内蒙古农业大学
2011/2012学年第 一 学期
微观经济学课程考试试卷(A）
题 号 | 一 | 二 | 三 | 四 | 五 | 总分 |
分 值 | 15 | 20 | 20 | 20 | 25 | 100 |
得 分 | | | | | | |
| | | | | | |
Plea print. If the answer is unrecognizable, it will be counted as wrong answer.
You should answer in English or Chine， numbers, or graphs.
为谁工作
Ⅰ. Concepts（3 points each， total 15 points）
1。 Opportunity cost
2. Externality
3。 Deadweight loss
4. Competitive market
数学英语怎么读5. Diminishing marginal product
Ⅱ。 True or Fal Questions (2 points each，total 20 points)
（ f ) 1。If apple and orange are substitutes， when price of apple increas, then the demand for orange decreas。
( f ) 2。The price elasticity of demand remains constant along a linear demand curve。
( t ） 3.When price ceiling is below equilibrium price in a competitive market, the price ceiling is binding, and there is shortage in the market天云山.
（ t ） 4.Total surplus is the values to buyers minus the cost to llers.
( f ） 5。 When taxed is levied on the good in a competitive market, the tax revenue got by the government equals the fall in producer and consumer surplus.
( f ） 6。 If the world price of a good exceeds the domestic price, the country should import the good instead to export it。
（ t ） 7.In the prence of a negative externality, Qoptimum is therefore larger than the Qmarket。
( f ） 8。Price always equals to marginal revenue for all kinds of firms.
（ t ) 9。 Demand curve for a monopoly firm is the market demand curve.
（ f ) 10.In the long run, monopolistic competitive firms produce at their lowest average total cost。
Ⅲ。 Single Choice Questions （2 points each，total 20 points)
( d ) 1。 If the cross—price elasticity of demand for two goods is negative， the two good are？
A.Luxury goods.
B.Necessities.
C.Substitutes。
D.Complements。
（ a ) 2. Although buyers and llers share the burden of tax together, llers share more if the good is________
A.Food。
B.Clothes.
C. Housing.
D. Entertainment good.
微笑的季节( c ） 3。Consumer surplus is the area＿＿＿＿
A.Above the supply curve and below the price。
B.Below the supply curve and below the price
C.Below the demand curve and above the price
D.Below the demand curve and below the price
( a揣测的意思 ） 4.If we double the size of tax under the perfectly competitive market， so the deadweight loss _____________
A.Is four times as the original one.
B.Is twice as the original one。
C.Remain the same
D.May increa or decrea。
( b ) 5. Which of the following items is an example of public goods?
A.Fishes in the ocean.
B.National defen.
C.Apples on a houhold’s apple tree.
D.Hot dogs in a picnic。
( ) 6。 If the production function has the attribute of diminishing marginal returns, the slope of the total cost curve which is associated with the production function
A.Increas when produced quantity increa
B.Decreas when produced quantity increa。
C.Remains the same。
D.May be any one mentioned above。
( d ) 7。 If the marginal cost curve is below the average total cost curve,_________.
A.Average total cost increas.
B.Average fixed cost increas.
C.Average total cost achieves its minimum.
古时候D.Average total cost decreas.
（ b ) 8. If a competitive firm achieve its long-run equilibrium state，
A.Its average total cost achieves its minimum。
B.肩膀酸疼Marginal cost equals marginal revenue.
C.It gets zero economic profit.
D.All the items mentioned above are correct.
( a ) 9。 The inefficiency of monopoly is caud by_______
A.Deficient production of monopoly.
B.Overproduction of monopoly.
C.Monopolistic profit。
D.Monopolistic loss。
（ a ） 10.The meaning of “monopolistic” in “monopolistic competition” is ______
A。 monopolistic competitive firm faces a downward sloping demand curve。
B. monopolistic competitive firm can freely enter and exit the market。
C。 monopolistic competitive firm charges the price as its marginal cost.
D。 monopolistic competitive firm produce at its efficient scale.
Ⅳ。 Problems for calculation （total 20 points) 1. The monopoly's cost is a function of its output， which is C(Q)=Q刺龙芽2+12, and the monopoly faces the linear inver demand function: P=24—Q （total 10 points）
