5 Comparative advantage 6 Completely inelastic demand 7Consumer surplus 8 Cooperative game 9Coumot model 10 Cross-price elasticity of demand 得分阅卷教师 二、简答题：（共10分） 1.Price discrimination requires the ability to sort customers and the ability to prevent arbitrage. Explain how the following can function as price5 Comparative advantage 6 Completely inelastic demand 7 Consumer surplus 8 Cooperative game 9 Coumot model 10 Cross-price elasticity of demand 二、简答题：（共 10 分） 1. Price discrimination requires the ability to sort customers and the ability to prevent arbitrage. Explain how the following can function as price 得分 阅卷教师