地租-市场价格-生产成本-普通利润(平均利润)是( )提出的。
A．亚当·斯密B．威廉·配弟C．大卫·李嘉图D．马尔萨斯
参考答案：A
根据问句选择答句，将其序号填入括号里。
1. What's the weather like in New York?[ ]
A. It's big.
B. It's far from here.
C. It's rainy.
2. Is it cool in Beijing?[ ]
A. Yes, It's cold.
B. Yes, it is.
C. No, it is.
买家申请退货，卖家超过多少天未处理，退款协议将生效，交易进入退货流程？（）
A.5天
B.10天
C.15天
