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中国大学MOOC微观经济学（双语）作业答案

微观经济学（双语）

微信公众号:九八五题库

平台: 超星学习通

题目如下：

1. 1. 【多选题】How people interact

A. Trade can make everyone better off.

B. Rational people think at the margin.

C. Government can sometimes improve market outcomes.

D. The cost of somethings is what you give up to get it.

答案: Trade can make everyone better off.# Government can sometimes improve market outcomes.

2. 2. 【单选题】Does more hiring mean lower unemployment?

A. Ture.

B. False.

答案: Ture.

3. 3. 【单选题】Market are not usually a good way to organize economic activity.

A. Ture.

B. False.

答案: False.

4. 4. 【单选题】Are economic goods scarce?

A. Yes.

B. No.

答案: Yes.

5. 5. 【单选题】A country's standard of living depends on its ability to produce goods and services, is it right?

A. Ture.

B. False.

答案: Ture.

6. 1. 【判断题】Governments can sometimes improve market outcomes.

答案: 正确

7. 2. 【判断题】Marginal change is not a small incremental adjustment to a plan of action.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

8. 1. 【单选题】If a study by medical researchers found that brown sugar caused weight loss while white sugar caused weight gain, then we likely would see

A. an increase in demand for brown sugar and a decrease in demand for white sugar.

B. a decrease in demand for brown sugar and an increase in demand for white sugar.

C. an increase in demand for both brown sugar and white sugar.

D. no change in demand for either type of sugar because weight loss is not a determinant of demand.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

9. 2. 【单选题】An increase in the number of college scholarships issued by private foundations would

A. increase the supply of education.

B. decrease the supply of education.

C. increase the demand for education.

D. decrease the demand for education.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

10. 3. 【单选题】If Juan expects to earn a higher income next month, he may choose to

A. save more now and spend less of his current income on goods and services.

B. save less now and spend more of his current income on goods and services.

C. decrease his current demand for goods and services.

D. move along his current demand curves for goods and services.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

11. 4. 【单选题】 When supply and demand both increase, equilibrium

A. price will increase.

B. price will decrease.

C. quantity may increase, decrease, or remain unchanged.

D. price may increase, decrease, or remain unchanged.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

12. 5. 【单选题】 Suppose that demand for a good increases and, at the same time, supply of the good decreases. What would happen in the market for the good?

A. Equilibrium price would decrease, but the impact on equilibrium quantity would be ambiguous.

B. Equilibrium price would increase, but the impact on equilibrium quantity would be ambiguous.

C. Equilibrium quantity would decrease, but the impact on equilibrium price would be ambiguous.

D. Equilibrium quantity would increase, but the impact on equilibrium price would be ambiguous.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

13. 1. 【单选题】A very hot summer in Atlanta will cause

A. the demand curve for lemonade to shift to the left.

B. the demand for air conditioners to decrease.

C. the demand for jackets to decrease.

D. a movement downward and to the right along the demand curve for tank tops.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

14. 2. 【单选题】If a study by medical researchers found that brown sugar caused weight loss while white sugar caused weight gain, then we likely would see

A. an increase in demand for brown sugar and a decrease in demand for white sugar.

B. a decrease in demand for brown sugar and an increase in demand for white sugar.

C. an increase in demand for both brown sugar and white sugar.

D. no change in demand for either type of sugar because weight loss is not a determinant of demand.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

15. 3. 【单选题】Which of the following events could shift the demand curve for gasoline to the left?

A. The income of gasoline buyers rises, and gasoline is a normal good.

B. The income of gasoline buyers falls, and gasoline is an inferior good.

C. Public service announcements run on television encourage people to walk or ride bicycles instead of driving cars.

D. The price of gasoline rises.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

16. 4. 【单选题】An increase in the number of college scholarships issued by private foundations would

A. increase the supply of education.

B. decrease the supply of education.

C. increase the demand for education.

D. decrease the demand for education.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

17. 5. 【单选题】 You love peanut butter. You hear on the news that 50 percent of the peanut crop in the South has been wiped out by drought, and that this will cause the price of peanuts to double by the end of the year. As a result,

A. your demand for peanut butter will increase, but not until the end of the year.

B. your demand for peanut butter increases today.

C. your demand for peanut butter decreases as you look for a substitute good.

D. your demand for peanut butter shifts left today.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

18. 1. 【单选题】 When consumers face rising gasoline prices, they typically

A. reduce their quantity demanded more in the long run than in the short run.

B. reduce their quantity demanded more in the short run than in the long run.

C. do not reduce their quantity demanded in the short run or the long run.

D. increase their quantity demanded in the short run but reduce their quantity demanded in the long run.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

19. 2. 【单选题】 Which of the following is likely to have the most price inelastic demand?

A. mint-flavored toothpaste

B. toothpaste

C. Colgate mint-flavored toothpaste

D. a generic mint-flavored toothpaste

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

20. 3. 【单选题】 If the price of natural gas rises, when is the price elasticity of demand likely to be the highest?

A. immediately after the price increase

B. one month after the price increase

C. three months after the price increase

D. one year after the price increase

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

21. 4. 【单选题】 Studies indicate that the price elasticity of demand for cigarettes is about 0.4. A government policy aimed at reducing smoking changed the price of a pack of cigarettes from $2 to $6. According to the midpoint method, the government policy should have reduced smoking by

A. 30%.

B. 40%.

C. 80%.

D. 250%.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

22. 5. 【单选题】 If a 15% increase in price for a good results in a 20% decrease in quantity demanded, the price elasticity of demand is

A. 0.75

B. 1.25

C. 1.33

D. 1.60

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

23. 1. 【单选题】To say that a price floor is binding is to say that the price floor

A. results in a shortage.

B. is set below the equilibrium price.

C. causes quantity supplied to exceed quantity demanded.

D. All of the above are correct.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

24. 2. 【单选题】 The imposition of a binding price floor on a market causes quantity demanded to be

A. greater than quantity supplied.

B. less than quantity supplied.

C. equal to quantity supplied.

D. Both (a) and (b) are possible.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

25. 3. 【单选题】If a price floor is a binding constraint on a market, then

A. the equilibrium price must be above the price floor.

B. the quantity demanded must exceed the quantity supplied.

C. sellers cannot sell all they want to sell at the price floor.

D. buyers cannot buy all they want to buy at the price floor.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

26. 4. 【单选题】When a binding price floor is imposed on a market to benefit sellers,

A. every seller in the market benefits.

B. every buyer in the market benefits, too.

C. every seller who wants to sell the good will be able to do so, but only if they appeal to the personal biases of the buyers.

D. some sellers will not be able to sell any amount of the good.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

27. 5. 【单选题】An example of a price floor is

A. the regulation of gasoline prices in theU.S.in the 1970s.

B. rent control.

C. the minimum wage.

D. any restriction on price that leads to a shortage.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

28. 1. 【单选题】If you had been willing to pay $2.19for the gallon of milk purchased at the supermarket but were required to pay only $1.89, you have gained

A. a refund of $.30 from the clerk

B. a consumer surplus amounting to$.30.

C. excess marginal benefit of $2.19.

D. producer surplus of $.30.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

29. 2. 【单选题】 If it costs $30 to produce the first unit of a good and $28, $27, $25 $23,$24, and $25 to produce the next six units, respectively, then the minimum of the average cost curve could occur at:

A. 1 unit.

B. 2 units

C. 3 Units.

D. none of the above

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

30. 3. 【单选题】If average variable cost is less than marginal cost, then:

A. average total cost is rising.

B. average total cost is constant.

C. average total cost is falling.

D. average variable cost is rising.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

31. 4. 【单选题】An economically effcient situationis one in which

A. everyone has everything they need.

B. everyone has above-average income.

C. total surplus is maximized.

D. all producers are operating at the lowest possible marginal cost.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

32. 5. 【单选题】One way of measuring the economic inefficiency in a specific situation is to calculate the

A. difference between the price of the good in the inefficient situation and the price if the situation was efficient.

B. change in revenue reported by firms.

C. loss in consumer and producer surplus relative to an efficient solution.

D. change in economic profits relativeto an efficient solution.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

33. 1. 【单选题】 Which of the following is likely to have the most price inelastic demand?

A. mint-flavored toothpaste

B. toothpaste

C. Colgate mint-flavored toothpaste

D. a generic mint-flavored toothpaste

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

34. 2. 【单选题】 When consumers face rising gasoline prices, they typically

A. reduce their quantity demanded more in the long run than in the short run.

B. reduce their quantity demanded more in the short run than in the long run.

C. do not reduce their quantity demanded in the short run or the long run.

D. increase their quantity demanded in the short run but reduce their quantity demanded in the long run.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

35. 3. 【单选题】 A 10 percent increase in gasoline prices reduces gasoline consumption by about

A. 6 percent after one year and 2.5 percent after five years.

B. 2.5 percent after one year and 6 percent after five years.

C. 10 percent after one year and 20 percent after five years.

D. 0 percent after one year and 1 percent after five years.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

36. 4. 【单选题】 If corn farmers know that the demand for corn is inelastic, and they want to increase their total revenue, they should all

A. plant more corn so that they would be able to sell more each year.

B. increase spending on fertilizer in an attempt to produce more corn on the acres they farm.

C. reduce the number of acres they plant in corn.

D. contribute to a fund that promotes technological advances in corn production.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

37. 5. 【单选题】 If a 15% increase in price for a good results in a 20% decrease in quantity demanded, the price elasticity of demand is

A. 0.75

B. 1.25

C. 1.33

D. 1.60

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

38. 1. 【单选题】If a perfectly competitive industry faces a price above its long-run competitive average cost minimum, then

A. firms will raise their cost curves till equilibrium is reached.

B. the price will fall automatically as consumers bargain for discount.

C. new firms will enter the industry.

D. the existing frms will monopolize the industry.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

39. 2. 【单选题】Which of the follwing characterizes a supplier ofa go perfectly competitive market?

A. It can influence the price of its product.

B. In the short run, it produces apositive amount onlyif price is greater than average total cost.

C. it chooses output such that marginal cost equals price.

D. In the long run, it will shut down if price exceeds average variable cost.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

40. 3. 【单选题】If a perfectly competitive industry is in long-run equilibrium, all firms

A. have equal marginal costs.

B. have identical supply curves.

C. operate at the point where marginal cost is greater than average total costs.

D. have identical plant sizes.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

41. 4. 【单选题】Under conditions of decreasing cost:

A. Under conditions of decreasing cost: externalities are irrelevant and in applicable.

B. a few large ellers may come to dominate the industry.

C. astrong case can be made for supplanting complete individualism by some kind of group action.

D. each of firms in the industry will continue to produce more outputat falling costs per unit.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

42. 5. 【单选题】To maximize profits or minimize losses, a firm must make sure it is producing at an output where

A. marginal revenue is falling faster than marginal cost.

B. average costs are rising.

C. price is equal to marginal cost.

D. marginal cost is falling.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

43. 1. 【单选题】An externality exists whenever

A. the economy cannot benefit from government intervention.

B. markets are not able to reach equilibrium.

C. a firm sells its product in a foreign market.

D. a person engages in an activity that influences the well-being of a bystander and yet neither pays nor receives payment for that effect.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

44. 2. 【单选题】When externalities are present in a market, the well-being of market participants

A. and market bystanders are both directly affected.

B. and market bystanders are both indirectly affected.

C. is directly affected, and market bystanders are indirectly affected.

D. is indirectly affected, and market bystanders are directly affected.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

45. 3. 【单选题】Dog owners do not bear the full cost of the noise their barking dogs create and often take too few precautions to prevent their dogs from barking. Local governments address this problem by

A. making it illegal to "disturb the peace".

B. having a well-funded animal control department.

C. subsidizing local animal shelters.

D. encouraging people to adopt cats.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

46. 4. 【单选题】Which of the following statements about a well-maintained yard best conveys the general nature of the externality?

A. A well-maintained yard conveys a positive externality because it increases the home's market value.

B. A well-maintained yard conveys a negative externality because it increases the property tax liability of the owner.

C. A well-maintained yard conveys a positive externality because it increases the value of adjacent properties in the neighborhood.

D. A well-maintained yard cannot provide any type of externality.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

47. 5. 【单选题】Since restored historic buildings convey a positive externality, local governments may choose to

A. regulate the demolition of them.

B. provide tax breaks to owners who restore them.

C. increase property taxes in historic areas.

D. Both a and b are correct.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

48. 1. 【单选题】 The old lyric “the best things in life are free”

A. is not true for any goods.

B. is even true for some goods that have a price.

C. refers to goods provided by nature or the government.

D. refers to goods provided by the market.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

49. 2. 【单选题】 When a good is excludable,

A. one person's use of the good diminishes another person's ability to use it.

B. people can be prevented from using the good.

C. no more than one person can use the good at the same time.

D. everyone will be excluded from using the good.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

50. 1. 【多选题】Which of the following are necessary characteristics of a monopoly?

A. The firm is the sole seller of its product.

B. The firm's product does not have close substitutes.

C. The firm generates a large economic profit.

D. The firm is located in a small geographic market.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

51. 2. 【多选题】Which of the following statements is true about patents and copyrights?

A. They have benefits and costs.

B. They lead to higher prices.

C. They enhance the ability of monopolists to earn above-average profits.

D. They lead to lower prices.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

52. 3. 【单选题】A benefit of a monopoly is

A. lower prices.

B. a wide variety of similar products.

C. decreasing long-run average total costs.

D. greater creativity by authors who can copyright their novels.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

53. 4. 【单选题】The fundamental source of monopoly power is

A. barriers to entry.

B. profit.

C. decreasing average total cost.

D. a product without close substitutes.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

54. 5. 【单选题】Because a monopolist must lower its price in order to sell another unit of output,

A. marginal revenue is less than price.

B. long-term economic profits will be zero.

C. total revenue increases as price increases.

D. average revenue is less than price.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

55. 1. 【单选题】The market structure of many businesses that sell similar but different items is

A. Perfect competition

B. Monopoly

C. Oligopoly.

D. Monopolistic competition.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

56. 2. 【单选题】When an oligarch chooses the level of production that maximizes its profit, it produces

A. Greater than the level of monopoly production and less than the level of production in a competitive market

B. Below the level of monopoly production. And greater than the level of production in competitive markets

C. Greater than the level of production in a monopoly or competitive market

D. Below the level of production in a monopoly or competitive market

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

57. 3. 【单选题】Prisonsers' dilemma is a particular "game" between two captured prisoners that illustrates why cooperation is difficult to maintain even when it is mutually beneficial.

A. right.

B. wrong.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

58. 4. 【单选题】If the output effect is larger than the price effect,the well owner will decrease production.

A. right.

B. wrong.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

59. 1. 【多选题】Which of the following is true of workers with a marginal product . These workers

A. They usually pay well.

B. Work is usually carried out with little capital.

C. With skills that are in relatively short supply.

D. There is a great demand for the produced grain.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

60. 2. 【多选题】What causes the labor-demand curve to shift?

A. the output price.

B. technological change.

C. the supply of other factor.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

61. 3. 【单选题】The most important factor of production is

A. Money, stocks and bonds.

B. Water, Earth and knowledge.

C. Management, finance and marketing.

D. Labour, land and capital.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

62. 4. 【单选题】An increase in the supply of Labor will

A. Increase the value of the marginal product of labor and raise wages.

B. Reduce the value of the marginal product of labor. And lower wages.

C. Increase the value of the marginal product of labor and lower wages.

D. Reduce the value of the marginal product of labor and raise wages.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

63. 5. 【单选题】Marginal product of labor is the increase in the amount of output from an additional unit of labor.

A. right.

B. wrong.

答案：请关注【九八五题库】微信公众号，发送题目获取正确答案。

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