45. What is the author’s tone while saying “a little extra shut-eye may get you there”?
(A) Doubtful.
(B) Entertaining.
(C) Optimistic.
(D) Assertive.
(E) Sarcastic.

41. What is the article mainly about? (A) Cognition and emotion in sleep. (B) Difficulties in handling sleep deprivation. (C) Amount of sleep needed for ordinary people. (D) Reasons why people oversleep and ways to fix it. (E) Dangers of insufficient sleep and some possible solutions.

42. What does the expression in the boardroom or behind the wheel in Paragraph 2 mean? (A) When staying abroad or fixing cars. (B) When having a meeting or driving on the road. (C) When rowing a boat or working in the factory. (D) When waiting for flights or setting up machine. (E) When making a speech or riding a wheelchair.

43. Which of the following assures you that you have sufficient sleep? (A) Sleeping for eight hours a day. (B) Getting dull after seven hours of sleep. (C) Waking up right away on hearing your clock alarm. (D) Feeling refreshed after a sleep for at least six hours. (E) Sleeping for five extra minutes after the alarm goes off.

44. Which of the following is NOT true about sleep deprivation? (A) One feels energetic after experiencing it. (B) It may lead to accidents when one drives. (C) Lack of sleep prolongs one’s reaction time. (D) It causes people to get angry and frustrated easily. (E) Its accompanying problems may be improved by a nap.

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.

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.

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