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5. 請說明

【題組】(2) 何謂範疇經濟 (economies of scope)? (5%)
【題組】 (1) 何謂規模經濟 (economies of scale)? (5%)
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【題組】(2) 列式推導需求價格彈性與邊際收益間的關係 (10%)
40. Festivalia and Partyland are two countries, each of which produces chocolate and soda. In Festivalia, the opportunity cost of 3,000 pounds of chocolate is 9,000 gallons of soda. In Partyland, the opportunity cost of 2,000 gallons of soda is 8,000 pounds of chocolate. What is the opportunity cost of one gallon of soda in Partyland? (A) 1/3 pound of chocolate (B) 3 pounds of chocolate (C) 4 pounds of chocolate (D) 1/4 pound of chocolate
39. Comparative advantage implies that _______. (A) every country can gain from exporting and importing. (B) the most inefficient countries cannot export profitably. (C) the most efficient countries cannot import profitably. (D) all of the above
38. In the above figure the economy is initially at point A on aggregate expenditure curve AEo. Suppose investment decreases. As a result _______. (A) there is a movement along AE₁ to a point such as C. (B) the AE curve shifts upward to a curve such as AE2. (C) there is a movement along AE₁ to a point such as B. (D) the AE curve shifts downward to a curve such as AE1.

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