第一章 单元测试
1、单选题：What Microeconomics is about?( )
A:Study of Business Environment
B:Study of financial position of the economy
C:Study of the Economy at Micro Level
正确答案:【Study of the Economy at Micro Level】
2、单选题：Economics proceeds by making models of ( ), which are simplified representations of reality.
A:social phenomena
B:people’s imagination
C:stories
正确答案:【social phenomena】
3、单选题：The demand curve shows ( )
A:how much people would like to pay at the reserve prices.
B:how much firms would like to sell at each prices.
C:how much market would like to trade.
正确答案:【how much people would like to pay at the reserve prices.】
4、判断题：The conflict between the scarce economic wants of society and its limited resources gives rise to the economizing problem.
A:对
B:错
正确答案:【对】
5、判断题：The only requirement for a market to be perfectly competitive is for the market to have many buyers and sellers.
A:对
B:错
正确答案:【对】
第二章 单元测试
1、判断题：If there are two goods with positive prices and the price of one good is reduced, while income and other prices remain constant, then the size of the budget set is reduced.
A:对
B:错
正确答案:【错】
2、判断题：If preferences are transitive, more is always preferred to less.
A:对
B:错
正确答案:【错】
3、判断题：With quasi-linear preferences, the slope of indifference curves is constant along all rays through the origin.
A:对
B:错
正确答案:【错】
4、单选题：Hans has 27 dollars, which he decides to spend on x and y. Commodity x costs $16 per unit and commodity y costs $10 per unit. He has the utility function U (x, y)=5×2 + 2y2 and he can purchase fractional units of x and y.
A: Hans will choose only x.
B: Hans will choose only y.
C: Hans will chose some of each commodity, but more y than x.
D: Hans will choose some of each commodity, but more x than y.
正确答案:【 Hans will choose only y.】
5、单选题：Wanda Littlemore’s utility function is U (x, y) = x + 63y2.Her income is 184. If the priceof x is 1 and the price of y is 33, how many units of good x will Wanda demand?
A:17
B:22
C:24
D:19
正确答案:【19】
第三章 单元测试
1、判断题：If preferences are quasilinear, then for very high incomes the income offer curve is a straight line parallel to one of the axes.
A:对
B:错
正确答案:【对】
2、判断题：If two goods are substitutes, then an increase in the price of one of them will increase the demand for the other.
A:对
B:错
正确答案:【对】
3、判断题：An Engel curve is a demand curve with the vertical and horizontal axes reversed.
A:对
B:错
正确答案:【错】
4、单选题：Daisy received a tape recorder as a birthday gift and is not able to return it. Her utility function is U(x,y,z)=x+z1/2f(y)where z is the number of tapes she buys, y is the number of tape recorders she has and x is the amount of money she has left to spend. f(y)=0if y<1and f(y)=8 if y is 1 or greater. The price of tapes is 2 and she can easily afford to buy dozens of tapes. How many tapes will she buy?
A:
4
B:
6
C:
2
D:
8
正确答案:【
4
】
5、单选题：Mike consumes two commodities, x and y; and his utility function is min{x +2y,y+2x}. He chooses to buy 8 units of good x and 16 units of good y. The price of good y is 0.50. What is his income?
A:32
B:40
C:24
D:16
正确答案:【16】
6、判断题：Quasilinear preferences are homothetic when the optimal amount of one of the goods is not affordable.
A:对
B:错
正确答案:【错】
7、单选题：Walt consumes strawberries and cream but only in the fixed ratio of three boxes of strawber ries to two cartons of cream. At any other ratio, the excess goods are totally useless to him. The cost of a box of strawberries is 10 and the cost of a carton of cream is 10. Walt’s income is 200.Which of the following is true?
A:Walt demands 10 cartons of cream.
B:Walt demands 10 boxes of strawberries.
C:Walt considers strawberries and cartons of cream to be perfect substitutes.
D:Walt demands 12 boxes of strawberries.
正确答案:【Walt demands 12 boxes of strawberries.】
8、单选题：Madonna buys only two goods. Her utility function is Cobb-Douglas. Her demand functions have which of the following properties?
A:Her demand for one of the two goods does not depend on income.
B:Her demand for neither good depends on income.
C:Her demand for each of the goods depends on income and on the prices of both goods.
D:Her demand for each of the two goods depends only on her income and on the price of that good itself.
正确答案:【Her demand for each of the two goods depends only on her income and on the price of that good itself.】
9、单选题：Daisy received a tape recorder as a birthday gift and is not able to return it. Her utility function is U(x,y,z)=x+z1/2f(y)where z is the number of tapes she buys, y is the number of tape recorders she has and x is the amount of money she has left to spend. f(y)=0if y<1and f(y)=8 if y is 1 or greater. The price of tapes is 2 and she can easily afford to buy dozens of tapes. How many tapes will she buy?
A:4
B:6
C:2
D:8
正确答案:【4】
10、单选题：Mike consumes two commodities, x and y; and his utility function is min{x +2y,y+2x}. He chooses to buy 8 units of good x and 16 units of good y. The price of good y is 0.50. What is his income?
A:32
B:40
C:24
D:16
正确答案:【16】
第四章 单元测试
1、判断题：The strong axiom of revealed preference requires that if a consumer chooses x when he can afford y; and chooses y when he can afford z; then he will not choose z when he can afford x.
A:对
B:错
正确答案:【对】
2、判断题：If a consumer maximizes a utility function subject to a budget constraint and has strictly convex preferences, then his behavior will necessarily satisfy the weak axiom of revealed preference and the strong axiom of revealed preference.
A:对
B:错
正确答案:【对】
3、判断题：The Laspeyres price index differs from the Paasche price index because the Laspeyres index holds prices constant and varies quantities while the Paasche price index holds quantities constant and varies prices.
A:对
B:错
正确答案:【错】
4、单选题：Let A stand for the bundle (7,9);B stand for the bundle (10,5); and C stand for the bundle (6,6). When prices are (2,4); Betty chooses C. When prices are (12,3) she chooses A. Which of the following is true?
A:A is directly revealed preferred to B.
B: A is indirectly revealed preferred to B.
C:C is directly revealed preferred to A.
D:None of the above
正确答案:【None of the above】
5、单选题：Remember that the Laspeyres price index uses the old quantities for the weights. In 1971, good x cost 3 and good y cost 1. The current price of good x is 3 and the current price of good y is 5. In 1971 the consumption bundle was (x,y) = (3,5). The current consumption bundle is (x,y) = (9 ,4). The Laspeyres index of current prices relative to 1971 prices is closest to which of the following numbers?
A: 3.36
B: 2.43
C:0.30
D: 1.52
正确答案:【 2.43 】
6、判断题：It follows from the weak axiom of revealed preference that if a consumer chooses x when he could afford y and chooses y when he could afford x; then his income must have changed between the two observations.
A:对
B:错
正确答案:【错】
7、单选题：Let A stand for the bundle (7,9);B stand for the bundle (10,5); and C stand for the bundle (6,6). When prices are (2,4); Betty chooses C. When prices are (12,3) she chooses A. Which of the following is true?
A:A is directly revealed preferred to B.
B:A is indirectly revealed preferred to B.
C:C is directly revealed preferred to A.
D:None of the above
正确答案:【None of the above】
8、单选题：Remember that the Laspeyres price index uses the old quantities for the weights. In 1971, good x cost 3 and good y cost 1. The current price of good x is 3 and the current price of good y is 5. In 1971 the consumption bundle was (x,y) = (3,5). The current consumption bundle is (x,y) = (9 ,4). The Laspeyres index of current prices relative to 1971 prices is closest to which of the following numbers?
A:3.36
B:2.43
C:0.30
D:1.52
正确答案:【2.43】
9、单选题：At prices (4,12); Harry chooses the bundle (9,4). At the prices (8,4); Harry chooses the bundle (2,9). Is this behavior consistent with the weak axiom of revealed preference?
A:Yes
B:No
C:It depends on his income.
D:We would have to observe a third choice to be able to say.
正确答案:【Yes】
10、单选题：A student spends all of her income on pizza and books. When pizzas cost $3 each and books cost $10 each, she consumed 30 pizzas and 3 books per month. The price of pizzas fell to $2.90 each while the price of books rose to $11 each. The price change:
A:made her worse off
B:left her exactly as well off as before.
C:left her at least as well off as before and possibly helped her.
D:had the same effect as a $3 increase in her income.
正确答案:【left her at least as well off as before and possibly helped her.】
第五章 单元测试
1、判断题：A Giffen good must be an inferior good.
A:对
B:错
正确答案:【对】
2、判断题：The compensated demand function refers to the demand function of someone who is adequately paid for what he for she sells.
A:对
B:错
正确答案:【错】
3、判断题：In the case of homothetic preferences the entire change in demand from a price change is due to the substitution effect.
A:对
B:错
正确答案:【错】
4、单选题：Walt considers x and y to be perfect substitutes. They originally cost 10 and 9 respectively. His income is 720. One day the price of x drops to 8. Which of the following is true?
A:The income effect increases the quantity of y by 90．
B:The substitution effect increases the quantity of y by 80.
C:The substitution effect increases the quantity of x by 90
D:The income effect increases the quantity of x by 80.
正确答案:【The substitution effect increases the quantity of x by 90】
5、单选题：Suppose that bananas are a normal good and Woody is currently consuming 100 bananas at a price of 10 cents each.
A:His Slutsky compensated demand curve going through this point is steeper than his ordinary demand curve.
B:His ordinary demand curve going through this point is steeper than his Slutsky compensated demand curve.
C:His ordinary demand curve is steeper to the left and his Slutsky compensated demand curve is steeper to the right of this point.
D:Whether his ordinary demand curve or his compensated demand curve is steeper, depends on whether his price elasticity is greater than 1.
正确答案:【His Slutsky compensated demand curve going through this point is steeper than his ordinary demand curve.】
6、判断题：John purchases two goods, x and y. Good x is an inferior good for some range of income.There must be another range of income for which good x is a normal good.
A:对
B:错
正确答案:【对】
7、单选题：The following can be said about the income and substitution effects of a price increase on the demand for the good whose price rose:
A:The former is always positive and the latter is always negative.
B:Both can be either positive or negative.
C:While the latter is always negative, the former can be either positive or negative.
D:While the former is always negative, the latter can be either positive or negative.
正确答案:【While the latter is always negative, the former can be either positive or negative.】
8、单选题：When the price of x rises, Marvin responds by changing his demand for x. The substitution effect is the part of this change that represents his change in demand:
A:holding the prices of substitutes constant.
B:if he is allowed to substitute as much x for y as he wishes.
C:if his money income is held constant when the price of x changes.
D:none of the above.
正确答案:【none of the above.】
9、单选题：Walt considers x and y to be perfect substitutes. They originally cost 10 and 9 respectively. His income is 720. One day the price of x drops to 8. Which of the following is true?
A:The income effect increases the quantity of y by 90．
B:The substitution effect increases the quantity of y by 80.
C:The substitution effect increases the quantity of x by 90.
D:The income effect increases the quantity of x by 80.
正确答案:【The substitution effect increases the quantity of x by 90.】
10、单选题：Suppose that bananas are a normal good and Woody is currently consuming 100 bananas at a price of 10 cents each.
A:
His Slutsky compensated demand curve going through this point is steeper than his ordinary demand curve.
B:
His ordinary demand curve going through this point is steeper than his Slutsky compensated demand curve.
C:
His ordinary demand curve is steeper to the left and his Slutsky compensated demand curve is steeper to the right of this point.
D:
Whether his ordinary demand curve or his compensated demand curve is steeper, depends on whether his price elasticity is greater than 1.
正确答案:【
His Slutsky compensated demand curve going through this point is steeper than his ordinary demand curve.
】
第六章 单元测试
1、判断题：
If a rational utility maximizer is a net demander of a good, and if an increase in its price
causes him to buy more of it, then it must be an inferior good.
A:对
B:错
正确答案:【对】
2、判断题：
If a consumer is a buyer of some goods and a seller of others, then a change in prices will generate an extra income effect in the Slutsky equation due to the revaluation of the consumer’s endowment.
A:对
B:错
正确答案:【对】
3、判断题：If a utility maximizer is a net seller of something and the price of that good rises while other prices stay constant, her situation might improve so much that she becomes a net buyer
A:对
B:错
正确答案:【错】
4、单选题：
Marsha Mellow is very flexible. She consumes x and y. She says `Give me x or give me y; I don’t care. I can’t tell the difference between them.’ She is currently endowed with 14 units of x and 6 units of y. The price of x is 4 times the price of y. Marsha can trade x and y at the going prices, but has no other source of income. How many units of y will Marsha consume?
A:66
B: 20
C:62
D:6
正确答案:【62】
5、单选题：
Yoram insists on consuming 3 times as much y as he consumes of x (so he always has y = 3x). He will consume these goods in no other ratio. The price of x is 2 times the price of y. Yoram has an endowment of 24 x0s and 42 y0s which he can trade at the going prices. He has no other source of income. What is Yoram’s gross demand for x?
A:90
B:66
C:18
D:16
正确答案:【18】
6、判断题：If leisure is a normal good, then an increase in non-labor income will reduce labor supply.
A:对
B:错
正确答案:【对】
7、单选题：Mr. Cog has 18 hours per day to divide between labor and leisure. His utility function is U (C,R) = CR; where C is dollars per year spent on consumption and R is hours of leisure. If he has a nonlabor income of 40 dollars per day and a wage rate of 8 dollars per hour, he will choose a combination of labor and leisure that allows him to spend:
A:184 dollars per day on consumption.
B:82 dollars per day on consumption.
C:112 dollars per day on consumption.
D:92 dollars per day on consumption.
正确答案:【92 dollars per day on consumption.】
8、单选题：If Abishag owns 12 quinces and 10 kumquats, and if the price of kumquats is 3 times the price of quinces, how many kumquats can she afford if she buys as many kumquats as she can?
A:28
B:22
C:10
D:14
正确答案:【14】
9、单选题：If Abishag owns 16 quinces and 15 kumquats, and if the price of kumquats is 4 times the price of quinces, how many kumquats can she afford if she buys as many kumquats as she can?
A:38
B:31
C:15
D:19
正确答案:【19】
10、单选题：Yoram insists on consuming 3 times as much y as he consumes of x (so he always has y = 3x). He will consume these goods in no other ratio. The price of x is 2 times the price of y. Yoram has an endowment of 24 x’s and 42 y’s which he can trade at the going prices. He has no other source of income. What is Yoram’s gross demand for x?
A:90
B:66
C:18
D:16
正确答案:【18】
第七章 单元测试
1、判断题：Consumer’s surplus is another name for excess demand.
A:对
B:错
正确答案:【错】
2、判断题：The equivalent variation in income from a tax is the amount of extra income that a consumer would need in order to be as well off after the tax is imposed as he was originally.
A:对
B:错
正确答案:【错】
3、判断题：With quasilinear preferences, the equivalent variation and the compensating variation in income due to a tax are the same.
A:对
B:错
正确答案:【对】
4、单选题：Ella’s utility function is min{4x,y}. If the price of x is 15 and the price of y is 20, howmuch money would she need to be able to purchase a bundle that she likes as well as the bundle(x,y) = (5,8)?
A:92
B:198
C:190
D:235
正确答案:【190】
5、单选题：Sam’s utility function is U (x,y)=2x + y where x is the number of x’s he consumes per week and y is the number of y’s he consumes per week. Sam has $200 a week to spend. The price of x is 4. Sam currently doesn’t consume any y. Sam has received an invitation to join a club devoted to consumption of y. If he joins the club, Sam can get a discount on the purchase of y. If he belonged to the club he could buy y for $1 a unit. How much is the most Sam would be willing to pay to join this club?
A: nothing
B:$100 a week
C:$50 a week
D: $40 a week
正确答案:【$100 a week】
6、单选题：Sir Plus has a demand function for mead that is given by the equation D(p) = 100-P.If the price of mead is 75, how much is Sir Plus’s net consumer surplus?
A:25
B:312.5
C:625
D:156.25
正确答案:【312.5】
7、单选题：Sam has quasilinear preferences and his demand function for x is D(p) = 15-p/3.The price of x is initially $15 per unit and increases to $24 per unit. Sam’s change is consumer surplus is the closest to:
A:-168
B:-76
C:-27
D:75
正确答案:【-76】
8、单选题：At the initial prices, Teodoro is a net seller of apples and a net buyer of bananas. If the price of apples decreases and the price of bananas does not change:
A:the compensating variation must be negative and the equivalent variation positive.
B:the compensating variation must be positive and the equivalent variation negative.
C:both the compensating variation and the equivalent variation must be positive.
D:both the compensating variation and the equivalent variation must be negative.
正确答案:【both the compensating variation and the equivalent variation must be positive.】
9、单选题：Ella’s utility function is min{4x,y}. If the price of x is 15 and the price of y is 20, howmuch money would she need to be able to purchase a bundle that she likes as well as the bundle(x,y) = (5,8)?
A:92
B:198
C:190
D:235
正确答案:【190】
10、单选题：Sam’s utility function is U (x,y)=2x + y where x is the number of x’s he consumes per week and y is the number of y’s he consumes per week. Sam has $200 a week to spend. The price of x is 4. Sam currently doesn’t consume any y. Sam has received an invitation to join a club devoted to consumption of y. If he joins the club, Sam can get a discount on the purchase of y. If he belonged to the club he could buy y for $1 a unit. How much is the most Sam would be willing to pay to join this club?
A:nothing
B:$100 a week
C: $50 a week
D:$40 a week
正确答案:【$100 a week】
第八章 单元测试
1、判断题：
The inverse demand curve P (x) for a good x measures the price per unit at which the quantity x would be demanded.
A:对
B:错
正确答案:【对】
2、判断题：
If a price changes, then changes in consumption at the intensive margin are changes that happen because consumers alter the amounts that they consume, but do not either stop consuming or start consuming the good.
A:对
B:错
正确答案:【对】
3、判断题：
If the demand function is q = 3m=p; where m is income and p is price, then the absolute value of the price elasticity of demand decreases as price increases.
A:对
B:错
正确答案:【错】
4、单选题：A peck is 1/4 of a bushel. If the price elasticity of demand for bran is -0.2 when bran ismeasured in bushels, then when bran is measured in pecks, the price elasticity of demand for bran will be:
A:-0.05
B: -0.8
C:-0.1
D: None of the above.
正确答案:【 None of the above.】
5、单选题：The demand function is described by the equation q(p) = 190- p/5. The inverse demand function is described by:
A:q(p) = 190 -5p.
B:p(q) = 950 -5q.
C:q(p)=1/(190 -p/5).
D:p(q)=1/190 -q/5.
正确答案:【p(q) = 950 -5q.】
6、判断题：Marginal revenue is equal to price if the demand curve is horizontal.
A:对
B:错
正确答案:【对】
7、单选题：The constant elasticity of demand for cigarettes has been estimated to be 0.5. To reduce smoking by 75%, approximately how much tax needs to be added to a $1 pack?
A:$0.38
B:$0.75
C:$1.5
D:$2.25
正确答案:【$1.5】
8、单选题：If the marginal cost of brewing beer is 40 cents and the profit maximizing price is 80 cents,then the price elasticity of demand is
A:-0.66
B:-1.8
C:-2
D:-2.33
正确答案:【-2.33】
9、单选题：A peck is 1/4 of a bushel. If the price elasticity of demand for bran is -0.2 when bran ismeasured in bushels, then when bran is measured in pecks, the price elasticity of demand for bran will be:
A:-0.05
B:-0.8
C:-0.1
D:None of the above.
正确答案:【None of the above.】
第九章 单元测试
1、判断题：
If the supply curve is vertical, then the amount supplied is independent of price.
A:对
B:错
正确答案:【对】
2、判断题：The supply curve slopes up and to the right. If the demand curve shifts upward to a new curve which is everywhere higher than the old curve (but possibly of different slope) and if the supply curve does not shift, then the equilibrium price and quantity must necessarily increase.
A:对
B:错
正确答案:【对】
3、判断题：An economic situation is Pareto optimal only if there is no way to make someone better off.
A:对
B:错
正确答案:【错】
4、单选题：The demand for pickles is given by p=131-2q and supply is given by p=5+7q. What is the equilibrium quantity?
A:11
B:14
C:19
D:103
正确答案:【14】
5、单选题：The demand function for fresh strawberries is q = 200-5p and the supply function isq=60+2p. What is the equilibrium price?
A:10
B:20
C:40
D:50
正确答案:【20】
6、判断题：If a quantity tax is collected from competitive suppliers of a good, placing a tax on the good causes the price paid by consumers to increase more than if the tax had been collected directly from the buyers.
A:对
B:错
正确答案:【错】
7、单选题：The demand function for x is D(p) = 65-2p and the supply function is S(p) = 20 + p. The price that should be set to restrict quantity supplied to 30 units is closest to:
A:5
B:10
C:15
D:50
正确答案:【10】
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