来源: 100 政大商院转学考 科目:经济学 问题: 下面有六题, 题目是英文, 希望各位高手们能耐心看下去(不然只看5跟6也可以Q_Q) 如果你对其中随便一题有想法的都可以在下面推文, 感谢指教 1.Intuitively, we usually believe that at equilbrium the total revenue of a high-productivity producer is higher than the revenue of a low-productivity producer. Logically, suppose the elasticity of demand is constant, it happens only when the elasticity is (A) greater than one. (B) equal to one. (C) smaller than one. (D) greater than the difference of productivity. 我的想法: 这一题我是看到题目中有总收入, 所以用独占的角度 dTR/dP=Q(1-Ed) 所以弹性>1 选 (A) 但感觉题目不是在问独占? ------------------------------------------------------------- 2.Suppose that the production to produce is x=L-F, where L is labor, F is a constant and x is the production level. Suppose also that potential producers enter the market freely and producer choose output level to maximize profit. (A) The market structure must be perfectly competitive at equilbrium because of the assumption of free entry. (B) If the production is greater than zero, the market structure cannot be perfectly competitive because it contradicts with the assumption of profit maximization. (C) There must be only one firm survive at equilbrium. (D) The profit must be positive for all surving produer. 这题我猜(B) , 但我不知道他给那个生产函数是要如何使用..... -------------------------------------------------------------- 3.X and Y are perfectly complement for consumer. Consumers can be categorized as H and L according to their income level. H consumers are richer than L consumers. The marginal cost of production is increasing for both X and Y. The market structure is perfectly competitive. The preference implies that the income elasticity (A) is always greater than one (B) is always smaller than one (C) is always equal to one (D) can be greater or smaller than one depending on consumers' income level 我想说完全互补是齐序效用函数, 所得弹性为1 选(C) 但是下一题就不会了 4. Based on question 3. Suppose that government transfers income from H to L. Suppose also that the price is fixed at the original level. We difine the aggregate quantity of demand of a good as the summation of H and L's quantity of demand on that good. Then after the income transfer, the aggregate quantity of demand (A) is unchanged for both goods (B) on both good decrease (C) of X increases, while Y decreases (D) on both good increase 这题我完全没概念... --------------------------------------------------------------- 5. The perfect competitive economy without friction is most efficient because (A) demand is equal to supply at equilbrium (B) the marginal utility of consumers equal to the marginal cost of production (C) consumers have maximize utilities and producers have maximize profit (D) all factor are employed 这题我一看到题目直觉联想到P=MC 但选项中没有, 感觉(B)有点像P=MC的概念, 但不太确定,另外(A)感觉符合竞争均衡的概念所以好像也可以选? ----------------------------------------------------------------------- 6.When a firm operates under conditions of monopoly, it price is (A) not constrained (B) constrained by marginal cost (C) constrained by demand (D) constrained by its social agenda 我是想说独占一开始先 MR=MC 决定 Q, 再对到需求曲线决定 P, 所以我选(C) 但(B)似乎也说得通? 另外, 如果此题改问完全竞争, 又该怎麽选? ---------------------------------------------------------------- 谢谢各位高手, 希望听听多方的意见!!! --

※ 发信站: 批踢踢实业坊(ptt.cc) ◆ From: 140.119.129.84 恩恩 我一开始也是这麽想 但後来想想那是不是每个厂商的订价都受限於需求曲线呢? 这样有点失去问独占厂商的意义? 谢谢回应 也请高手继续提供意见~ ※ 编辑: traintrain 来自: 111.248.108.237 (02/22 00:39)