26. If the price elasticity of demand for pineapples is 0.75, then a 4% increase in the price of pineapples will lead to a:
(A) 3% decrease in the quantity of pineapples demanded.
(B) 3% increase in the quantity of pineapples demanded.
(C) 0.75% decrease in the quantity of pineapples demanded.
(D) 0.75% increase in the quantity of pineapples demanded.

22. Which of the following is NOT a characteristic of a market in equilibrium? (A) There is neither excess supply nor excess demand. (B) Neither buyers nor sellers want the price to change. (C) Sellers can sell as many units as they want at the equilibrium price. (D) Buyers can buy as many units as they want at the equilibrium price.

23. An increase in both the equilibrium price and the equilibrium quantity of DVD players is best explained by a(n): (A) increase in the demand for DVD players. (B) increase in the supply of DVD players. (C)decrease in the supply of DVD player. (D)decrease in the demand for DVD players.

24.是商品 X 與 Y 的交 叉彈性值，其值為負。如果 的絕對值愈大，則代表 X 與 Y 的 (A) 替代程度愈高。 (B) 替代程度愈低。 (C) 互補程度愈高。 (D) 互補程度愈低。

25. 如果政府課稅造成供給曲線往上移，則該稅是 (A) 對買者課的。 (B) 對賣者課的。 (C) 同時對買者與賣者課的。 (D) 無法判斷。

27. Suppose a cup of tea costs $0.60 and a scone costs $1.20. If Edith spends all of her income on these two goods, and at her current level of consumption, she receives a marginal utility of 6 utils from the last cup of tea she buys and a marginal utility of 24 utils from the last scone she buys, then Edith should: (A) buy more tea and fewer scones. (B) buy less tea and more scones. (C) not change her consumption of tea and scones. (D) buy more tea and more scones.

28. Suppose you want to maximize your total utility. If your marginal utility per dollar spent is higher for one good than for all others, then you should: (A) reallocate your spending away from that good. (B) reallocate your spending towards that good. (C) spend more on all goods. (D) spend less on all goods.

29. 假設某藥品的邊際成本是固定的。在該藥品的專利權到期之後， (A) 俗名藥的價格遠高於該藥品之前的價格。 (B) 俗名藥的價格遠低於該藥品之前的價格。 (C) 俗名藥的價格接近邊際成本。 (D) 以上 (b) 與 (c) 均正確。

30. 如果利率上升使年老時的消費增加，則 (A) 對年輕時的消費而言，利率上升的替代效果大於所得效果。 (B) 對年輕時的消費而言，利率上升的替代效果小於所得效果。 (C) 對年輕時的消費而言，利率上升的替代效果等於所得效果。 (D) 以上皆有可能。

31. 根據下圖(圖 2)，當市場價格超過多少時會吸引其他廠商加入市場？ (A) P1。 (B) P2。 (C) P3。 (D) 以上皆非。

32. 根據下圖(圖 2)，當市場價格為何時廠商會歇業？ (A) 小於 P1。 (B) 大於 P1 但小於 P3。 (C) 等於 P2。 (D) 小於 P3。