Microeconomics课程试卷B.doc

Microeconomics课程试卷B 一、选择题：（共小题，每小题分，共0分） . A Giffen good: A. has an upward-sloping demand curve. B. has a downward-sloping demand curve. C. has a horizontal demand curve. D. has a vertical demand curve. 2. The consumer optimum occurs at: A. any point of intersection between the budget line and an indifference curve. B. a point of tangency between the budget line and an indifference curve. C. the point where the slope of the indifference curve equals the ratio of the quantities. D. a point where the budget line cuts the curve from below. 3. The slope of the budget constraint line is equal to: A. the ratio of marginal utilities. B. the ratio of money income to the price of the good on the horizontal axis. C. the ratio of money income to the price of the good on the vertical axis. D. the relative price of the two goods?the price of one good compared with the price of the other. 4.Assume the demand curve for compact discs slopes downwards, and the supply curve slopes upwards. If the price of CD players decreases, then: A. the equilibrium price of compact discs will fall B. the equilibrium price of compact discs will rise C. the equilibrium price of compact discs will stay the same D. None of the above are correct 5. Implicit costs are: A. the payments made to labour only. B. the payments made by the firm to others. C. the opportunity cost of resources owned by the firm. D. the same as accounting profit. 6. When marginal cost is rising: A. average variable cost may be rising or falling. B. average variable cost must be falling. C．average variable cost must be rising. D. average fixed cost must be rising. 7. Economic profits for perfectly competitive firms: A. will continue in the long run for a few efficient firms. B. will shift the industry demand function rightward. C. will attract new firms into the industry in the long run. D. will result in an increase in long-run equilibrium price. 8.If the demand for milk increases when the price of pickles increases (ceteris