误机旅客在航班规定离站时间以后要求退票，需支付票价30%的误机费。 ( ) 修改：________________________
参考答案：UNKNOWN
下列不属于资产类科目的是（ ）。
A．商品进销差价
B．委托代销商品
C．分期收款发出商品
D．代销商品款
I _______ my homework, I guess I can't join you. [ ]
A. don't finish
B. didn't finish
C. haven't finished
D. won't finish
