if jack would be willing to read the news for $100,000 per year, and he is paid $2,100,000 per year to do so, he is earning economic rent of $2,000,000.为什么它是正确的.
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你提的问题太多了,回答太麻烦,现在回答你一个问题,
第二个:你的提法本身有问题,应当为:市场供给曲线为单个厂商的供给曲线在横轴的加总。前提必须为:原材料市场和劳动力市场是完全竞争市场。