33. 根據下圖(圖 3)，B 點表示

 
(A) MRS XY ＞ PX / PY 。
(B) MRS XY = PX / PY 。
(C) MRS XY ＜ PX / PY 。
(D) MRS XY ＞ PY / PX 。

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。

34. 春嬌原本每週付 50 美元請志明幫她割草。後來政府對志明課 10 美元的割草稅，志明就把價格提 高為 60 美元。在此情況下，生產者剩餘、消費者剩餘與無謂損失的變動各為何？ (A) 0 美元，0 美元，－10 美元 (B) 0 美元，－10 美元，0 美元 (C)＋10 美元，－10 美元，＋10 美元 (D)＋10 美元，－10 美元，

35. 根據下表(表 2)，A 店與 B 店是鎮上唯二的雜貨店。上表顯示兩家店在不同訂價策略下的年利潤。 方塊中的數字為 (A 店利潤, B 店利潤)。根據上表，如果 B 店選擇低價，則 A 店會如何反應且其利潤為何？ (A) 訂低價，＄500。 (B) 訂高價，＄800。 (C) 訂低價，＄100。 (D) 訂高價，＄100。

複選題1. For the reaction 2N2O5(g) 4NO2(g) + O2(g). (AB) The amount of NO2 in the reaction container is four times the amount of O2regardless how the reaction mixture is prepared for the reaction to oceur. (AC)At the moment when N2O5(g) is first transferred to the empty reaction container. the rate of disappearance of N2O5 is more than two times the rate of formation of O2. (AD) At any instant. the rate of formation of NO2 is two times the rate of disappearance of N2O5. (AE) The reaction is a second-order reaction. just like any reactions of 2M2N5 → 4MN2 + N2. (BC)If the measured initial rates are M/sec for the initial concentrations of N2O5 of 0.0050 M and 0.010 M. respectively, the overall reaction order is one. (BD) The activation energy of the reaction may be derived from measuring the rate constants at two different temperatures.

複選題2. Which of the following statements related to chemical bonding is (are) correct? (AB) The hybrid orbital used by the N atom in urea. H2NCONH2. is sp3. (AC) H2S has greater ionic character than H2O. (AD) The bond enthalpies (kJ/mol) of C-H. C-C. C=C. C-Br. H-Br. and Br-Br are 412. 348. 612. 276. and 366. and 193. respectively. The heat released when ethane. CH2=CH2. reacts with HBr to produce CH3CH2Br is 58 kJ/mol. (AE) Highly clcctroncgative atoms have low ionization energies and high electron affinities. (BC) NO2 is not a radical. (BD)The electronic configuration in the oxide ion in BaO is [He]2s22p6.

複選題3. Which of the following statements is (are) correct? (AB) Electron diffraction by a crystal can support de Broglie's hypothesis of the wave nature of matter. (AC) Ultraviolet light, microwav ves, and gamma rays travel through empty space at different speed. (AD) Speeding tickets based on the radar reading are uncertain becausc of the Heisenberg uncertainty principle. (AE) People have difficulty in measuring both the position and velocity of objects in everyday life. (BC) The kinetic energy of the electrons ejected by the incident radiation increases with the radiation intensity. (BD) For the hydrogen atom. the Lyman series of lines are found only in the ultraviolet region of the spectrum.

複選題4. Which of the following kinetics statements is (are) correct? (AB) If the rate of a reaction increases by a factor of 8 when the concentration of a reactant increases by a factor of 2. the order of the reaction with respect to this reactant is 4. (AC) Decomposition of nitrous oxide is a zero-order reaction. (AD) The rate law of a reaction can be predicted from reaction stoichiometry. (AE) The rate law of a zeroth-order reaction is rate = k. (BC) An enzyme-catalyzed reaction may appear to be zero-order if the number of enzyme molecules in the reaction is limited in relation to substrate molecules. (BD) Even complex biological processes may exhibit Arhenius behavior within certain temperature ranges.