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《微观经济学》试卷A本试卷适用于试卷所需时间120分钟。
闭卷考试，总分100分。考试日期：
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一、单项选择题：（共20小题，每题1分，共20分）
1. The adage, “There is no such thing as a free lunch,” means:
A. To get something we like, we usually have to give up another thing we like.
B. Even people on welfare have to pay for food these days.经济学类包括哪些专业
C. The cost of living is always increasing.
D. All costs are measured in dollars.
2. The invisible hand works to promote general well-being in the economy primarily through
A. government intervention B. the political process
C. self interest D. altruism
3. If a good is “normal,” then an increase in income will result in
A. no change in the demand for the good
B. a decrease in the demand for the good
C. an increase in the demand for the good
D. a lower market price
4. Wheat is the main input in the production of flour. If the price of wheat increases, all else equal, we would expect
A. the supply of flour to be unaffected B. the supply of flour to decrease
C. the supply of flour to increase D. the demand for flour to decrease
5. A person who lives to be on the sea in a boat would tend to have what type of demand for boats?
A. elastic B. inelastic C. unit elastic D. weak
6. Suppose the price of product X is reduced from $1.45 to $1.25 and, as a result, the quantity of X demanded increases from 2,000 to 2,200. Using the midpoint method, the price elasticity of demand for X in the given price range is
A. 2.00 B. 1.55 C. 1.00 D. 0.64.
7. A perfectly inelastic demand implies that
A. buyers decrease their purchases when the price rises.
B. buyers respond substantially to an increase in price.
C. buyers increase their purchases only slightly when the price falls.
D. buyers purchase the same amount when the price rises or falls.
8. A legal maximum price at which a good can be sold is a
A. price floor B. price stabilization C. price ceiling D. price support
9. The minimum wage is an example of
A. a price ceiling B. a price floor
C. a free-market process D. an efficient labor allocation mechanism
10. Which of the following is the most correct statement about tax burdens?
A. A tax burden falls most heavily on the side of the market that is elastic.
B. A tax burden falls most heavily on the side of the market that is inelastic.
C. A tax burden falls most heavily on the side of the market that is closer to unit elastic.
D. A tax burden is distributed independently of relative elasticities of supply and demand.
11. If a consumer is willing and able to pay $15.50 for a particular good but the price of the good is $16.00, then
A. the consumer would have consumer surplus of $0.50.
B. the consumer would not purchase the good and would not have any consumer surplus.
C. the consumer would increase his/her willingness and ability to pay by earning more.
D. the market must not be a perfectly competitive market.
12. Which of the following is NOT correct?
A. consumer surplus = value to buyers - amount paid by buyers
B. producer surplus = amount received by sellers - cost of sellers
C. total surplus = value to buyers - amount paid by buyers + amount received by sellers - costs of sellers
D. total surplus = value to sellers - costs of sellers
13. The “invisible hand” refers to
A. the marketplace guiding the self-interests of market participants into promoting general economic well-being.
B. the marketplace as a place where government looks out for the self-interests of individual participants in the market.
C. the equity that results from market forces allocating the goods produced in the market.
D. the automatic maximization of consumer surplus in free markets.
14. When income increases, a budget constraint
A. will shift inward, parallel to its initial position.
B. will shift outward, parallel to its initial position.
C. will pivot around the "Y" axis.
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