题型:选择题 ---My mother is ill in hospital. I have to look after her this afternoon. ---________.[ ]A. That's all right B. That's true C. All rightD. I'm sorry to hear that 查看答案
题型:单项选择题 甲、乙两种商品总成本共2200元,甲商品按20%利润定价,乙商品按15%的利润定价,后来都打9折出售,结果仍获利131元。则甲的成本为( )。A.1000元 B.1200元 C.1400元 D.1600元 查看答案