我是初学者。刚学微观经济学。最近刚学完 efficiency and fairness of markets.提到这么个概念，我怕我说不清，我把教材上的原话打上来，也许大家可以更清楚。
A demand curve is a marginal benefit curve.The demand curve for pizza tells us the dollars' worth of other goods and services that people are willing to forgo to consume one more pizza.
为什么需求曲线就是边际效益曲线呢？
哪位可以给解释下呢。。急

[此贴子已经被作者于2008-9-8 19:00:12编辑过]