范兆斌微经网上作业答案.doc

此文档收集于网络，如有侵权，请联系网站删除Chapter 1问题 11 5 分 保存 The key assumption underlying the theory of the firm is that: A.firms are assumed to maximize sales revenue. B.managers are assumed to maximize the number of employees in their department. C.firms are assumed to maximize profits. D.none of the above 问题 13 5 分 保存 The trade-offs facing consumers include: A.how to allocate income across goods and serves.B.how to allocate income between consumption and savings.C.both A and BD.none of the above 问题 16 5 分 保存 The price of a taco was $0.29 in 1970 and $0.99 in 1993. The CPI was 38.8 in 1970 and 144.0 in 1993. The 1993 price of a taco in 1970 dollars is: A.$0.08. B.$0.27. C.$0.34. D.$3.67. 问题 17 5 分 保存 Which of the following markets has the most restrictive geographic boundary? 地理界线A.The market for retail gasoline B.The market for housingC.The market for gold D.The market for beef 问题 18 5 分 保存 Why is market definition important for economic decision making? A.A firm is interested in knowing its actual and potential competitors.B.A firm will define its market in order to maximize revenue.C.Government regulators are interested in knowing the effect of mergers and acquisitions on competition and prices in a particular market.D.both A and CE.both A nd B 问题 19 5 分 保存 What does it mean when the CPI is higher this year than last? A.The rate of inflation has increased.B.There has been inflation since last year.C.Real prices have increased.D.Real prices have decreased. Chapter 2问题 4 5 分 保存 Coffee and cream:A.are both luxury goods.B.are complements.C.are both more inelastic in demand in the long run than in the short run.D.have a positive cross price elasticity of demand. 问题 10 5 分 保存 Which of the following will NOT cause a shift in the supply of gasoline?A.An increase in the wage rate of refinery workersB.A decrease in the price of gasolineC.An improvement in oil refining D.technologyA decrease in the price of crude oil 问题 13 5 分 保存 Which of the following will cause the demand curve for Beatles compact discs to shift to the right?A.An increase in the price of the discsB.A decrease in consumers incomesC.An increase in the price of Phil Collins latest compact disc (a substitute)D.all of the aboveE.none of the above 问题 14 5 分 保存 Which of the following will NOT cause a rightward shift in the demand curve for beer?A.A change in the price of beerB.A health study indicating positive health benefits of moderate beer consumptionC.An increase in the price of French wine (a substitute)D.A decrease in the price of potato chips (a complement)E.none of the above Chapter 3问题 1 5 分 保存 Gary Franklin is a movie critic. He invented the Franklin Scale with which he rates movies from 1 to 10 (10 being best). When asked about his scale, Mr. Franklin explained that it is a subjective measure of movie quality. A movie with a ranking of 10 is not necessarily 10 times better than a movie with a ranking of 1, but it is better. A movie with a ranking of 5 is better than a movie with a ranking of 1, but is not as good a movie with a ranking of 10. Thats all it really tells you. Based on Mr. Franklins description, his scale is: A) ordinal but not cardinal. B) cardinal but not ordinal.C) an objective standard to judge movies. D) neither cardinal nor ordinal. 问题 7 5 分 保存 If a market basket is changed by adding more of at least one good, then rational consumers will:A) rank the market basket more highly after the change.B) more likely prefer a different market basket.C) rank the market basket as being just as desirable as before.D) be unable to decide whether the first market basket is preferred to the second or vice versa.E) have indifference curves that cross. 问题 11 5 分 保存 Zoe is an executive at Dell Computer Company who is in charge of designing the next version of laptop computers. She will consider such features as screen size, weight, processor speed, and CD and DVD drives. Given the fact that it is costly to include more features in new products, why might Zoe be interested in data on how much consumers paid for a range of laptops with different attributes?A) in order to estimate willingness to pay for each feature.B) in order to set an optimal price for the laptops.C) in order to determine the best features to include.D) in order to estimate willingness to trade off one feature for another.E) all of the above 问题 12 5 分 保存 In what ways can economists help auto manufacturers estimate the marginal rate of substitution between features such as vehicle interior size and acceleration?A) Examining production cost dataB) Conducting consumer surveys about willingness to pay for auto featuresC) Solving the standard consumer modelD) Statistically analyzing historical data on purchases of different types of autosE) B and D only 问题 14 5 分 保存 Suppose that a market basket of two goods is changed by adding more of one of the goods and subtracting one unit of the other. The consumer will:A) rank the market basket more highly after the change.B) rank the market basket more highly before the change.C) rank the market basket just as desirable as before.D) any one of the above statements may be true. 问题 16 5 分 保存 Which of the following is true about the indifference curve where one commodity (such as pollution) is bad? A) It has a negative slope. . B) It has a positive slope.C) It is horizontal. D) It is vertical 问题 18 5 分 保存 Envision a graph with meat on the horizontal axis and vegetables on the vertical axis. A strict vegetarian would have indifference curves that are: A) vertical lines.B) horizontal lines.C) diagonal straight lines.D) right angles. E) upward sloping. 问题 20 5 分 保存 Jane is trying to decide which courses to take next semester. She has narrowed down her choice to two courses, Econ 1 and Econ 2. Now she is having trouble and cannot decide which of the two courses to take. Its not that she is indifferent between the two courses, she just cannot decide. An economist would say that this is an example of preferences that: A) are not transitive.B) are incomplete.C) violate the assumption that more is preferred to less.D) all of the above Chapter 4问题 2 5 分 保存 The change in the price of one good has no effect on the quantity demanded of another good. These goods are:A) complements.B) substitutes.C) both inferior.D) both Giffen goods.E) none of the above 问题 4 5 分 保存 An individual demand curve can be derived from the _ curve.A) price-consumptionB) price-incomeC) income-substitutionD) income-consumptionE) Engel 问题 5 5 分 保存 Which of the following claims is true at each point along a price-consumption curve?A) Utility is maximized but income is not all spent.B) All income is spent, but utility is not maximized.C) Utility is maximized, and all income is spent.D) The level of utility is constant. 问题 6 5 分 保存 Which of the following is true regarding income along a price-consumption curve?A) Income is increasing.B) Income is decreasing.C) Income is constant.D) The level of income depends on the level of utility. 问题 7 5 分 保存 Which of the following is true regarding utility along a price-consumption curve?A) It is constant. B) It changes from point to point.C) It changes only if income changes. D) It changes only for normal goods. 问题 8 5 分 保存 The income-consumption curveA) illustrates the combinations of incomes needed with various levels of consumption of a good.B) is another name for income-demand curve.C) illustrates the utility-maximizing combinations of goods associated with every income level.D) shows the utility-maximizing quantity of some good (on the horizontal axis) as a function of income (on the vertical axis). 问题 10 5 分 保存 Which of the following goods has a low, but positive, income elasticity of demand?A) furniture.B) new cars.C) health insurance.D) all of the aboveE) none of the above 问题 11 5 分 保存 If an Engel curve has a positive slopeA) both goods are normal.B) the good on the horizontal axis is normalC) as the price of the good on the horizontal axis increases, more of both goods in consumed.D) as the price of the good on the vertical axis increases, more of the good on the horizontal axis is consumed. 问题 13 5 分 保存 When the income-consumption curve has a positive slope throughout its entire length, we can conclude thatA) both goods are inferior.B) both goods are normal.C) the good on the vertical (y) axis is inferior.D) the good on the horizontal (x) axis is inferior 问题 14 5 分 保存 Consider two goods X and Y available for consumption. Assume that the price of X changes while the price of Y remains fixed. For these two goods, the price-consumption curve illustrates the A) relationship between the price of X and consumption of Y.B) utility-maximizing combinations of X and Y for each price of X.C) relationship between the price of Y and the consumption of X.D) utility-maximizing combinations of X and Y for each quantity of X. 问题 15 5 分 保存 Consider a graph on which one good Y is on the vertical axis and the only other good X is on the horizontal axis. On this graph the income-consumption curve has a positive slope for low incomes, then it takes a zero slope for a higher income, and then it takes a negative slope for even higher incomes (the curve looks like an arc, first rising and then falling as income increases). This curve illustrates that, for all income levels, A) both X and Y are normal. B) only Y is normal.C) both X and Y are inferior. D) only X is normal. 问题 16 5 分 保存 According to a survey by the U.S. Bureau of Labor Statistics, which of the following statements about annual U.S. household consumer expenditures is false? A) The income elasticity of demand for entertainment is positive.B) The income elasticity of demand for owner-occupied housing is positive.C) The income elasticity of demand for rental housing is positive.D) The income elasticity of demand for health care is positive.E) Average family expenditures increase with income. 问题 18 5 分 保存 Jons income-consumption curve is a straight line from the origin with a positive slope. Now suppose that Jons preferences change such that his income-consumption curve remains a straight line but rotates 15 degrees clockwise. Jons demand curve for the good on thehorizontal axis A) will shift left. B) will shift right.C) will not change. D) might do any of the above. 问题 19 5 分 保存 Suppose that a consumer regards two types of soap as perfect substitutes for one another. The price consumption path generated by changing the price of one type of soapA) is always upward sloping.B) is always horizontal.C) is always vertical.D) corresponds with the axis for the cheaper soap.E) corresponds with the axis for the more expensive soap. 问题 20 5 分 保存 Your income response for bicycle riding changes with the amount of income you earn. At low levels of income, you view bicycle riding as an inferior good and substitute other types of transportation (e.g., auto travel) as your income rises. However, you view bicycle riding as a normal good after your income rises above a particular level. What shape does your Engel curve for bicycle riding have? A) Vertical lineB) Horizontal lineC) C-shapedD) Upward slopingE) none of the above Chapter 6问题 1 5 分 保存 A production function defines the output that can be producedA) at the lowest cost, given the inputs available.B) for the average firm.C) if the firm is technically efficient.D) in a given time period if no additional inputs are hired.E) as technology changes over time. 问题 2 5 分 保存 A production function assumes a givenA) technology.B) set of input prices.C) ratio of input prices.D) amount of capital and labor.E) amount of output. 问题 10 5 分 保存 The law of diminishing returns refers to diminishingA) total returns. B) marginal returns.C) average returns. D) all of these. 问题 13 5 分 保存 When the average product is decreasing, marginal productA) equals average product.B) is increasing.C) exceeds average product.D) is decreasing.E) is less than average product. 问题 15 5 分 保存 Which of the following ideas were central to the conclusions drawn by Thomas Malthus in his 1798 Essay on the Principle of Population?A) Short-run time periodB) Shortage of laborC) Law of diminishing resource availabilityD)Law of diminishing returns 问题 16 5 分 保存 The law of diminishing returns assumes thatA) there is at least one fixed input.B) all inputs are changed by the same percentage.C) additional inputs are added in smaller and smaller increments.D) all inputs are held constant. 问题 17 5 分 保存 According to the law of diminishing returnsA) the total product of an input will eventually be negative.B) the total product of an input will eventually decline.C) the marginal product of an input will eventually be negative.D) the marginal product of an input will eventually decline.E) none of the above 问题 18 5 分 保存 In a certain textile firm, labor is the only short term variable input. The manager notices that the marginal product of labor is the same for each unit of labor, which implies thatA) the average product of labor is always greater that the marginal product of laborB) the average product of labor is always equal to the marginal product of laborC) the average product of labor is always less than the marginal product of laborD) as more labor is used, the average product of labor fallsE) there is no unambiguous relationship between labors marginal and average products. 问题 19 5 分 保存 At a given level of labor employment, knowing the difference between the average product of labor and the marginal product of labor tells youA) whether increasing labor use raises output.B) whether increasing labor use changes the marginal product of labor.C) whether economies of scale exist.D) whether the law of diminishing returns applies.E) how increasing labor use alters the average product of labor.问题 20 5 分 保存 If the law of diminishing returns applies to labor thenA) the marginal product of labor must eventually become negative.B) the average product of labor must eventually become negative.C) the marginal product of labor must rise and then fall as employment rises.D) the average product of labor must rise and then fall as employment increases.E) after some level of employment, the marginal product of labor must fall. Chapter 7问题 5 5 分 保存 Constantine purchased 100 shares of IBM stock several years ago for $150 per share. The price of these shares has fallen to $55 per share. Constantines investment strategy is buy low, sellhigh. Therefore, he will not sell his IBM stock until the price rises above $150 per share. If he sells at a price lower than $150 per share he will have bought high and sold low.Constantines decision:A) is correct and shows a solid command of the nature of opportunity cost.B) is incorrect because the original price paid for the shares is a sunk cost and should have no bearing on whether the shares should be held or sold.C) is incorrect because when the price of a stock falls, the law of demand states that he should buy more shares.D) is incorrect because it treats the price of the shares as an explicit cost. 问题 6 5 分 保存