課程名稱︰ 經濟學甲上
課程性質︰ 必修
課程教師︰ 吳忠吉
開課學院： 管理學院
開課系所︰ 工管系
考試時間︰ 11/13 15:30-17:10
是否需發放獎勵金：是
（如未明確表示，則不予發放）
試題 :
單選題，每題4分。題目不難，請沉著作答。
1. College-age athletes who drop out of school to play professional sports
A. are making bad economic decision, since they cannot play forever.
B. are unaware of their opportunity cost of attending college.
C. underestimate the value of a college education.
D. are well aware that their opportunity cost of attending college is very
high.
2. Suppose that a year ago you bought one share of Disney stock for $100, one
share of Pepsi for $30, and one share of Microsoft for $200. Currently, each
stock is priced at $100. If you cannot predict the future price of any of
these stocks and there are no tax advantages or disadvantages associated with
selling stock. As a rational decision maker, which stock should you sell if
you need to raise $100?
A. Disney.
B. Pepsi.
C. Microsoft.
D. It doesn't matter which one you sell.
3. The difference between positive and normative science is that positive
science deals with:
A. what has been, whereas normative science deals with what will be.
B. value judgments, whereas normative science deals with the facts.
C. testable propositions, whereas normative science deals with value
judgments.
D. what will be, whereas normative science deals with what has been.
4. If your favorite restaurant lowered its prices, how would the effect be
shown correctly?
A. As an increase in the demand curve.
B. As a decrease in the demand curve.
C. As a movement downward along a demand curve.
D. As a movement upward along a demand curve.
5. Which of the following most appropriately illustrates the law of supply?
A. Corporation XYZ has access to more labor resources so it increases
production.
B. Because Sparrow Cable is the town's only cable company, it can charge a
relatively high price for its services.
C. As the price of burgers rises, Joe's Burgers is willing to sell more
burgers.
D. As the price of cars increases, people are willing to buy fewer cars.
6. Assuming that wheat and corn can both be grown on the same type of land, a
decrease in the price of corn, other thing be equal, will cause:
A. a rightward shift in the supply curve for corn.
B. an upward movement along the supply for wheat.
C. a leftward shift in the supply curve for wheat.
D. a rightward shift in the supply curve for wheat.
7. Faculties pay $15 per year for a parking permit, but many complain that
they can't find a parking place in designated university lots. This suggests
that
A. the price paid is above equilibrium.
B. the price paid is below equilibrium.
C. the price paid is at equilibrium.
D. the university should make parking free.
8. The long-run average cost curve most directly shows
A. the lowest per unit cost of producing a given level of output.
B. the additional cost of producing an extra unit of output.
C. the cost saving from substituting capital for labor.
D. the gain to producers from innovation.
9. "A number of mass transit systems have been experiencing declining
revenues despite fare increases." Assuming that the demand for mass transit
has not changed (i.e., that the demand curve has not shifted), the above
statement implies that
A. the demand for mass transit is elastic with respect to price.
B. the demand for mass transit is inelastic with respect to price.
C. mass transit is a normal good.
D. mass transit is an inferior good.
10. Tu Hsing and Hui S. Chang have estimated that the elasticity of demand of
enrollment at private colleges has increased. Which is the most plausible
explanation for this?
A. College tuition has become a smaller proportion of total income.
B. College has become more of a necessity to getting a job.
C. The number of community colleges has risen.
D. Fewer substitutes to private education have become available.
11. Suppose the supply curve for a good is vertical. We know that supply is
A. price elastic.
B. perfectly price inelastic.
C. unit price elastic.
D. perfectly price elastic.
12. If the proportionate change in quantity supplied exceeds the
proportionate change in price, and demand shifts to the left:
A. price will fall significantly; quantity hardly changes at all.
B. price will hardly change at all; quantity will fall significantly.
C. price will fall significantly as will quantity.
D. price and quantity will hardly change at all.
13. The cross-price elasticity of Toyotas and Nissans is a positive number.
This would indicate that Toyotas and Nissans are
A. substitutes.
B. complements.
C. luxuries.
D. necessities.
14. Refer to the graph below. James hates eating vegetables, but only if he
eats them will his mother allow him to eat his favorite steaks. For James
the indifference curve between vegetables and steaks looks like:
15. If the consumer's demand curve for a certain commodity is vertical, then
for the consumer this commodity must be:
A. a normal good.
B. an inferior good.
C. a Giffen good.
D. a free good.
答案必須附說明，未作解釋的答案概不計分。
1. Suppose coffee and tea are substitute goods. Suppose a drought last season
reduced the equilibrium quantity of tea dramatically. Using two graphs, one
for tea and one for coffee, depict and then explain in words the effect of
the drought on the price and quantity of tea and coffee.（10%）
2. Senator Ernest Hollings once wrote that "consumers do not benefit from
lower-priced imports. Glance through some mail-order catalogs and you'll see
that consumers pay exactly the same price for clothing whether it is domestic
or imported." Does this argument make sense? Explain. （10%）
3. Nami is deciding how much to consume and how much to save for retirement.
To keep things simple, let's divide her lifetime into two periods: young and
old. When young, she earns $100,000. When she is old, she will consume what
she has saved. Suppose that the interest rate is 10% per period. She has
particular preferences: Her lifetime utility depends on the lowest level of
consumption during the two periods of her life. That is,
Utility＝Minimum { consumption when young, consumption when old }
a. Draw Nami's indifference curves. （6%）
b. Draw the budget constraint and the optimum. （8%）
c. When the interest rate increases, does this person save more or less?
Explaining your answer using income and substitution effects. （6%）
4. Let the following table represent the total output that results from
various levels of employment by a firm with labor as the only variable input.
Units of Labor 1 2 3 4 5 6 7 8
Total Product 10 30 60 100 150 190 220 240
Marginal Product
Average Product
Variable Cost
AVC
Marginal Cost
a. Calculate the marginal product and average product of the workers and the
total labor cost (variable cost), marginal cost, and average variable cost
(AVC) if wages are $5 per unit of labor. （10%）
b. Use these data to graph the firm's production function. Explain its shape.
（5%）
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