50. What accounts for the major part of Azerbaijan’s economy?
(A) Heavy industry.
(B) Food industry.
(C) Agriculture.
(D) Textile industry.
(E) Household appliances.

46. Which of the following is NOT discussed about Azerbaijan in the article? (A) Climate. (B) Natural resources. (C) Economy. (D) History. (E) Social order.

47. Why did Azerbaijan people see invading armies so often in history? (A) Other countries came for the abundant agricultural products. (B) The ethnic diversity of Azerbaijan constantly led to civil wars. (C) Azerbaijan made a convenient route between Europe and Asia. (D) The rich natural resources of Azerbaijan attracted many invaders. (E) The countries around Azerbaijan often fell into wars with one another.

48. When was a pure Azerbaijan nation established in history, in which all Azerbaijan constituted the nation? (A) 1000’s. (B) 1500’s. (C) 1700’s. (D) 1800’s. (E) 1900’s.

49. What does the word deposits in Paragraph 4 refer to? (A) Mountains. (B) Forests. (C) Eggs. (D) wildlife. (E) Petroleum.

1. 反應式：2MnO4 − + 5H2O2 + 6H+ → 2Mn2+ + 8H2O + 5O2 牽涉多少電子的轉移？ (A) 10 (B) 8 (C) 6 (D) 4

2. N2 和 N2O 的逸散(effusion)速率比值為何？ (A) 0.637 (B) 1.57 (C) 1.25 (D) 0.798

3. 2.15 克的氣體樣品在標準狀態下體積為 750 毫升，該氣體在 125 °C 的分子量為何？ (A) 30.7 (B) 64.2 (C) 70.1 (D) 75.0

4. 空氣的平均分子量為 29.0 g/mol。在 1 大氣壓和 30 °C 之下，空氣的密度為何？ (A) 2.90 g/L (B) 1.45 g/mL (C) 1.17 g/L (D) 1.29 g/L

5. 氮氣和氫氣反應生成氨氣。在 200 °C 的密閉容器中混合一大氣壓的氮氣和二大氣壓的氫氣。當反應達到平衡時，容 器的總壓為二大氣壓。計算平衡時氫氣的分壓。 (A) 0.5 大氣壓 (B) 1.0 大氣壓 (C) 1.5 大氣壓 (D) 2.0 大氣壓

6. 在 115 °C 之下，反應：2NOCl2(g) 2NO(g) + Cl2(g) 的平衡常數為 0.0150。計算 KP 值。 (A) 0.0150 (B) 0.478 (C) 0.142 (D) 1.41 × 10-4