国际经济学作业答案-第八章
国际经济学第三版习题答案
第一章练习与答案此答案有很多这是提示，具体的可以从课本中找。
而且重点标记的是考试常考的！1．为什么说在决定生产和消费时，相对价格比绝对价格更重要？答案提示：当生产处于生产边界线上，资源则得到了充分利用，这时，要想增加某一产品的生产，必须降低另一产品的生产，也就是说，增加某一产品的生产是有机会机本（或社会成本）的。
生产可能性边界上任何一点都表示生产效率和充分就业得以实现，但究竟选择哪一点，则还要看两个商品的相对价格，即它们在市场上的交换比率。
相对价格等于机会成本时，生产点在生产可能性边界上的位置也就确定了。
所以，在决定生产和消费时，相对价格比绝对价格更重要。
2．仿效图1—6和图1—7，试推导出Y商品的国民供给曲线和国民需求曲线。
答案提示：3．在只有两种商品的情况下，当一个商品达到均衡时，另外一个商品是否也同时达到均衡？试解释原因。
答案提示：4．如果生产可能性边界是一条直线，试确定过剩供给（或需求）曲线。
答案提示：5．如果改用Y商品的过剩供给曲线（B国）和过剩需求曲线（A国）来确定国际均衡价格，那么所得出的结果与图1—13中的结果是否一致？答案提示：国际均衡价格将依旧处于贸易前两国相对价格的中间某点。
6．说明贸易条件变化如何影响国际贸易利益在两国间的分配。
答案提示：一国出口产品价格的相对上升意味着此国可以用较少的出口换得较多的进口产品，有利于此国贸易利益的获得，不过，出口价格上升将不利于出口数量的增加，有损于出口国的贸易利益；与此类似，出口商品价格的下降有利于出口商品数量的增加，但是这意味着此国用较多的出口换得较少的进口产品。
对于进口国来讲，贸易条件变化对国际贸易利益的影响是相反的。
7．如果国际贸易发生在一个大国和一个小国之间，那么贸易后，国际相对价格更接近于哪一个国家在封闭下的相对价格水平？答案提示：贸易后，国际相对价格将更接近于大国在封闭下的相对价格水平。
8．根据上一题的答案，你认为哪个国家在国际贸易中福利改善程度更为明显些？答案提示：小国。
国际经济学第五版关键词、复习与思考答案：第8章 贸易保护政策的理论依据
第八章贸易保护政策的理论依据一、关键词1. 最优关税。
最优关税是指使本国福利达到最大的关税水平。
2. 幼稚产业。
幼稚产业是指处于成长阶段、尚未成熟但具有潜在优势的产业。
3. 穆勒标准。
穆勒标准认为, 当某产业的规模较小、生产成本高于国际市场价格时，如果任其参与自由竞争，该产业必然会亏损。
如果政府给予一段时间的保护，使该产业能够发展壮大，以充分实现规模经济、降低成本，以致该产业最终能够完全面对自由竞争并且获得利润，那么该产业就可以作为幼稚产业加以扶植。
其强调的是将来成本上的优势地位。
4. 巴斯塔布尔标准。
巴斯塔布尔标准认为，判断一种产业是否属于幼稚产业，不仅要看将来是否具有竞争优势，还要将保护成本与该产业未来所能获得的预期利润的贴现值加以比较之后才能确定。
如果未来预期利润的贴现值小于目前的保护成本，那么对该产业进行保护是得不偿失的，因此该产业就不能作为幼稚产业加以保护；如果未来预期利润的贴现值大于保护成本，那么对该产业加以保护才是值得的。
5. 肯普标准。
肯普标准认为，如果某一产业能够产生外部经济效应，即使该产业不符合巴斯塔布尔标准，但是只要在其保护之后，能够产生显著的外部经济效应，就仍有保护的必要。
6. 自我加强的比较优势标准。
克鲁格曼认为，在许多情况下，通过正反馈过程，产业似乎能创造自己的比较优势。
假设一个国家由于某种原因，某特定产业特别强大，那么这种情况可以导致外部经济，从而加强该产业的力量。
如果外部经济非常强大，国际分工模式就难以确定。
在产业成长的初期，或者在现存的比较优势模式不再适应技术或市场变化的转型时期，一个国家可能因为偶然的历史事件或者政府的支持，在某产业获得领先地位。
这种地位一旦确立，它就能够自我加强，并且一直存在下去。
7. 战略性贸易政策。
战略性贸易政策是指一国政府运用政策干预手段，把国外垄断企业的一部分垄断利润转移给本国企业或消费者的政策。
之所以称为“战略性”，是因为这种政府政策能够改变国内外垄断企业之间的竞争关系，使得本国垄断企业在国际市场的竞争中处于优势地位，并且获得国内经济利益。
国际经济学第九版英文课后答案第8单元
国际经济学第九版英文课后答案第8单元*CHAPTER 8 (Core Chapter)TRADE RESTRICTIONS: TARIFFSOUTLINE8.1 Introduction8.2 Partial Equilibrium Analysis of a T ariffCase Study 8-1: Average Tariff on Non-Agricultural Products in Major Developed CountriesCase Study 8-2: Average Tariff on Non-Agricultural Products in Some MajorDeveloping Countries8.2a Partial Equilibrium Effects of a Tariff8.2b Effects of a Tariff on Producer and Consumer Surplus8.2c Costs and Benefits of a TariffCase Study 8-3: The Welfare Effects of Liberalizing Trade in Some U.S. Products Case Study 8-4: The Welfare Effects of Liberalizing Trade in Some EU Products 8.3 The Theory of Tariff Structure8.3a The Rate of Effective Protection8.3b Generalization and Evaluation of the Theory of Effective ProtectionCase Study 8-5: Rising Tariff Rates with Degree of Domestic ProcessingCase Study 8-6: Structure of Tariffs on Industrial Products in U.S., EU, Japan, and Canada8.4 General Equilibrium Analysis of a T ariff in a Small Country8.4a General Equilibrium Effects of a T ariff in a Small Country8.4b Illustration of the Effects of a Tariff in a Small Country8.4c The Stolper-Samuelson Theorem8.5 General Equilibrium Analysis of a Tariff in a Large Country8.5a General Equilibrium Effects of a T ariff in a Large Country8.5b Illustration of the Effects of a Tariff in a Large Country8.6 The Optimum Tariff8.6a The Meaning of the Concept and Retaliation8.6b Illustration of the Optimum Tariff and RetaliationAppendix: A8.1 Partial Equilibrium Effects of a Tariff in a Large NationA8.2 Derivation of the Formula for the Rate of Effective ProtectionA8.3 The Stolper-Samuelson Theorem GraphicallyA8.4 Exception to the Stolper-Samuelson Theorem - The MetzlerParadoxA8.5 Short-run Effect of a Tariff on Factors' IncomeA8.6 Measurement of the Optimum T ariffKey TermsTrade or commercial policies Consumer surplusImport tariff Rent or producer surplusExport tariff Protection cost or deadweight loss of a tariff Ad valorem tariff Nominal tariffSpecific tariff Rate of effective protectionCompound tariff Domestic value addedConsumption effect of a tariff Prohibitive tariffProduction effect of a tariff Stolper-Samuelson theoremTrade effect of a tariff Metzler paradoxRevenue effect of a tariff Optimum tariffLecture Guide1.I would cover sections 1 and 2 and assign problems 1-2 in the first lecture. Themost difficult part of section 2 is the meaning and measurement of consumer and producer surplus. Since a clear understanding of the meaning and measurementof consumer and producer surplus is crucial in evaluating the effect of tariffs, Iwould explain t hese concepts very carefully.2.I would then cover section 3 and assign problems 3-6 in the second lecture. Thetheory of tariff structure is also very difficult and important, and so I would alsoexplain this concept very carefully. I found that the best way to explain it is byusing the simple example used in the text of the suit with and without importedinputs.3.The rest of the chapter can be skipped without loss of continuity by thoseInstructors who do not wish to cover the general equilibrium effects of tariffs. 4.For those Instructors who wish to cover the rest of the chapter, I would take upanother two lectures to do so. I would also assign and grade problems 8-14 tomake sure that students understand the material.5.In covering section 8.4, I would pay special attention to the explanation of Figure8-5 and to the Stolper-Samuelson theorem.6.In covering Section 8.6, please note that the optimum tariff can only be discussedintuitively without trade indifference curves (examined in Appendix A8.6). Answer to Problems1.a) Consumption is 70Y, production is 10Y and imports are 60Y (see Figure 1 onthe next page).b) Consumption is 60Y, production is 20Y and imports are 40Y (see Figure 1).c) The consumption effect is -10Y, the production effect is +10Y, the trade effectis -20Y and the revenue effect is $40 (see Figure 1).2. a) The consumer surplus is $245 without and $l80 with the tariff (see Figure 1).b)Of the increase in the revenue of producers with the tariff (as compared withtheir revenues under free trade), $l5 represents the increase in production costsand another $15 represents the increase in rent or producer surplus (see Figure1).c) The dollar value or the protection cost of the tariff is $l0 (see Figure 1).3. This will increase the rate of effective protection in the nation.4. a) g = 0.4 - (0.5)(0.4) = 0.4 - 0.2 = 0.2 = 40%1.0 - 0.5 0.5 0.55. a) g=60%b) g=80%c) g=0d) g=20%6. a) g=70%b) See the first paragraph of section 8.3b.7. See Figure 2.8.When Nation 1 (assumed to be a small nation) imposes an import tariff oncommodity Y, the real income of labor falls and that of capital rises.9.Py/Px rises for domestic producers and consumers. As production of Y (the K-intensive commodity) rises and that of X falls, the demand and income of K rises and that of L falls. Therefore, r rises and w falls.10.If Nation 1 were instead a large nation, then Nation 1's terms of trade rise and thereal income of L may also rise.India is more likely to restrict imports of K-intensive commodities in which India has a comparative disadvantage and this is likely to increase the return to capitaland reduce the return to labor according to the Stolper-Samuelson theorem.12. See Figure 3 on the previous page.13. See Figure 4.14. a) The volume of trade may shrink to zero (the origin of offer curves).App. 1. The more elastic S H and S F are, the lower is the free trade priceof the commodity and the lower is the increase in the domesticprice of the commodity as a result of the tariff.App. 2a. The supply curve of the nation for the commodity shifts upand to the left (as with the imposition of any tax); this does not affectthe consumption of the commodity with free trade, but it reducesdomestic production and increases imports of the commodity; italso increases the revenue effect and reduces producers' surplus.b)The imposition of a tariff on imported inputs going into the domestic productionof the commodity will have no effect on the size of the protection cost ordeadweight loss.App. 3. See Figure 5 (on the next page).App. 4. See Figure 6.App. 5. Real w will fall in terms of Y and rise in terms of X. On theother hand, r eal r will rise in terms of Y and fall in terms of X. Thiscan be seen by drawing a figure similar to Figure 8-10, but with theVMPLy curve shifting upward.App. 6a. See Figure 7.c) After Nation 1 has imposed an optimum tariff and Nation2 has retaliatedwith an optimum tariff of its own, the approximate terms of trade for Nation1 is 0.8, while the approximate terms of trade of Nation2 is 1.25.d) Nation 1's welfare declines from the reduction in the volume and in the termsof trade. Although nation 2's terms of trade are higher than under free trade,the volume of trade has shrunk so much that nation 2's welfare is also likelyto be lower than under free trade.Multiple-choice Questions1. Which of the following statements is incorrect?a. An ad valorem tariff is expressed as a percentage of the value of the traded commodityb. a specific tariff is expressed as a fixed sum of the value of the traded commodity.c. export tariffs are prohibited by the U.S. Constitution*d. The U.S. uses exclusively the specific tariff2. A small nation is one:a. which does not affect world price by its tradingb. which faces an infinitely elastic world supply curve for its import commodityc. whose consumers will pay a price that exceeds the world price by the amount of the tariff*d. all of the above3. If a small nation increases the tariff on its import commodity, its:a. consumption of the commodity increasesb. production of the commodity decreasesc. imports of the commodity increase*d. none of the above4.The increase in producer surplus when a small nation imposes a tariff is measured bythe area:*a. to the left of the supply curve between the commodity price with and without the tariffb. under the supply curve between the quantity produced with and without the tariffc. under the demand curve between the commodity price with and without the tariffd. none of the above.5. If a small nation increases the tariff on its import commodity:*a. the rent of domestic producers of the commodity increasesb. the protection cost of the tariff decreasesc. the deadweight loss decreasesd. all of the above6.Which of the following statements is incorrect with respect to the rate of effectiveprotection?a. for given values of ai and ti, g is larger the greater is tb. for a given value of t and ti, g is larger the greater is a ic. g exceeds, is equal to or is smaller than t, as t i is smaller than, is equal to or is larger than t*d. when a i t i exceeds t, the rate of effective protection is positive7. With a i=50%, t i=0, and t=20%, g is:*a. 40%b. 20%c. 80%d. 08. The imposition of an import tariff by a small nation:*a. increases the relative price of the import commodity for domestic producers and consumersb. reduces the relative price of the import commodity for domestic producers and consumersc. increases the relative price of the import commodity for the nation as a wholed. any of the above is possible9. The imposition of an import tariff by a small nation:a. increases the nation's welfare*b. reduces the nation's welfarec. leaves the nation's welfare unchangedd. any of the above is possible10. According to the Stolper-Samuelson theorem, theimposition of a tariff by a nation:a. increases the real return of the nation's abundant factor*b. increases the real return of the nation's scarce factorc. reduces the real return of the nation's scarce factord. any of the above is possible11. The imposition of an import tariff by a nation results in:a. an increase in relative price of the nation's import commodityb. an increase in the nation's production of its importable commodityc. reduces the real return of the nation's abundant factor*d. all of the above12. The imposition of an import tariff by a nation can be represented by a rotation of the: *a. nation's offer curve away from the axis measuring the commodity of its comparative advantageb. the nation's offer curve toward the axis measuring the commodity of its comparative advantagec. the other nation's offer curve toward the axis measuring the commodity of its comparative advantaged. the other nation's offer curve away from the axis measuring the commodity of its comparative advantage13. The imposition of an import tariff by a large nation:a. increases the nation's terms of tradeb. reduces the volume of tradec. may increase or reduce the nation's welfare*d. all of the above14. The imposition of an optimum tariff by a large nation:a. improves its terms of tradeb. reduces the volume of tradec. increases the nation's welfare*d. all of the above15. The optimum tariff for a small nation is:a. 100%b. 50%*c. 0d. depends on elasticities。
国际经济学课程学习题集及参考答案
国际经济学习题集及参考答案一、填空、选择、判断题（每题1分）：第一章：1、国际贸易理论以微观经济学原理为基础，讨论世界范围内的资源配置问题。
2、最常用国际贸易模型的结构形式为两个国家、两种产品（或部门）和两种要素。
3、在完竞争的假设前提下，封闭条件下的相对价格是国际贸易产生的基础。
4、国家间的供给、需求方面的差异是造成相对价格的根源。
5、贸易后，国际均衡价格由两国的供需共同决定，国际均衡价格处于两国封闭下的相对价格之间。
6、国际贸易利益包括两个部分：来自交换的利益和来自专业化的利益。
7、贸易理论主要围绕三个问题展开：国际贸易的格局、国际贸易的条件、国际贸易的收益。
第二章：1、斯密的绝对优势论认为国际贸易的基础是各国之间劳动生产率的绝对差别；李嘉图的比较优势论认为国际贸易的基础是各国之间劳动生产率的相对差别。
2、哈伯勒首先用机会成本概念来阐明比较优势论。
3、重商主义者提倡的国家经济政策有：限制进口和鼓励出口，采取奖金、退税、协定和殖民地贸易等措施鼓励出口。
4、李嘉图认为在国际贸易中起决定作用的不是绝对成本，而是相对成本。
5、斯密的绝对优势论认为国际贸易的基础是各国之间劳动生产率的绝对差别；劳动生产率的比较优势论认为国际贸易的基础是各国之间劳动生产率的相对差别。
6、在李嘉图模型中，生产可能性边界线方程是一个线性方程式，表示A、B两国的PPF曲线是一条直线段。
7、重商主义者提倡的国家经济政策有：限制进口和鼓励出口，采取奖金、退税、协定和殖民地贸易等措施鼓励出口。
8、李嘉图认为在国际贸易中起决定作用的不是绝对成本，而是相对成本。
9、机会成本概念表明：彼种选择的机会成本就构成此种选择的机会成本。
选择题：1、首先用机会成本理论来解释比较优势原理的学者是： C、A、李嘉图B、罗布津斯基C、哈伯勒D、穆勒第三章：1、要素禀赋理论最初是由赫克歇尔和俄林提出的，后经萨缪尔森等人加工不断完善。
2、要素禀赋理论由H-O定理、要素价格均等化定理和罗伯津斯基定理、斯托伯-萨缪尔森定理等构成3、要素价格均等化理论指出国际贸易通过商品价格的均等化会导致要素价格的均等化，从而在世界范围实现资源的最佳配置。
国际经济学课后习题及答案(2)
第一章国际贸易理论的微观基础1．为什么说在决定生产和消费时，相对价格比绝对价格更重要？答案提示：当生产处于生产边界线上，资源则得到了充分利用，这时，要想增加某一产品的生产，必须降低另一产品的生产，也就是说，增加某一产品的生产是有机会机本（或社会成本）的。
生产可能性边界上任何一点都表示生产效率和充分就业得以实现，但究竟选择哪一点，则还要看两个商品的相对价格，即它们在市场上的交换比率。
相对价格等于机会成本时，生产点在生产可能性边界上的位置也就确定了。
所以，在决定生产和消费时，相对价格比绝对价格更重要。
2．仿效图1—6和图1—7，试推导出Y商品的国民供给曲线和国民需求曲线。
答案提示：参照教材中第一章第二节（第26页）的内容，将图1-6（a）中，以横坐标表示Y商品的供给，以纵坐标表示X商品供给，得出相应的生产可能性曲线；然后将图1-6（b）中，以横坐标表示Y商品的供给，以纵坐标表示Y的相对价格P Y/P X，通过类似推导可得出国民供给曲线，国民需求曲线做类似推导即可求出。
3．在只有两种商品的情况下，当一个商品达到均衡时，另外一个商品是否也同时达到均衡？试解释原因。
答案提示：两种商品同时达到均衡。
当一种商品达到均衡时，该商品的相对价格、均衡供给与需求、均衡状态下对生产要素的需求与供给都得以确定，则可得到另一种商品的相对价格、生产要素需求，从而确定该商品的均衡状态下供给和需求。
4．如果生产可能性边界是一条直线，试确定过剩供给（或需求）曲线。
答案提示：参照教材图1-12、图1-13国民供给曲线与国民需求曲线的推导；过剩供给（或需求）曲线的形状，参见教材第30页。
5．如果改用Y商品的过剩供给曲线（B国）和过剩需求曲线（A国）来确定国际均衡价格，那么所得出的结果与图1—13中的结果是否一致？答案提示：相一致。
国际均衡价格将依旧处于贸易前两国相对价格的中间某点。
6．说明贸易条件变化如何影响国际贸易利益在两国间的分配。
国际经济学的课后答案及选择
第一章绪论(一) 选择题1.国际经济学在研究资源配置时，是以（D.政府）作为基本的经济单位来划分的。
2.国际经济学研究的对象是（D 各国之间的经济活动和经济关系）3.从国际间经济资源流动的难易度看，（C人员）流动最容易（二）问答题1．试述国际经济学和国内经济学的关系。
答案提示：（1）联系：国际经济学与国内经济学研究的经济活动是相似的，面临的主要问题也是相似的；（2）最主要的区别是国际经济的民族国家性。
第二章古典的国际贸易理论（一）选择题本国生产A、B、C、D四种产品的单位劳动投入分别为1、2、4、15，外国生产这四种产品的单位劳动投入分别为12、18、24、30，根据李嘉图模型，本国在哪种产品上拥有最大比较优势？在哪种产品上拥有最大比较劣势？（（ｃ）Ａ、Ｄ）答案：Ｃ（二）问答题1．亚当·斯密对国际贸易理论的主要贡献有哪些？答案提示：亚当·斯密的主要贡献是：（1）抨击了重商主义；（2）提出了绝对优势之一概念；（3）强调国际分工是使国民财富增加的最重要手段。
2．绝对优势理论和比较优势理论的区别是什么？答案提示：（1）绝对优势理论强调，国与国之间劳动生产率的绝对差异导致的技术水平的差异是产生国际贸易的主要原因；（2）比较优势理论强调，劳动生产率的相对差异导致的技术水平的差异是产生国际贸易的主要原因。
第二章问答题2．假设A、B两国的生产技术条件如下所示，那么两国还有进行贸易的动机吗？解释原因。
答案提示：从绝对优势来看，两国当中A国在两种产品中都有绝对优势；从比较优势来看，两国不存在相对技术差异。
所以，两国没有进行国际贸易的动机。
3．证明即使一国在某一商品上具有绝对优势，也未必具有比较优势。
答案提示：如果ax>bx，则称A国在X生产上具有绝对优势；如果ax/ay>bx/by，则称A国在X生产上具有比较优势。
当 ay=by或者ay<by的时候，由ax>bx可以推出ax/ay>bx/by，但是，当ay>by的时候，ax>bx不能保证。
国际经济学课后答案
(1),本国共有1200单位的劳动，能生产两种产品：苹果和香蕉。
苹果的单位产品 劳动投入是3,香蕉的单位劳动产品投入时 2。
a. 画出本国的生产可能性边界。
b. 用香蕉衡量的苹果的机会成本是多少c. 贸易前，苹果对香蕉的相对价格是多少为什么答：a.本国的生产可能性边界曲线是直线，在400( 1200/3)处与苹果轴相截，(1200/2 )处与香蕉轴相截，如图 2-7所b.用香蕉衡量苹果的机会成本是 3/2。
单位苹果需要3单位的劳动，生产1单位单位的劳动可以被用来生产 3/2单位的香蕉c.劳动的流动性可以使得各个部门的工资趋同，竞争可以使得商品的价格等于它们的生产成本。
这样，相对价格等于相对成本，而相对成本等于工资乘以苹果的单位劳动产品投入。
因为各个部门工资相等，所以价格比率等于单位产品劳动投入的比率，即生产苹果所需的3单位劳动与生产香蕉所需的 2单位劳动比率。
(2)假设本国的情况和习题 1相同。
外国拥有800单位的劳动，外国苹果的 单位劳动投入是5,香蕉的单位产品劳动投入是 1。
a. 画出外国的生产可能性边界。
需要2单位的劳动 如果放弃1单位苹果的生产, 这将释放国生产可能勺劳动。
一条 在600 示。
生产1香蕉b. 画出世界相对供给曲线。
答：a.外国的生产可能性边界曲线是一条直线，在160 (800/5 )处与苹果轴相截，在800（800/1）处与香蕉轴相截。
如图2-8所示b.世界相对供给曲线可以由苹果和香蕉的相对价格和相对供给量绘出。
如图2-9。
从图2-9可以看出，苹果对香蕉的最低相对价格是3/2图在这个价格相对供给曲的世界相对供给曲线是水平曲在3/2的木酣价格上世界相国对苹果的最大供给量是400,外国对香蕉的供给量是800,这时，相对供给量为1/2。
只要相对价格保持在3/2和5之间，产量相对供给量就不变。
如果相对价格成为5,两个国家都会生产苹果，香蕉的产量为零。
这时，相对供给曲线是水平的。
国际经济学课程学习题集与参考答案
国际经济学习题集及参考答案一、填空、选择、判断题（每题1分）：第一章：1、国际贸易理论以微观经济学原理为基础，讨论世界围的资源配置问题。
2、最常用国际贸易模型的结构形式为两个国家、两种产品（或部门）和两种要素。
3、在完竞争的假设前提下，封闭条件下的相对价格是国际贸易产生的基础。
4、国家间的供给、需求方面的差异是造成相对价格的根源。
5、贸易后，国际均衡价格由两国的供需共同决定，国际均衡价格处于两国封闭下的相对价格之间。
6、国际贸易利益包括两个部分：来自交换的利益和来自专业化的利益。
7、贸易理论主要围绕三个问题展开：国际贸易的格局、国际贸易的条件、国际贸易的收益。
第二章：1、斯密的绝对优势论认为国际贸易的基础是各国之间劳动生产率的绝对差别；嘉图的比较优势论认为国际贸易的基础是各国之间劳动生产率的相对差别。
2、哈伯勒首先用机会成本概念来阐明比较优势论。
3、重商主义者提倡的国家经济政策有：限制进口和鼓励出口，采取奖金、退税、协定和殖民地贸易等措施鼓励出口。
4、嘉图认为在国际贸易中起决定作用的不是绝对成本，而是相对成本。
5、斯密的绝对优势论认为国际贸易的基础是各国之间劳动生产率的绝对差别；劳动生产率的比较优势论认为国际贸易的基础是各国之间劳动生产率的相对差别。
6、在嘉图模型中，生产可能性边界线方程是一个线性方程式，表示A、B两国的PPF曲线是一条直线段。
7、重商主义者提倡的国家经济政策有：限制进口和鼓励出口，采取奖金、退税、协定和殖民地贸易等措施鼓励出口。
8、嘉图认为在国际贸易中起决定作用的不是绝对成本，而是相对成本。
9、机会成本概念表明：彼种选择的机会成本就构成此种选择的机会成本。
选择题：1、首先用机会成本理论来解释比较优势原理的学者是： C、A、嘉图B、罗布津斯基C、哈伯勒D、穆勒第三章：1、要素禀赋理论最初是由赫克歇尔和俄林提出的，后经萨缪尔森等人加工不断完善。
2、要素禀赋理论由H-O定理、要素价格均等化定理和罗伯津斯基定理、斯托伯-萨缪尔森定理等构成3、要素价格均等化理论指出国际贸易通过商品价格的均等化会导致要素价格的均等化，从而在世界围实现资源的最佳配置。
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Chapter 8 The Instruments of Trade PolicyMultiple Choice Questions1. Specific tariffs are(a) import taxes stated in specific legal statutes.(b) import taxes calculated as a fixed charge for each unit of imported goods.(c) import taxes calculated as a fraction of the value of the imported goods.(d) the same as import quotas.(e) None of the above.Answer: B2. Ad valorem tariffs are(a) import taxes stated in ads in industry publications.(b) import taxes calculated as a fixed charge for each unit of imported goods.(c) import taxes calculated as a fraction of the value of the imported goods.(d) the same as import quotas(e) None of the above.Answer: C3. The excess supply curve of a product we (H) import from foreign countries (F)increases as(a) excess demand of country H increases.(b) excess demand of country F increases.(c) excess supply of country H increases.(d) excess supply of country F increases.(e) None of the above.Answer: D4. If a good is imported into (large) country H from country F, then the impositionof a tariffin country H(a) raises the price of the good in both countries (the “Law of One Price”).(b) raises the price in country H and cannot affect its price in country F.(c) lowers the price of the good in both countries.(d) lowers the price of the good in H and could raise it in F.Chapter 8 The Instruments of Trade Policy 93(e) raises the price of the good in H and lowers it in F.Answer: E94 Krugman/Obstfeld •Seventh Edition5. If a good is imported into (small) country H from country F, then the impositionof a tariff In country H(a) raises the price of the good in both countries (the “Law of One Price”).(b) raises the price in country H and does not affect its price in country F.(c) lowers the price of the good in both countries.(d) lowers the price of the good in H and could raise it in F.(e) raises the price of the good in H and lowers it in F.Answer: B6. If a good is imported into (large) country H from country F, then the impositionof a tariff in country H in the presence of the Metzler Paradox,(a) raises the price of the good in both countries (the “Law of One Price”).(b) raises the price in country H and cannot affect its price in country F.(c) lowers the price of the good in both countries.(d) lowers the price of the good in H and could raise it in F.(e) raises the price of the good in H and lowers it in F.Answer: C7. The effective rate of protection measures(a) the “true” ad valorum value of a tariff.(b) the quota equivalent value of a tariff.(c) the efficiency with which the tariff is collected at the customhouse.(d) the protection given by the tariff to domestic value added.(e) None of the above.Answer: D8. If the tariff on computers is not changed, but domestic computer producers shiftfrom domestically produced semiconductors to imported components, then theeffective rate of protection in the computer industry will(a) increase.(b) decrease(c) remain the same.(d) depend on whether computers are PCs or “Supercomputers.”(e) None of the above.Answer: A9. If the tariff on computers is not changed, but the government then adds hithertononexistent tariffs on imported semi-conductor components, then the effective rate of protection in the computer industry will(a) increase.(b) decreaseChapter 8 The Instruments of Trade Policy 93(c) remain the same.(d) depend on whether computers are PCs or “Supercomputers.”(e) None of the above.Answer: B94 Krugman/Obstfeld •Seventh Edition10. If a small country imposes a tariff, then(a) the producers must suffer a loss.(b) the consumers must suffer a loss.(c) the government revenue must suffer a loss.(d) the demand curve must shift to the left.(e) None of the above.Answer: B11. If a large country imposes a tariff, then(a) the producers must suffer a loss.(b) the consumers must suffer a loss.(c) the government revenue must suffer a loss.(d) the demand curve must shift to the left.(e) None of the above.Answer: E12. The imposition of tariffs on imports results in deadweight (triangle) losses.These are(a) production and consumption distortion effects.(b) redistribution effects.(c) revenue effects(d) efficiency effects.(e) None of the above.Answer: E13. Suppose the United States eliminates its tariff on ball bearings used inproducing exports. Ball bearing prices in the United States would be expected to(a) increase, and the foreign demand for U.S. exports would increase.(b) decrease, and the foreign demand for U.S. exports would increase.(c) increase, and the foreign demand for U.S. exports would decrease.(d) decrease, and the foreign demand for U.S. exports would decrease.(e) None of the above.Answer: C14. A specific tariff provides home producers more protection when(a) the home market buys cheaper products rather than expensive products.(b) it is applied to a commodity with many grade variations.(c) the home demand for a good is elastic with respect to price changes.(d) it is levied on manufactured goods rather than primary products.(e) None of the above.Answer: AChapter 8 The Instruments of Trade Policy 9315. A lower tariff on imported steel would most likely benefit(a) foreign producers at the expense of domestic consumers.(b) domestic manufacturers of steel.(c) domestic consumers of steel.(d) workers in the steel industry.(e) None of the above.Answer: C16. When a government allows raw materials and other intermediate products to entera country duty free, this generally results in a(an)(a) effective tariff rate less than the nominal tariff rate.(b) nominal tariff rate less than the effective tariff rate.(c) rise in both nominal and effective tariff rates.(d) fall in both nominal and effective tariff rates.(e) None of the above.Answer: B17. Of the many arguments in favor of tariffs, the one that has enjoyed significanteconomic justification has been the(a) cheap foreign labor argument.(b) infant industry argument.(c) even playing field argument.(d) balance of payments argument(e) domestic living standard argument.Answer: B18. The main redistribution effect of a tariff is the transfer of income from(a) domestic producers to domestic buyers.(b) domestic buyers to domestic producers.(c) domestic producers to domestic government.(d) domestic government to domestic consumers.(e) None of the above.Answer: B19. The principle benefit of tariff protection goes to(a) domestic consumers of the good produced.(b) foreign consumers of the good produced.(c) domestic producers of the good produced.(d) foreign producers of the good produced.(e) None of the above.Answer: C94 Krugman/Obstfeld •Seventh Edition20. As globalization tends to increase the proportion of imported inputs relative todomestically supplied components,(a) the nominal tariff automatically increases.(b) the rate of (effective) protection automatically decreases.(c) the nominal tariff automatically decreases.(d) the rate of (effective) protection automatically increases.(e) None of the above.Answer: D21. Which of the following policies permits a specified quantity of goods to beimported at one tariff rate and a higher tariff rate to imports above thisquantity?(a) Import tariff(b) Voluntary exports restraint(c) Tariff quota(d) Ad valorum tariff(e) None of the above.Answer: C22. Should the home country be “large” relative to its trade partners, itsimposition of a tariff on imports would lead to an increase in domestic welfare if the terms of the trade rectangle exceed the sum of the(a) revenue effect plus redistribution effect.(b) protective effect plus revenue effect.(c) consumption effect plus redistribution effect.(d) protective distortion effect plus consumption distortion effect.(e) None of the above.Answer: D23. A problem encountered when implementing an “infant industry” tariff is that(a) domestic consumers will purchase the foreign good regardless of the tariff.(b) the industry may never “mature.”(c) most industries require tariff protection when they are mature.(d) the tariff may hurt the industry’s domestic sales.(e) None of the above.Answer: B24. Which of the following is a fixed percentage of the value of an imported product?(a) Specific tariff(b) Ad valorem tariff(c) Nominal tariffChapter 8 The Instruments of Trade Policy 93(d) Effective protection tariff(e) None of the above.Answer: B94 Krugman/Obstfeld •Seventh Edition25. A tax of 20 cents per unit of imported garlic is an example of a(n)(a) specific tariff.(b) ad valorem tariff.(c) nominal tariff.(d) effective protection tariff.(e) None of the above.Answer: A26. A tax of 20 percent per unit of imported garlic is an example of a(n)(a) specific tariff.(b) ad valorem tariff.(c) nominal tariff.(d) effective protection tariff.(e) None of the above.Answer: B27. Which type of tariff is forbidden in the United States on Constitutional grounds?(a) Import tariff(b) Export tariff(c) Specific tariff(d) Prohibitive tariff(e) None of the above.Answer: B28. The deadweight loss of a tariff(a) is a social loss because it promotes inefficient use of national resources.(b) is a social loss because it reduces the revenue of the government.(c) is not a social loss because it merely redistributes revenue from one sectorto another.(d) is not a social loss bacuase it is paid for by rich corporations.(e) None of the above.Answer: A29. Tariffs are not defended on the ground that they(a) improve the terms of trade of foreign nations.(b) protect jobs and reduce unemployment.(c) promote growth and development of young industries.(d) prevent over-dependence of a country on only a few industries.(e) None of the above.Answer: AChapter 8 The Instruments of Trade Policy 9330. The most vocal political pressure for tariffs is generally made by(a) consumers lobbying for export tariffs.(b) consumers lobbying for import tariffs.(c) consumers lobbying for lower import tariffs.(d) producers lobbying for export tariffs.(e) producers lobbying for import tariffs.Answer: E31. A policy of tariff reduction in the computer industry is(a) in the interest of the United States as a whole and in the interest ofcomputer producing regions of the country.(b) in the interest of United States as a whole but not in the interest ofcomputer producing regions of the country.(c) not in the interest of the United States as a whole but in the interests ofcomputer producing regions of the country.(d) not in the interest of the United States as a whole and not in the interestsof computer consumers.(e) None of the above.Answer: B32. The fact that industrialized countries levy very low or no tariff on rawmaterials and semi processed goods(a) helps developing countries export manufactured products.(b) has no effect on developing country exports.(c) hurts developing country efforts to export manufactured goods.(d) hurts developing country efforts to export raw materials.(e) None of the above.Answer: C33. The Metzler Paradox(a) explains why the United States uses both specific and ad valorum tariffs.(b) explains why the United States uses many none-tariff barriers to imports.(c) refers to the fact that the United States exported labor-intensive goods.(d) is not considered to be of practical application in the real world.(e) None of the above.Answer: D34. The Metzler Paradox(a) could theoretically happen when a small country levies a tariff.(b) refers to a situation when an Optimal Tariff hurts a country’s economicwelfare.(c) refers to a situation when the imposition of a tariff lowers domestic prices.(d)refers to a situation when the imposition of a tariff helps foreign exporters.(e) None of the above.Answer: C35. An Optimal Tariff(a) could theoretically happen when a small country levies a tariff.(b) refers to a situation when a tariff hurts a country’s economic welfare.(c) refers to a situation when the imposition of a tariff lowers domestic prices.(d)refers to a situation when the imposition of a tariff helps foreign exporters.(e) None of the above.Answer: E36. An Optimal Tariff is considered unlikely to be observed in the real worldbecause of(a) The Metzler Paradox.(b) it is practically impossible to define optimality in trade policy terms.(c) the likelihood of foreign repercussions.(d) real countries are considered to be “small” in the world trade context.(e) None of the above.Answer: C37. In an inflationary environment, then over time(a) A specific tariff will tend to raise more revenue than an ad valorum tariff.(b) An ad valorum tariff will tend to raise more revenue than a specific tariff(c) An optimum tariff will tend to raise more revenue than an escalating tariff(d) A tariff quota will tend to raise more revenue than a specific tariff.(e) None of the aboveAnswer: B38. The imposition of tariffs will help a nation attain which of the following goals?(a) Decreased domestic consumer prices(b) Increased domestic employment(c) Increased amount and variety of goods available for consumers(d) Increased competition between domestic and foreign producers(e) None of the aboveAnswer: E39. Tariff rates on products imported into the U.S.(a) have dropped substantially over the past 50 years.(b) were prohibited by the constitution(c) reached an all time high in 2002.(d) have risen steadily since 1920(e) None of the aboveAnswer: A40. What is a true statement concerning the imposition in the U.S. of a tariff onsteel?(a) It lowers the price of cheese domestically(b) It raises the price of cheese internationally(c) It raises revenue for the government(d) It will always result in retaliation from abroad(e) None of the aboveAnswer: C41. An important difference between tariffs and quotas is that tariffs(a) raise the price of the good(b) generate tax revenue for the government(c) stimulate international trade(d) help domestic producers(e) None of the aboveAnswer: BEssay Questions1. Economic theory in general, and trade theory in particular are replete withequivalencies. For example, it is argued that for any specific tariff one can find an equivalent ad valorum tariff; and that for any quota one can calculate a tariff equivalent. Discuss conditions or situations under which a specific and an ad valorum tariff are not equivalent. Discuss conditions or situations when a tariff and a quota are not equivalent.Answer: E.g., during a period of price inflation, an ad valorum tariff would become increasingly more effective. The government does not receive anyof the quota revenues, unless the import licenses are sold or auctioned.2. The Metzler Paradox is a special case of the optimum tariff concept. Discussthis assertion. Would the optimum tariff tend to be a high one or a low one in the case where this paradox exists? What conditions would be needed in theinternational ma rkets for a country’s exports for this paradox to exist? Why do you suppose empirical support for the existence of this paradox has not beenforthcoming to date?Answer: The Metzler Paradox describes an unlikely situation in which the imposition of a tarif f not only improves a country’s welfare, but alsoimproves that of its domestic consumers. If this paradox were presentthen the magnitude of the optimum tariff would tend to be large, sincethe welfare decreasing decrease in imports is not present in this case(the imports actually increase, as world prices drastically drop). TheMetzler Paradox could occur only if the foreign offer curves areinelastic. It is not likely to be observed because trade elasticitiestend to be relatively large. Also, were it to exist, its activation by alarge country would tend to evoke foreign retaliation.3. Some argue that tariffs always hurt the imposing country’s economic welfare,and are typically designed to shift resources from one sector to another,protected or preferred one, within an economy. Find and discuss a counterexample to this argument.Answer: The optimum tariff is theoretically a first-best trade policy.4. The effective rate of protection is a weighted average of nominal tariffs andtariffs on imported inputs. It has been noted that in most industrializedcountries, the nominal tariffs on raw materials or intermediate components or products are lower than on final-stage products meant for final markets. Whywould countries design their tariff structures in this manner? Who tends to be helped, and who is harmed by this cascading tariff structure?Answer: The cascading tariff structure is probably the result of systematic lobbying on the part of manufacturing interests and lobbies to lowercosts of production (in terms of imported inputs). The end result is infact to create effective rates of protection for downstream, or finalmanufacturing processes that are often much higher than nominal tariffson these products. An important group, which is hurt by this areexporters of raw materials and components in developing countries.5. The two deadweight triangles are the Consumption distortion and Productiondistortion losses. It is easy to understand why the Consumption distortionconstitutes a loss for society. After all it raises the prices of goods toconsumers, and even causes some consumers to drop out of the market altogether.It seems paradoxical that the Production distortion is considered an equivalent burden on society. After all, in this case, profits increase, and additionalproduction (with its associated employment) comes on line. This would seem to be an offset rather than an addition to the burden or loss borne by society.Explain why the Production distortion is indeed a loss to society, and what is wrong with the logic that leads to the apparent paradox.Answer: The Production Distortion represents an inefficient shift of society’s resources to produce a good, which it could not sell profitably at worldprices. Since (with full employment assumed) these resources wereformerly used to produce export goods, which could compete profitably,the net result is a loss in real income to the country.6. It is argued that a tariff may help promote employment in a single industry, butis not likely to help employment in general. Discuss.Answer: A general tariff on all imports is equivalent to a depreciation in the value of the country’s currency. It would raise the prices of allimports, and have a considerable income effect. This income effect willhave a negative effect on total consumption of the import-competingsector (as well as the exportables and non-tradables). In addition,under conditions of a flexible exchange rate regime (assuming theMarshal-Lerner Conditions hold) it will lower the supply of thecountry’s currency in the foreign exchange market, and hence cause anappreciation of the currency. This will harm the country’s exports, andnegatively affect this sector’s employment.Quantitative/Graphing Problems1. In the Figure above, in the absence of Trade how many Widgets does this countryproduce and consume?Answer: 602. In the absence of trade what is the country’s consumer plus producer surplus?Answer: $180, $1803. With free trade and no tariffs, what is the quantity of Widgets imported?Answer: 1004. With a specific tariff of $3 per unit, what is the quantity of Widget imports?Answer: 805. The loss of Consumer Surplus due to the tariff equalsAnswer: $2306. The lowest specific tariff which would be considered prohibitive isAnswer: $5。