考虑一种类似(教材中)图6-9中的情形。在图6-9中，两国均能生产某种产品且有向下倾斜的供给曲线的

考虑一种类似（教材中)图6-9中的情形。在图6-9中，两国均能生产某种产品且有向下倾斜的供给曲线的

约束。但在本例中，假定两国有相同的生产成本，因而其供给曲线是相同的：

a.你认为国际专业化生产和贸易的模式会是怎样？什么因素决定一国生产何种产品？

b.本题中国际贸易所得是什么？这些所得只存在于有该行业的国家吗？

Consider a situation similar to that in Figure 6-9， in which two countries that can produce a good are subject to forward- falling supply curves. In this case， however， suppose that the two countries have the same costs， so that their supply curves are identical.

a.What would you expect to be the pattern of international specialization and trade？ What would determine who produces the good？

b.What are the benefits of international trade in this case？ Do they accrue only to the country that gets the industry？