不属于流动资产的特点的是( )。
A．占用时间短
B．投资收益高
C．周转快
D．易变现
参考答案：B
(2013·高考四川卷)He is so busy.He cannot afford enough time with his son________he wants to.
A．even if
B．as if
C．because
D．before
