課程名稱︰經濟學一
課程性質︰選修兼A5通識
課程教師︰李曉雲
開課學院：社科院
開課系所︰經濟系
考試日期（年月日）︰102.10.25
考試時限（分鐘）：120 min.
是否需發放獎勵金：是
（如未明確表示，則不予發放）
試題 :
※請作答於答案卷上，可使用鉛筆、計算機、翻譯機；題目不用交回。
※滿分100分。
I. 選擇題，每題４分。
1. Which of the following is not generally regarded by economists as a
legitimate reason for the government to intervene in a market?
a. to promote efficiency
b. to promote equality
c. to enforce property rights
d. to protect an industry from foreign competition
2. When constructing a production possibilities frontier, which of the
following assumptions is not made?
a. The economy produces only two goods or two types of goods.
b. Firms produce goods using factors of production.
c. The technology available to firms is given.
d. The quantities of the factors of production that are available are
increasing over the relevant time period.
Table 1
Assume that the farmer and the rancher can switch between producing meat
and producing potatoes at a constant rate.
┌────┬─────────┬─────────┐
│ │Labor Hours Needed│ Pounds Produced │
│ │to Make 1 Pound of│ in 24 Hours │
│ ├───┬─────┼───┬─────┤
│ │ Meat │ Potatoes │ Meat │ Potatoes │
├────┼───┼─────┼───┼─────┤
│Farmer │ 8 │ 2 │ 3 │ 12 │
├────┼───┼─────┼───┼─────┤
│Rancher │ 3 │ 6 │ 8 │ 4 │
└────┴───┴─────┴───┴─────┘
3. Refer to Table 1. Assume that the farmer and the rancher each has 24 labor
hours available. If each person divides his time equally between the
production of meat and potatoes, then total production is
a. 3 pounds of meat and 12 pounds of potatoes.
b. 5.5 pounds of meat and 8 pounds of potatoes.
c. 8 pounds of meat and 4 pounds of potatoes.
d. 11 pounds of meat and 16 pounds of potatoes.
4. Refer to Table 1. Which of the following combinations of meat and potatoes
could the rancher not produce in 24 hours?
a. 2 pounds of meat and 3 pounds of potatoes.
b. 4 pounds of meat and 2 pounds of potatoes.
c. 6 pounds of meat and 1 pounds of potatoes.
d. 8 pounds of meat and 0.5 pounds of potatoes.
5. When a country has a comparative advantage in producing a certain good,
a. the country should import that good.
b. the country should produce just enough of that good for its own
consumption.
c. the country’s opportunity cost of that good is high relative to other
countries’ opportunity costs of that same good.
d. None of the above is correct.
6. Recent forest fires in the western states are expected to cause the price of
lumber to rise in the next six months. As a result, we can expect the supply
of lumber to
a. fall in six months but not now.
b. increase in six months when the price goes up.
c. fall now.
d. increase now to meet as much demand as possible
7. Music compact discs are normal goods. What will happen to the equilibrium
price and quantity of music compact discs if musicians accept lower
royalties, compact disc players become cheaper, more firms start producing
music compact discs, and music lovers experience an increase in income?
a. Price will fall, and the effect on quantity is ambiguous.
b. Price will rise, and the effect on quantity is ambiguous.
c. Quantity will fall, and the effect on price is ambiguous.
d. Quantity will rise, and the effect on price is ambiguous.
8. Assume Diana buys computers in a competitive market. It follows that
a. Diana has a limited number of sellers to turn to when she buys a computer.
b. Diana will find herself negotiating with sellers whenever she buys a
computer.
c. if Diana buys a large number of computers, the price of computers will
rise noticeably.
d. None of the above is correct.
9. Suppose scientists provide evidence that chocolate pudding increases the bad
cholesterol levels of those who eat it. We would expect to see
a. no change in the demand for chocolate pudding.
b. a decrease in the demand for chocolate pudding.
c. an increase in the demand for chocolate pudding.
d. a decrease in the supply of chocolate pudding.
Figure 1
↑Price
∣
∣
∣
∣ SupplyA SupplyB SupplyC
∣ ／ ╱ ╱
∣ ／ ╱ ╱
∣ ／ ╱ ╱
∣ ／ ╱ ╱
∣／ ╱ ╱
∣ ╱ ╱
∣╱ ╱
———————————→
Quantity
10. Refer to Figure 1. Which of the following would cause the supply curve to
shift from Supply A to Supply C in the market for winter coats?
a. an increase in the price of winter coats
b. a decrease in the number of firms selling winter coats
c. a decrease in the price of zippers and snaps
d. a decrease in the price of winter hats and gloves
11. Refer to Figure 1. Which of the following would cause the supply curve to
shift from Supply B to Supply A in the market for disposable ballpoint
pens?
a. a decrease in the price of disposable ballpoint pens
b. an increase in the price of fountain pens
c. an increase in the price of ink
d. an improvement in technology that allows firms to use less labor in the
production of disposable ballpoint pens
12. A perfectly elastic demand implies that
a. buyers will not respond to any change in price.
b. any rise in price above that represented by the demand curve will result
in a quantity demanded of zero.
c. quantity demanded and price change by the same percent as we move along
the demand curve.
d. price will rise by an infinite amount when there is a change in quantity
demanded.
13. Pierre says that he will spend exactly 75 cents a day on candy bars,
regardless of the price of candy bars. Pierre’s demand for candy bars is
a. perfectly elastic.
b. unit elastic.
c. perfectly inelastic.
d. None of the above answers is correct.
Figure 2
↑Price
∣
∣ ＼
P2 ∣________╲
∣ A | C＼
P2 ∣_______|____＼
∣ | | ＼
∣ | | ＼
∣ B | D | ＼
∣ | | ＼
∣ | | Demand
∣ | |
———————————→
Q2 Q1 Quantity
14. Refer to Figure 2. If rectangle D is larger than rectangle A, then
a. demand is elastic between prices P1 and P2.
b. a decrease in price from P2 to P1 will cause an increase in total
revenue.
c. the magnitude of the percent change in price between P1 and P2 is
smaller than the magnitude of the corresponding percent change in
quantity demanded.
d. All of the above are correct.
15. Other things equal, the demand for a good tends to be more inelastic, the
a. fewer the available substitutes.
b. longer the time period considered.
c. more the good is considered a luxury good.
d. more narrowly defined is the market for the good.
II. 計算問答題
一、(25%)若社會上有甲乙兩人，他們的需求函數分別是：P=1-Q、P=4-2Q，有3家供給
商，每家的供給函數皆為P=1+3Q
※除不盡請用分數表示
(1) 請計算出市場需求函數(5%)和市場供給函數(3%)
Hint:市場供給函數為個別水平加總，請注意範圍
(2) 請問市場均衡價格(2%)及數量(2%)各為多少
(3) 甲(2%)、乙(2%)各購買多少
(4) 今若個別廠商的供給函數改為P=1+2Q，請重新計算均衡價格(2%)及數量(2%)，
並利用中點定理計算其弧彈性(3%)。
(5) 試問上一小題計算出來的弧彈性為供給彈性或需求彈性？(2%)
二、(15%)請判斷下列各種情況分別為需求、供給或供需同時變動，並繪圖說明其Supply
curve & Demand curve 的變動方向。
Hint:除非題目另有說明，否則不需考慮預期的因素
(1) 在中華職棒擁有號稱「百萬象迷」的黃衫軍兄弟象隊日前宣布退出不玩了，並
開始於台北市慶城街販賣部兜售其周邊商品，每天都吸引大批球迷前往採購。
試述此事件對於兄弟象隊商品的市場有何影響。(5%)
(2) Apple公司不久前推出ipad-air，號稱更快更輕(400g左右)的新一代平板，其
熱門程度在消息公開後短短幾分鐘內PTT即有鄉民註冊相關ID可見一斑。試述
此平板電腦的問世，對於ipad4市場造成何種影響。(5%)
(3) 中央銀行總裁彭淮南日前對外宣布不調高利率的同時，也向各界喊話說利率不
可能一直在低點，對於炒房業者及建商有語帶警告的意味。試述彭總裁這一席
話，對於房地產市場可能會造成何種影響。(5%)
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