微观经济学第十四章习题
微观经济学英文版9-14章自测题及答案
微观经济学英⽂版9-14章⾃测题及答案第九章⾃测题：1. If the world price of a product is higher than a country’s domestic price we know that countrya. should import that product.b. should no longer produce that product.c. has a comparative advantage in that product.d. could benefit by imposing a tariff on that product.2. Which of the following is NOT a benefit of trade?a. an increased variety of goodsb. lower costs through economies of scalec. increased competitiond. an ability to control domestic and world prices3. When a country allows trade and becomes an exporter of a good, domestic producersa. gain and domestic consumers lose.b. lose and domestic consumers gain.c. and domestic consumers both gain.d. and domestic consumers both lose.4. The world price of yo-yo’s is $4.00 each. The pre-trade price of yo-yo’s in Taiwan is $3.50 each. If Taiwan allows trade in yo-yo’s we know that Taiwan willa. import yo-yo’s and the price in Taiwan will be $4.00 each.b. import yo-yo’s and the price in Taiwan will be $3.50 each.c. export yo-yo’s and the price in Taiwan will be $4.00 each.d. export yo-yo’s and the price in Taiwan will be $3.50 each.5. When a country moves from a free trade position and imposes a tariff on imports, this causesa. a decrease in total surplus in the market.b. a decrease in producer surplus in the market.c. an increase in consumer surplus in the market.d. a decrease in revenue to the government.6. A tariff and an import quota will botha. increase the quantity of imports and raise domestic price.b. increase the quantity of imports and lower domestic price.c. reduce the quantity of imports and raise domestic price.d. reduce the quantity of imports and lower domestic price.7. The major difference between tariffs and import quotas is thata. tariffs create deadweight losses, but import quotas do not.b. tariffs help domestic consumers, and import quotas help domestic producers.c. tariffs raise revenue for the government, but import quotas create a surplus for import license holders.d. All of the above are correct.8. According to the graph, consumer surplusin this market before trade would bea. A.b. B + C.c. A + B + D.d. C.9. According to the graph, consumer surplusin this market after trade would bea. A.b. C + B.c. A + B + D.d. B + C + D.10. According to the graph, the change in total surplus in this market because of trade isa. Ab.Bc. Cd. D参考答案：1.c2.d3.a4.c5.a6.c7.c8.a9.c 10.d第⼗章⾃测题：1. An externality is the impact ofa. society’s decisions on the well-being of society.b. a person’s actions on that person’s well-being.c. one person’s actions on the well-being of a bystander.d. society’s decisions on the well-being of one person in the society2. If education produces positive externalities we would expecta. government to tax education.b. government to subsidize education.c. people to realize the benefits and therefore cause demand for education to increase.d. colleges to relax admission requirements.3. When a negative externality exists in a market the cost to producersa. is greater than the cost to society.b. will be the same as the cost to society.c. will be less than the cost to society.d. and society will be different regardless of whether an externality is present.4. Internalizing an externality refers to makinga. buyers and sellers take into account the external effects of their actions.b. certain that all market transaction benefits go to only buyers and sellers.c. certain government does not disrupt the internal workings of the market.d. buyers pay the full price for the products they purchase.5. Technology spillover is one type ofa. negative externality.b. positive externality.c. subsidy.d. producer surplus.6. According to the Coase theorem, private markets will solve externality problems and allocate resources efficiently as long asa. private parties can bargain without cost.b. government assigns property rights to the harmed party.c. the externalities that are present are positive and not negative.d. businesses determine an appropriate level of production.7. Pigovian taxes are typically advocated to correct for the effects ofa. positive externalities.b. negative externalities.c. regulatory burden.d. All of the above are correct.8. If the government were to limit the release of air-pollution produced by a steel mill to 10,000 units, this policy would be considered aa. regulation.b. Pigovian tax.c. subsidy.d. market-based policy.9. When one firm sells its pollution permit to another firm, which of the following does NOT occur?a. Both firms benefit.b. The total amount of pollution remains the same.c. Social welfare is enhanced.d. Over time, pollution will be eliminated.10. Which of the following policies is government most inclined to use when faced with a positive externality?a. taxationb. permitsc. subsidiesd. usage fees参考答案：1.c2.b3.c4.a5.b6.a7.b8.a9.d 10.c第⼗⼀章⾃测题1. Goods that are excludable include botha. natural monopolies and public goods.b. public goods and common resources.c. common resources and private goods.d. private goods and natural monopolies.2. Which of the following would be considered a private good?a. national defenseb. a public beachc. local cable television serviced. a bottle of natural mineral water3. The government provides public goods becausea. private markets are incapable of producing public goods.b. free-riders make it difficult for private markets to supply the socially optimal quantity.c. markets are always better off with some government oversight.d. external benefits will occur to private producers.4. The difference between technological knowledge and general knowledge is thata. general knowledge creation is usually more profitable for the creator.b. technological knowledge is excludable and general knowledge is not.c. general knowledge is excludable and technological knowledge is not.d. general knowledge is rival and technological knowledge is not.5. A lighthouse is typically considered a good example of a public good becausea. the owner of the lighthouse is able to exclude beneficiaries from enjoying the lighthouse.b. there is rarely another lighthouse nearby to provide competition.c. a nearby port authority cannot avoid paying fees to the lighthouse owner.d. all passing ships are able to enjoy the benefits of the lighthouse without paying.6. The Tragedy of the Commons results when a good isa. rival and not excludable.b. excludable and not rival.c. both rival and excludable.d. neither rival nor excludable.7. If the use of a common resource is not regulated,a. it cannot be used by anyone.b. the economy will end up with too much of a good thing.c. it becomes a private good.d. it will be overused.8. Government may be able to solve the problem of overuse of a common resource by doing each of the following EXCEPTa. regulating the use or consumption of the common resource.b. taxing the use or consumption of the common resource.c. selling the common resource to a private entity.d. allowing individuals to voluntarily reduce their use of the resource.9. Why do elephants face the threat of extinction while cows do not?a. Cattle are a valuable source of income for many people and elephants have no market value.b. There is a high demand for products that come only from the cow.c. There are still lots of cattle that roam free, while most elephants are in zoos.d. Cattle are owned by ranchers, while elephants are owned by no one.10. Excessive fishing occurs becausea. each individual fisherman has little incentive to maintain the species for the next year.b. fishermen rely on government managers to worry about fish populations.c. fishermen are concerned about the population dynamics of fish biomass, not current harvest rates.d. fishermen have other marketable skills and do not fear exploitation of fish reserves.参考答案：1.d2.d3.b4.b5.d6.a7.d8.d9.d 10.a第⼗⼆章⾃测题1. Which of the following is an implicit cost?(i) the owner of a firm forgoing an opportunity to earn a large salary working for a Wall Street brokerage firm(ii) interest paid on th e firm’s debt(iii) rent paid by the firm to lease office spacea. (ii) and (iii)b. (i) and (iii)c. (i) onlyd. All of the above are correct.2. John owns a shoe-shine business. His accountant most likely includes which of the following costs on his financial statements?a. wages John could earn washing windowsb. dividends John’s money was earning in the stock market before John sold his stock and bought a shoe-shine boothc. the cost of shoe polishd. All of the above are correct.3. Economic profita. will never exceed accounting profit.b. is most often equal to accounting profit.c. is always at least as large as accounting profit.d. is a less complete measure of profitability than accounting profit.4. Zach took $500,000 out of the bank and used it to start his new cookie business. The bankaccount pays 4 percent interest per year. During the first year of his business, Zach sold 12,000 boxes of cookies for $3 per box. Also, during the first year, the cookie business incurred costs that required outl ays of money amounting to$14,000.Zach’s economic profit for the year wasa. $–478,000.b. $–56,000.c. $2,000.d. $22,000.5. The marginal product of labor is equal to thea. incremental cost associated with a one unit increase in labor.b. incremental profit associated with a one unit increase in labor.c. increase in labor necessary to generate a one unit increase in output.d. increase in output obtained from a one unit increase in labor.6. Suppose Jan is starting up a small lemonade stand business. Va riable costs for Jan’s lemonade stand would include the cost ofa. building the lemonade stand.b. hiring an artist to design a logo for her sign.c. lemonade mix.d. All of the above are correct.7. Variable cost divided by quantity produced isa. average total cost.b. marginal cost.c. profit.d. None of the above are correct.8. The average fixed cost curvea. always declines with increased levels of output.b. always rises with increased levels of output.c. declines as long as it is above marginal cost.d. declines as long as it is below marginal cost.9. The efficient scale of the firm is the quantity of output thata. maximizes marginal product.b. maximizes profit.c. minimizes average total cost.d. minimizes average variable cost.10. Average total cost is increasing whenevera. total cost is increasing.b. marginal cost is increasing.c. marginal cost is less than average total cost.d. marginal cost is greater than average total cost.11. Which of the following expressions is correct?a. marginal cost = (change in quantity of output)/(change in total cost).b. average total cost = total cost/quantity of output.c. total cost = variable cost + marginal cost.d. All of the above are correct.12. Which of the following must always be true as the quantity of output increases?a. Marginal cost must rise.b. Average total cost must rise.c. Average variable cost must rise.d. Average fixed cost must fall.13. In the long run,a. inputs that were fixed in the short run remain fixed.b. inputs that were fixed in the short run become variable.c. inputs that were variable in the short run become fixed.d. variable inputs are rarely used.14. The length of the short runa. is different for different types of firms.b. can never exceed 3 years.c. can never exceed 1 year.d. is always less than 6 months.15. Economies of scale occur whena. long-run average total costs rise as output increases.b. long-run average total costs fall as output increases.c. average fixed costs are falling.d. average fixed costs are constant.16. Long-run average total cost curves are often U-shapeda. for the same reasons that average total cost curves are often U-shaped.b. because of constant returns to scale.c. because of increasing coordination problems at low levels of production and increasing specialization of workers at high levels of production.d. because of increasing specialization of workers at low levels of production and increasing coordination problems at high levels of production.参考答案：1.c2.c3.a4.c5.d6.c7.d8.a9.c 10.d 11.b 12.d 13.b 14.a 15.b 16.d第⼗三章⾃测题：1. For a firm in a perfectly competitive market, the price of the good is alwaysa. equal to marginal revenue.b. equal to total revenue.c. greater than average revenue.d. All of the above are correct.2. Which of the following is NOT a characteristic of a perfectly competitive market?a. Firms are price takers.b. Firms have difficulty entering the market.c. There are many sellers in the market.d. Goods offered for sale are largely the same.3. When a competitive firm triples the amount of output it sells,a. its total revenue triples.b. its average revenue triples.c. its marginal revenue triples.d. All of the above are correct.4. When a profit-maximizing firm in a competitive market has zero economic profit, accounting profita. is negative (accounting losses).b. is positive.c. is also zero.d. could be positive, negative or zero.5. For a competitive firm,a. Total revenue = Average revenue.b. Total revenue = Marginal revenue.c. Total cost = Marginal revenue.d. Average revenue = Marginal revenue.6. If marginal cost exceeds marginal revenue, the firma. is most likely to be at a profit-maximizing level of output.b. should increase the level of production to maximize its profit.c. must be experiencing losses.d. may still be earning a profit.7. When price is greater than marginal cost for a firm in a competitive market,a. marginal cost must be falling.b. the firm must be minimizing its losses.c. there are opportunities to increase profit by increasing production.d. the firm should decrease output to maximize profit.8. When fixed costs are ignored because they are irrelevant to a business’s production decision, they are calleda. explicit costs.b. implicit costs.c. sunk costs.d. opportunity costs.9. When a firm makes a short-run decision not to produce anything during a specified period of time because of current market conditions, the firm is said toa. shut down.b. exit.c. withdraw.d. leave the industry.10. Profit-maximizing firms enter a competitive market when, for existing firms in that market,a. total revenue exceeds fixed costs.b. total revenue exceeds total variable costs.c. average total cost exceeds average revenue.d. price exceeds average total cost.11. A firm’s short-run supply curve is part of which of the following curves?a. marginal revenueb. average variable costc. average total costd. marginal cost12. Suppose you bought a ticket to a football game for $30, and that you place a $35 value on seeing the game. If you lose the ticket, then what is the maximum price you should pay for another ticket?a. $30b. $35c. $60d. $6513. When new firms have an incentive to enter a competitive market, their entry willa. increase the price of the product.b. drive down profits of existing firms in the market.c. shift the market supply curve to the left.d. All of the above are correct.14. In a perfectly competitive market, the process of entry and exit will end when, for firms in the market,a. price is equal to average variable cost.b. marginal revenue is equal to average variable cost.c. economic profits are zero.d. All of the above are correct.15. In a competitive market that is characterized by free entry and exit,a. all firms will operate at efficient scale in the short run.b. all firms will operate at efficient scale in the long run.c. the price of the product will differ across firms.d. the number of sellers in the market will steadily decrease over time.16. The assumption of a fixed number of firms is appropriate for analysis ofa. the short run, but not the long run.b. the long run, but not the short run.c. both the short run and the long run.d. neither the short run nor the long run.参考答案：1.a2.b3.a4.b5.d6.d7.c8.c9.a 10.d 11.d 12.b 13.b 14.c 15.b 16.a第⼗四章⾃测题：1. Which of the following statements is correct?a. A competitive firm is a price maker and a monopoly is a price taker.b. A competitive firm is a price taker and a monopoly is a price maker.c. Both competitive firms and monopolies are price takers.d. Both competitive firms and monopolies are price makers.2. Which of the following is an example of a barrier to entry?(i) A key resource is owned by a single firm.(ii) The costs of production make a single producer more efficient than a large number of producers. (iii) The government has given the existing monopoly the exclusive right to produce the good.a. (i) and (ii)b. (ii) and (iii)c. (i) onlyd. All of the above are correct.3. The defining characteristic of a natural monopoly isa. constant marginal cost over the relevant range of output.b. economies of scale over the relevant range of output.c. constant returns to scale over the relevant range of output.d. diseconomies of scale over the relevant range of output.4. Patent and copyright laws are major sources ofa. natural monopolies.b. government-created monopolies.c. resource monopolies.d. None of the above are correct.5. The De Beers diamond monopoly is a classic example of a monopoly thata. is government-created.b. arises from the ownership of a key resource.c. results in very little advertising of the product that the monopolist produces.d. was broken up by the government a long time ago.6. In order to sell more of its product, a monopolist musta. sell to the government.b. sell in international markets.c. lower its price.d. use its market power to force up the price of complementary products.7. For a profit-maximizing monopolist,a. P＞MR = MC.b. P = MR = MC.c. P ＞MR ＞MC.d. MR ＜MC ＜P.8. For a monopoly, the supply curve is a portion of itsa. marginal revenue curve.b. marginal cost curve.c. average total cost curve.d. none of the above; a monopoly does not have a supply curve.9. What is the monopolist’s profit under the following conditions? The profit-maximizing price charged for goods produced is $16. The intersection of the marginal revenue and marginal cost curves occurs where output is 10 units and marginal cost is $8. Average total cost for 10 units of output is $6.a. $20b. $80c. $100d. $16010. Antitrust laws allow the government toa. prevent mergers.b. break up companies.c. promote competition.d. All of the above are correct.参考答案：1.b2.d3.b4.b5.b6.c7.a8.d9.c 10.d。
曼昆《经济学原理(微观经济学分册)》(第6版)笔记(第14章--竞争市场上的企业)
曼昆《经济学原理（微观经济学分册）》（第6版）第十四章竞争市场上的企业复习笔记跨考网独家整理最全经济学考研真题，经济学考研课后习题解析资料库，您可以在这里查阅历年经济学考研真题，经济学考研课后习题，经济学考研参考书等内容，更有跨考考研历年辅导的经济学学哥学姐的经济学考研经验，从前辈中获得的经验对初学者来说是宝贵的财富，这或许能帮你少走弯路，躲开一些陷阱。
以下内容为跨考网独家整理，如您还需更多考研资料，可选择经济学一对一在线咨询进行咨询。
一、什么是竞争市场1．竞争的含义竞争市场是指有许多交易相同产品的买者和卖者，以至于每一个买者和卖者都是价格的接受者的市场。
竞争市场的三个特征或条件：（1）市场上有许多买者和许多卖者；（2）各个卖者提供的物品大体上是相同的；（3）企业可以自由地进入或退出市场。
2．竞争企业的收益（1）厂商的总收益是指企业按照一定价格出售一定量产品所获得的全部收入，即()TR Q为总收益，P为既定的市场价格，Q为销售总量。
=。
式中，()TR Q PQ（2）平均收益指企业在平均每一单位产品销售上所获得的收入，即()()/=。
AR Q TR Q Q对所有企业而言，平均收益等于物品的价格。
（3）边际收益指企业增加一单位产品销售时所获得的收入增量，即()()/=∆∆。
对竞争企业来说，边际收益等于物品的价格。
MR Q TR Q Q（4）竞争企业的收益曲线具有两个特征：①竞争企业的平均收益曲线AR、边际收益曲线MR和需求曲线d这三条线是重叠的，即有AR MR P==。
②竞争企业的总收益曲线TR是一条由原点出发的呈上升趋势的直线。
其斜率之所以不变是因为每一销售量上的边际收益是相应的总收益曲线的斜率，而竞争企业的边际收益是不变的且始终等于既定的市场价格。
二、利润最大化与竞争企业的供给曲线1．边际成本曲线和企业的供给决策（1）企业实现最大利润的均衡条件图14-1中的成本曲线有三个可以描述大多数企业的特征：边际成本曲线（MC）向右上方倾斜；平均总成本曲线（ATC）是U形的；边际成本曲线与平均总成本曲线相交于平均总成本曲线的最低点。
微观经济学第十四章竞争市场上的企业
第十四章竞争市场上的企业问题与应用1．许多小船用一种从石油中提炼出来的玻璃纤维制造。
假设石油价格上升。
A．用图形说明单个造船企业的成本曲线和市场供给曲线发生了什么变动.答：石油价格上升，使个别造船企业的边际成本、平均总成本、平均可变成本均上升. 厂商成本上升,供给减少,供给曲线从S 1平移到S2，市场价格上升,销售量下降.(a)成本曲线（b)市场供给曲线图14－7 个别造船企业的成本曲线和市场供给曲线B．短期中造船者的利润会发生什么变动？长期中造船者的数量会发生什么变动？? 答：短期中造船者的利润会下降。
因为价格有粘性,短期内,市场价格不会有太大变动,但厂商的生产成本上升了。
长期中造船者的数量会下降，因为市场规模缩小了。
2．你到镇里最好的餐馆,点了一道4400美元的龙虾。
吃了一半龙虾，你就感到非常饱了.你的女友想劝你吃完，因为你无法把它拿回家，而且也因为“你已经为此花了钱"。
你应该吃完吗？把你的答案与本章的内容联系起来.答：我不应该吃完.因为龙虾已经买下了，买龙虾所付的钱成为沉没成本。
短期均衡中，沉没成本不予考虑。
此时,我只衡量吃龙虾的边际成本与边际收益就可以了。
我感到饱了,就是我的收益已经最大化。
如果再吃,就会产生不适感，边际成本大于边际收益，利润会为负。
这就像竞争厂商的短期均衡一样，只要MR＝MC，厂商就不再增加产量,因为已经达到利润最大化。
3．鲍伯的草坪剪草中心是追求利润最大化的竞争企业。
鲍伯每剪一块草坪赚27美元。
他每天的总成本是280美元，其中30美元是固定成本。
他每天剪10块草坪.你对鲍伯的短期停止营业决策和长期退出决策有何见解？答：对鲍伯的剪草中心来说,P＝27 美元，A TC＝280／10＝28 美元，AVC＝（280－30）／10＝25 美元.当P〈A VC,即P〈25 美元时,鲍伯应该短期停止营业.因为在短期中，价格没有弥补平均可变成本，企业停止生产,状况会变好一些.当P<ATC,即P<28 美元时，鲍伯应该长期退出剪草坪市场。
平狄克《微观经济学》（第7版）习题详解（第14章-投入要素市场）
平狄克《微观经济学》（第7版）习题详解（第14章-投⼊要素市场）平狄克《微观经济学》（第7版）第14章投⼊要素市场课后复习题详解跨考⽹独家整理最全经济学考研真题，经济学考研课后习题解析资料库，您可以在这⾥查阅历年经济学考研真题，经济学考研课后习题，经济学考研参考书等内容，更有跨考考研历年辅导的经济学学哥学姐的经济学考研经验，从前辈中获得的经验对初学者来说是宝贵的财富，这或许能帮你少⾛弯路，躲开⼀些陷阱。
以下内容为跨考⽹独家整理，如您还需更多考研资料，可选择经济学⼀对⼀在线咨询进⾏咨询。
1．为什么当⼚商在产品市场具有垄断势⼒时，它对劳动⼒的需求曲线⽐⼚商是竞争性⽣产时弹性⼩？答：⼚商在产品市场具有垄断势⼒时，它对劳动⼒的需求曲线⽐⼚商是竞争性⽣产时弹性⼩，其原因在于：（1）⼚商对劳动的需求曲线是由劳动的边际收⼊产出L MRP 决定的。
L MRP 指在其他⽣产要素的投⼊量固定不变时追加⼀单位的劳动⼒要素投⼊所带来的收益。
它等于边际物质产品（L MP ）与边际收益（MR ）的乘积，即·L L MRP MP MR =。
（2）在完全竞争市场上，边际收益曲线具有完全弹性并且等于价格P ，故·L L MRP MP P =。
在垄断市场上，边际收益曲线是向下倾斜的，弹性较⼩。
通过边际收⼊产出L MRP 的表达式可以看出，当⼚商在产出品市场具有垄断势⼒时，对劳动的需求曲线⽐⼚商是竞争性⽣产时弹性⼩。
2．为什么劳动供给曲线可能是向后弯曲的？答：劳动供给曲线是⼈们提供的劳动和对劳动所⽀付的报酬之间关系的表现形式。
假设劳动的供给只取决于⼯资，则劳动供给曲线可⽤图14-4表⽰。
此图是向后弯曲的劳动供给曲线。
这是因为，当⼯资较低时，随着⼯资的上升，消费者为较⾼的⼯资所吸引，将减少闲暇，增加劳动供给量。
在这个阶段，劳动供给曲线向右上⽅倾斜。
但是，⼯资上涨对劳动供给的吸引是有限的。
当⼯资涨到⾜够⾼（例如0W ）时，消费者的劳动供给量达到最⼤，此时，如果继续增加⼯资，劳动供给量不会继续增加，反⽽会减少，如当⼯资从0W 提⾼到1W 时，劳动供给则从0L 减少到1L 。
微观经济学第十四章消费者剩余
p2 固定
m1 p1' x1' p2x'2
p"1x"1 p2x"2 m2 p1' x1'" p2x'2"
u1
u2
x1'" x1'
x1
x2
x"2 x'2 x'2"
x"1
等价变化
p1=p1’ p1=p1”
p2 固定
m1 p1' x1' p2x'2
p"1x"1 p2x"2 m2 p1' x1'" p2x'2"
汽油的保守价格曲线
r110
r28 r36
r44
rr562
0
1
23456
pG
Gasoline (gallons)
($) Res. Values
r110
r28 r36
r44
rr562
0
1
所获等价效用
汽油的保守价格曲线
$ 交易所得净效用的货币价值
pG 23456
Gasoline (gallons)
所获等价效用
CS
恰好为消费者消费x1’单位商品 1所获的效用
p1'
x1'
x*1
消费者剩余
当消费者效用曲线是关于商品2的拟线性 效用函数时，消费者剩余是消费者消费 商品1所获效用的货币价值的精确测量。
否则，消费者剩余只是一个近似表示。
消费者剩余
由于商品价格p1的改变所导致的消费 者总效用的改变是消费者剩余改变的 近似。
x2
微观经济学(山东大学)智慧树知到答案章节测试2023年
第一章测试1.由于人们会对激励做出反应，如果会计师的平均薪水增加50％，而教师的平均薪水增加20％，我们可以预期（）A:上大学的学生少了B:学生将从会计专业转向教育专业C:学生将从教育专业转向会计专业答案:C2.下列哪一项不是去度假的机会成本的一部分? （）A:你用于食物的钱B:如果你留在家里并工作可以赚到的钱C:你用于飞机票的钱D:你看百老汇表演所花的钱答案:A3.高而持久的通货膨胀的原因是（）A:欧佩克使石油价格上升得太高了B:工会使工资增加得太多了C:政府增加的货币量太多了D:管制使生产成本增加得太多了答案:C4.可以提高生产率的方法是（）A:限制与国外的贸易B:提高工会会员的工资C:改善工人的教育D:提高最低工资答案:C5.下列哪一种情况涉及到权衡取舍? （）A:上大学B:买一辆新汽车C:星期天下午看一场足球比赛答案:ABC第二章测试1.如果一种经济在其生产可能性边界上运行，它要多生产另一种物品就必须少生产一种物品。
A:错B:对答案:B2.生产可能性边界上的点是（）A: 有效率的B: 无效率的C: 不能达到的D: 规范的答案:A3.以下哪一项不会使一国的生产可能性曲线向外移动? （）A: 失业减少B: 劳动力增加C: 资本存量增加D: 技术进步答案:A4.以下哪一项描述了经济增长（）A: 生产可能性边界向外移动B: 从该曲线内向曲线移动C: 沿着生产可能性边界向资本品移动D: 生产可能性边界向内移动答案:A5.以下哪一项表述是规范表述? （）A: 发行了太多货币就引起通货膨胀B: 失业率应该降低C: 大量政府赤字使经济增长更慢D: 如果工资高，人们就努力工作答案:B第三章测试1.即使一国在所有物品上都有绝对优势。
两国也能从贸易中得到好处。
A:对B:错答案:A2.下表表示澳大利亚和韩国一个工人每月可以生产的产量，根据该表答题：下列哪一种关于绝对优势的表述是正确的A:韩国在粮食和电器的生产上都有绝对优势。
蔡继明《微观经济学(第2版)》课后习题详解(第14章 公共选择)
蔡继明《微观经济学（第2版）第14章公共选择跨考网独家整理最全经济学考研真题，经济学考研课后习题解析资料库，您可以在这里查阅历年经济学考研真题，经济学考研课后习题，经济学考研参考书等内容，更有跨考考研历年辅导的经济学学哥学姐的经济学考研经验，从前辈中获得的经验对初学者来说是宝贵的财富，这或许能帮你少走弯路，躲开一些陷阱。
以下内容为跨考网独家整理，如您还需更多考研资料，可选择经济学一对一在线咨询进行咨询。
1．解释下列基本概念：私人选择、公共选择、投票交易、寻租。
答：略。
2．说明阿罗定理及其含义。
答：阿罗的不可能性定理是指试图找出一套规则（或程序），以从一定的社会状况下的个人选择顺序中推导出符合某种理性条件的社会选择顺序，一般是办不到的。
阿罗不可能定理包含两项重要假设：每个人的偏好是可以排序的；每个人的偏好次序是传递的。
阿罗首先定义了阿罗首先假定了从表面上看社会偏好应该服从的六个无可非议的公理：①所有的社会状态一定可以排序；②社会排序一定是可传递的；③排序与个人偏好正相关；④如果出现新的可行社会状态，不应该影响起初的社会状态排序；⑤不存在独裁，或者说个人不能把自己的偏好强加于社会；⑥没有与个人偏好无关的排序。
阿罗证明，尽管上述6公理从表面上看都是合理的，但并不存在同时服从上述6个条件的一般社会关系，即：社会偏好并不总是同时满足上述6公理。
此即阿罗定理。
阿罗证明了不存在一个选择规则或选择程序能够同时满足上面六个条件，这表明由个人选择合乎逻辑地转化为社会选择的过程包含巨大的困难。
根据阿罗不可能性定理，在非独裁的情况下，不可能存在有适用于所有偏好类型的社会福利函数。
同时，它还意味着不能从不同个人的偏好中合理地形成社会偏好。
换句话说，一般意义上的社会福利函数并不存在，这表明，西方经济学没有能彻底的解决资源配置问题。
3．说明中间投票人定理及其带来的问题。
答：中间投票人定理是指如果在一个多数决策的模型中，个人偏好都是单峰的，则反映中间投票人意愿的那种政策会最终获胜，因为选择该政策会使一个团体的福利损失最小。
(NEW)张元鹏《微观经济学》(中级教程)课后习题详解
目 录第一篇 微观经济学导论第一章 微观经济学是什么第二章 需求、供给与市场均衡第二篇 完全竞争环境下的微观经济运行第三章 消费者行为理论（Ⅰ）第四章 消费者行为理论（Ⅱ）第五章 生产者行为理论（Ⅰ）第六章 生产者行为理论（Ⅱ）第七章 竞争性市场分析：产品市场第八章 竞争性市场分析：要素市场第九章 一般均衡与福利经济学第三篇 不完全竞争环境下的微观经济运行第十章 完全垄断理论第十一章 垄断竞争理论第十二章 寡头市场第十三章 博弈论与厂商的策略性行为第十四章 不完全竞争下的要素价格理论第四篇 不确定下、信息与市场失灵第十五章 不确定性、风险与信息非对称第十六章 市场失灵、外部性与公共物品第一篇 微观经济学导论第一章 微观经济学是什么1判断题（1）任何不对其索取价格的物品都是自由取用物品。
（ ）【答案】×【解析】自由取用物品是指相对于人类的欲望来说，其数量是无限的，取用时不需要花费任何代价，其价格为零，如自然界中的空气、水等。
但是不对其索取价格并不代表都是自由取用物品，如得到免费馈赠的物品，对于被赠与人来说未被索取任何价格，但该物品仍是经济物品。
（2）稀缺物品一定有一个直接以货币支付的价格。
（ ）【答案】×【解析】稀缺物品是指相对于人类无限多样性的需要或欲望而言，其数量是有限的，取用时需要付出一定的代价，其机会成本大于零。
但不是所有的稀缺性都可以用货币来表示。
例如，随着工业的发展和环境污染，清洁的水和新鲜的空气逐渐变得稀缺，但难以用货币来衡量。
（3）如果你得到两张免费的奥运会参观券，它们可以看作是自由取用物。
（ ）【答案】×【解析】自由物品的免费取用是对于所有社会成员而言的，奥运会参观券对于其他人来说，仍需支付一定的价格，所以是稀缺物品。
（4）如果某种资源免费供应时社会成员所需要的多于现有的，那么，这种资源就是稀缺的。
（ ）【答案】√【解析】当某种资源免费供应社会成员所需要的多于现有的，便出现了。
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Microeconomics - Testbank 1 (Hubbard/O'Brien) Chapter 14 Monopoly and Antitrust Policy1) A monopoly is a seller of a product:A) w ith many substitutes.B) without a close substitute.C) w ith a perfectly inelastic demand.D) w ithout a a well-defined demand curve.Answer: BDiff: 1 Page Ref: 4442) A monopolist is a seller who:A) h as to consider the actions of other sellers.B) i s small relative to the market.C) c an ignore the threat of competition from other firms.D) a ll of the above.Answer: CDiff: 2 Page Ref: 4453) T he demand curve for the monopolist's product is:A) t he market demand for the product.B) m ore elastic than the market demand for the product.C) m ore inelastic than the market demand for the product.D) u ndefined.Answer: ADiff: 2 Page Ref: 4514) T o sell more output, the monopolist:A) o nly has to produce more.B) h as to lower the product's price.C) m ust lower production costs.D) h as to advertise the product extensively.Answer: BDiff: 2 Page Ref: 4525) T o keep a monopoly a firm must have:A) a perfectly inelastic demand.B) a n insurmountable barrier to entry.C) m arginal revenue equal to demand.D) a ll of the above.Answer: BDiff: 2 Page Ref: 4456) A local electricity-generating company has a monopoly that is protected by a barrierto entry that takes the form of:A) c ontrol of a key raw material.B) n etwork externalities.C) e conomies of scale.D) n one of the above.Answer: CDiff: 2 Page Ref: 4507) A patent or copyright is a barrier to entry based on:A) o wnership of a key necessary raw material.B) l arge economies of scale as output increases.C) g overnment action to protect one producer.D) w idespread network externalities in supply of the good or service.Answer: CDiff: 2 Page Ref: 4458) A public franchise is:A) o wnership of a key necessary raw material.B) g overnment ownership and operation of a legal monopoly.C) g overnment designation that a private firm is the only legal producer of a good orservice.D) a n unregulated monopoly necessary for the public good.Answer: CDiff: 2 Page Ref: 4459) A public enterprise is:A) a ny private business that is not-for-profit.B) g overnment ownership and operation of a legal monopoly.C) g overnment designation that a private firm is the only legal producer of a good orservice.D) a n unregulated monopoly necessary for the public good.Answer: BDiff: 2 Page Ref: 44510) A United States government patent lasts:A) f orever.B) 50 years.C) 20 years.D) 7 years.Answer: CDiff: 2 Page Ref: 44611) G overnments grant patents to encourage:A) r esearch and development on new products.B) c ompetition.C) l ow prices.D) a ll of the above.Answer: ADiff: 2 Page Ref: 44612) G overnments grant patents to:A) c ompensate firms for research and development costs.B) e ncourage competition.C) e ncourage low prices.D) a ll of the above.Answer: ADiff: 2 Page Ref: 44613) P atent protection is of vital importance for:A) f urniture producers.B) s oftware firms.C) p harmaceutical firms.D) a uto makers.Answer: CDiff: 2 Page Ref: 44614) O wnership of a key resource is important in:A) a luminum production.B) n ickel production.C) p rofession sports.D) a ll of these.Answer: DDiff: 1 Page Ref: 44715) A network externality is:A) h aving a network of suppliers and buyers for a good or service.B) h aving lobbyists to advocate a public franchise.C) a good or service whose usefulness increases with the number of people using it.D) a good or service that requires connection to a network for it to be useful.Answer: CDiff: 2 Page Ref: 44816) A virtuous cycle is:A) u sing lobbyists to petition Congress to grant a public franchise.B) u sing monopoly profits to create new products for additional monopoly profits.C) a ttracting enough buyers initially to increase a product's usefulness to attractmore buyers.D) a ttracting enough sales to gain economies of scale.Answer: CDiff: 2 Page Ref: 44917) F or a natural monopoly to exist:A) a firm must continually buy up rivals.B) a firm's long run average cost curve must exhibit diseconomies of scale.C) a firm's long run average cost curve must exhibit economies of scale.D) a firm must have a patent.Answer: CDiff: 2 Page Ref: 44918) A natural monopoly is characterized by:A) l arge marginal costs relative to fixed costs.B) s mall fixed costs relative to variable costs.C) l arge fixed costs relative to variable costs.D) f ixed costs that are equal to variable costs.Answer: CDiff: 2 Page Ref: 45019) A monopolist's profit maximizing price and output is:A) w here average total cost are smallest.B) w here total costs are the smallest relative to price.C) w here marginal revenue equals marginal cost and charging the price on marketdemand for that output.D) w here price is as high as possible.Answer: CDiff: 3 Page Ref: 45320) A monopoly:A) a lways earns a profit.B) i s a price taker.C) m ust lower price to sell more of its product.D) a ll of the above.Answer: CDiff: 2 Page Ref: 45221) I f a monopolist's price is $50 a unit and its marginal cost is $25, then:A) t o maximize profit the firm should increase output.B) t o maximize profit the firm should decrease output.C) t o maximize profit the firm should continue to produce the output it isproducing.D) n ot enough information is given to say say what the firm should do to maximizeprofit.Answer: DDiff: 3 Page Ref: 45322) I f a monopolist's marginal revenue is $35 a unit and its marginal cost is $25, then:A) t o maximize profit the firm should increase output.B) t o maximize profit the firm should decrease output.C) t o maximize profit the firm should continue to produce the output it isproducing.D) n ot enough information is given to say say what the firm should do to maximizeprofit.Answer: ADiff: 2 Page Ref: 45323) I f a monopolist's marginal revenue is $15 a unit and its marginal cost is $25, then:A) t o maximize profit the firm should increase output.B) t o maximize profit the firm should decrease output.C) t o maximize profit the firm should continue to produce the output it isproducing.D) n ot enough information is given to say say what the firm should do to maximizeprofit.Answer: BDiff: 2 Page Ref: 45324) I f a monopolist's marginal revenue is $25 a unit and its marginal cost is $25, then:A) t o maximize profit the firm should increase output.B) t o maximize profit the firm should decrease output.C) t o maximize profit the firm should continue to produce the output it isproducing.D) n ot enough information is given to say say what the firm should do to maximizeprofit.Answer: CDiff: 2 Page Ref: 45325) I f a monopolist's price is $50 at the output where marginal revenue equals marginalcost and average total cost is $43, then:A) t he firms average profit is $50.B) t he firms average profit is $43.C) t he firms average profit is $7.D) N ot enough information is given to answer the question.Answer: CDiff: 2 Page Ref: 45426) I f a monopolist's price is $50 at 63 units of output and marginal revenue equalsmarginal cost and average total cost equals $43, then the firm's total profit is:A) $3,150.B) $2,709.C) $441.D) $7.Answer: CDiff: 3 Page Ref: 454Refer to Figure 14.1 for the questions above.Figure 14.127) T o profit maximize the firm in figure 14.1 will produce:A) Q1.B) Q2.C) Q3.D) Q4.Answer: BDiff: 3 Page Ref: 45328) T he profit maximize price for the firm in figure 14.1 is:A) P1.B) P2.C) P3.D) P4.Answer: CDiff: 3 Page Ref: 45329) I f average total costs are ATC1, the firm in figure 14.1 will:A) s uffer a loss.B) b reak even.C) m ake a profit.D) f ace competition.Answer: CDiff: 3 Page Ref: 45330) I f average total costs are ATC2, the firm in figure 14.1 will:A) s uffer a loss.B) b reak even.C) m ake a profit.D) f ace competition.Answer: BDiff: 3 Page Ref: 45331) I f average total costs are ATC3, the firm in figure 14.1 will:A) s uffer a loss.B) b reak even.C) m ake a profit.D) f ace competition.Answer: ADiff: 3 Page Ref: 45332) I n figure 14.1, the difference between the monopoly output and the competitiveoutput is:A) Q2-Q1.B) Q3-Q1.C) Q3-Q2.D) Q4-Q2.Answer: CDiff: 3 Page Ref: 45633) E conomic efficiency in a market occurs when:A) c onsumer surplus is maximized.B) p roducer surplus is maximized.C) c onsumer surplus plus producer surplus is maximized.D) p rice is as low as possible.Answer: CDiff: 2 Page Ref: 45734) A profit maximizing monopolist's price is:A) e qual to what the price would be if the mononoplist's industry were competitive.B) less than what the price would be if the mononoplist's industry werecompetitive.C) g reater than what the price would be if the mononoplist's industry werecompetitive.D) n ot consistently related to price if the market were competitive.Answer: CDiff: 2 Page Ref: 45635) O utput under a monopoly is:A) e qual to what output would be if the industry were competitive.B) l ess than what output would be if the industry were competitive.C) g reater than what output would be if the industry were competitive.D) h as no consistent relationship to what output would be if the industry werecompetitive.Answer: BDiff: 2 Page Ref: 45636) C ompared to perfect competition, under monopoly:A) c onsumer surplus is unchanged because price and output is the same.B) c onsumer surplus is decreased because price is higher and output is lower.C) c onsumer surplus is increased because price is higher and output is the same.D) c onsumer surplus is eliminated.Answer: BDiff: 2 Page Ref: 45737) C ompared to perfect competition, a monopoly:A) i ncreases consumer surplus.B) c auses a deadweight welfare loss.C) i ncreases total surplus.D) a ll of the above.Answer: BDiff: 2 Page Ref: 45738) C ompared to perfect competition, with monopoly:A) c onsumer surplus is reduced.B) o utput is reduced.C) t otal surplus is reduced.D) a ll of the above.Answer: DDiff: 2 Page Ref: 45739) R elative to a perfectly competitive market, monopoly result in:A) a gain in producer surplus is equal to the gain in consumer surplus.B) a gain in producer surplus is equal to the loss in consumer surplus.C) a gain in producer surplus is less than the loss in consumer surplus.D) N one of these occur.Answer: CDiff: 2 Page Ref: 45740) M arket power is:A) c onsumers ability to determine what is produced or consumer sovereignty.B) a firm being able to advertise its product and succeed in selling more output.C) t he ability of a firm to sell at a lower price than rival sellers.D) t he ability of a firm to charge a price higher than marginal cost.Answer: DDiff: 2 Page Ref: 45741) T he type of firms that do not have market power are:A) p erfectly competitive.B) m onopolistically competitive.C) o ligopoly.D) m onopolies.Answer: ADiff: 1 Page Ref: 45742) M arket power in the U.S. causes:A) m any people to be poor.B) a small loss of economic efficiency.C) g reater pollution than there otherwise would be.D) m any firms to be driven out of business.Answer: BDiff: 2 Page Ref: 45843) T he size of a deadweight loss in a market is reduced by:A) g overnment legislating a ceiling price.B) g overnment legislating a price floor.C) m arket price being close to marginal cost.D) a ll of the above.Answer: CDiff: 2 Page Ref: 45844) A market economy benefits from market power:A) i f the majority of the population are entrepreneurs.B) i f firms with market power do research and development with the profits earned.C) i f market power gets so bad the government creates public enterprises.D) u nder no circumstances.Answer: BDiff: 2 Page Ref: 45845) I f a firm has market power and has earned monopoly profits for some time, JosephSchumpeter would predict:A) t he government will eventually have to control these firms.B) t he public will get fed up and refuse to buy those products.C) n ew products will drive older products and firms with market power out of themarket.D) a ll of the above.Answer: CDiff: 2 Page Ref: 45846) T he first federal law passed to control monopolies was the:A) C ellar-Kefauver Act.B) C layton Act.C) F ederal Trade Commission Act.D) S herman Act.Answer: DDiff: 1 Page Ref: 45947) T he"trust" in antitrust refers to:A) c itizens who do not trust the government to deal with market power.B) a board of trustees that had collusive control over different companies.C) t he type of governmental control in antitrust laws.D) t he trust collusive firms have that each member will live by the agreement.Answer: BDiff: 2 Page Ref: 45948) T he Sherman Act prohibited:A) m arginal cost pricing.B) s etting price above marginal cost.C) c ollusive price agreements among rival sellers.D) s elling below average total cost.Answer: CDiff: 1 Page Ref: 45949) S hortly after the passage of the Sherman Act and a narrow Supreme Courtinterpretation of the Act:A) s etting price equal to marginal cost became the only way to avoid prosecution.B) a ll industries became perfectly competitive.C) a wave of mergers took place.D) t echnological change slowed.Answer: CDiff: 2 Page Ref: 45950) T he Clayton Act prohibited:A) a ll vertical mergers.B) a ll horizontal mergers.C) a ny merger if its effect was to substantially lessen competition or create amonopoly.D) a ll conglomerate mergers.Answer: CDiff: 1 Page Ref: 45951) T he Federal Trade Commission Act:A) g ave the FTC full power to regulate mergers.B) c losed the loopholes in the Sherman and Clayton Acts.C) d ivided enforcement of antitrust laws between the FTC and the Department ofJustice.D) p rohibited charging buyers different prices if the result would reducecompetition.Answer: CDiff: 2 Page Ref: 45952) I f Ford Motor Company and General Motors were to merge, it would be an example ofa:A) v ertical merger.B) h orizontal merger.C) c onglomerate merger.D) n one of the above.Answer: BDiff: 1 Page Ref: 46053) I f U.S. Steel and General Motors merged, this would be an example of a:A) v ertical merger.B) h orizontal merger.C) c onglomerate merger.D) n one of the above.Answer: ADiff: 1 Page Ref: 46054) W hen a proposed merger between two companies is being reviewed by thegovernment, the relevant market is defined by:A) w hether or not there are close substitutes for the products of the two firms.B) h ow elastic the demand is for each firm's product.C) c ounting the number of firms that are producing the same product.D) h ow much advertising is done in the industry.Answer: ADiff: 2 Page Ref: 46255) A Herfindahl-Hirschman Index is calculated by:A) s umming the amount of sales by the four largest firms and dividing by totalindustry sales.B) d ividing the number of firms wanting to merge by the total number in theindustry.C) s umming the squares of the market shares of each firm in the industry.D) s umming the advertising expenditure of the firms that want to merge by totalindustry advertising expenditures.Answer: CDiff: 2 Page Ref: 46256) N atural monopolies in the United States are generally regulated by:A) F ederal Trade Commission.B) D epartment of Justice.C) l ocal or state regulatory commissions.D) t he Department of Commerce.Answer: CDiff: 1 Page Ref: 46457) I f a natural monopoly regulatory commission set a price where marginal cost is equalto demand:A) t he firm would earn monopoly profits.B) E conomic efficiency would not be achieved.C) t he firm would incur a loss.D) t he firm would break even.Answer: CDiff: 2 Page Ref: 464Refer to Figure 14.2 for the questions below.Figure 14.258) T he firm in figure 14.2 wants to produce:A) Q1.B) Q2.C) Q3.D) Q4.Answer: BDiff: 3 Page Ref: 46459) W here the firm in figure 14.2 wants to produce, the market clearing price is:A) P1.B) P2.C) P3.D) P4.Answer: CDiff: 3 Page Ref: 46460) T he most the firm in figure 14.2 can be regulated to produce is:A) Q1.B) Q2.C) Q3.D) Q4.Answer: CDiff: 3 Page Ref: 46461) I f the firm in figure 14.2 produces what it wants, it will:A) m ake a profit.B) s uffer a loss.C) b reak even.D) f ace entry.Answer: ADiff: 3 Page Ref: 46462) I f the firm in figure 14.2 is regulated to produce as much as possible, it will:A) m ake a profit.B) s uffer a loss.C) b reak even.D) f ace entry.Answer: CDiff: 3 Page Ref: 46463) A possible advantage of a horizontal merger for the economy is:A) t he merging firms could avoid losses.B) e conomies of scale and possibly lower prices.C) m ore competition in the industry.D) m ore corporate income tax revenue for the government.Answer: BDiff: 2 Page Ref: 46164) E conomic efficiency requires that a natural monopoly's price be:A) e qual to average total cost where it intersects demand.B) e qual to marginal cost where it intersects demand.C) e qual to average variable cost where it intersects demand.D) e qual to the price the natural monopolist wants.Answer: BDiff: 2 Page Ref: 46465) T he price strategy to regulate a natural monopoly to produce as much as possible isto set price:A) e qual to average total cost where it intersects demand.B) e qual to marginal cost where it intersects demand.C) e qual to average variable cost where it intersects demand.D) e qual to the price the natural monopolist wants.Answer: ADiff: 2 Page Ref: 46466) W hat is a monopoly?Answer: A firm that is the only seller of a good or service with no close substitutes.Diff: 1 Page Ref: 44467) W hat is an example of a government barrier to entry?Answer: A patent or copyright.Diff: 1 Page Ref: 44568) W hat is a network externality barrier to entry?Answer: Where a good's demand depends on how many other consumers are using it.Diff: 2 Page Ref: 44869) W hat gives rise to a natural monopoly?Answer: Continuing economies of scale as a firm gets larger.Diff: 2 Page Ref: 44970) W hat is a public franchise?Answer: When a government allows only one legal provider of a good or service.Diff: 2 Page Ref: 44771) W hat is a public enterprise?Answer: When a government provides certain services directly to consumers.Diff: 2 Page Ref: 44772) H ow does an unregulated monopoly choose the profit maximizing output?Answer: By producing where marginal revenue equals marginal cost.Diff: 2 Page Ref: 45373) H ow does marginal revenue and average revenue for a monopolist compare?Answer: Marginal revenue is less than price which is equal to average revenue.Diff: 2 Page Ref: 45274) I s a monopolist a price taker like a perfectly competitive firm and if not, what is it?Answer: No, a monopoly is a price maker not a price taker.Diff: 2 Page Ref: 45675) W hat does a monopolist have to do to sell more units of its product?Answer: lower the priceDiff: 5 Page Ref: 45376) W hat happens to monopoly revenue when a monopolist sells more units of itsproduct?Answer: It is good that the monopolist sells more units, but it is bad that it receives less revenue from each unit than it would have received at the higher price.Diff: 2 Page Ref: 45277) I f a monopolist's marginal revenue is $15 and its marginal cost is $10, then whatshould the firm do?Answer: Produce and sell more of its product.Diff: 2 Page Ref: 45378) H ow does an unregulated profit maximizing monopoly affect economic efficiencycompared to a perfectly competitive industry?Answer: Economic efficiency is reduced because there is deadweight loss.Diff: 2 Page Ref: 45679) H ow do the price and quantity of a monopoly compare to that of a perfectlycompetitive industry?Answer: Monopolists sells a smaller quantity and the price is higher than with competition..Diff: 2 Page Ref: 45680) W hat are the two ways the government controls monopolies?Answer: Antitrust laws and local or state regulation of natural monopolies.Diff: 2 Page Ref: 45881) W hen did antitrust control begin?Answer: When the Sherman Act was passed in 1890.Diff: 1 Page Ref: 45982) W hat is a horizontal merger?Answer: A merger between firms producing in the same industry.Diff: 2 Page Ref: 46083) W hat is a vertical merger?Answer: A merger between firms at different stages of production.Diff: 2 Page Ref: 46084) I s competition always good for the economy and explain why or why not?Answer: In a natural monopoly industry, competition would result in higher costs and higher prices meaning competition may not always be good for the economy.Diff: 2 Page Ref: 46485) W hat are the rules for profit maximization for a monopoly?Answer: Produce the output where marginal revenue equals marginal cost or the last whole unit of output where marginal revenue is still greater than marginal costand look at demand to determine what price to charge.Diff: 2 Page Ref: 455。