43.
(A)above
(B)along
(C)among
(D) around

39. The students left the classroom with the air-conditioner ________ and the fans turned on, which caused huge waste of electricity. (A)being operated(B)operated (C)operating(D) was operating

40. The enthusiastic worker had the least difficulty of all the employees ________ worked in the accounting department. (A)who(B)whom (C)whose(D) which

41. (A)in(B)that (C)to(D) while

42. (A)releasing(B)is released (C)has released(D) has been released

44. (A)With regard to(B)In addition to (C)As part of(D) To speak of

45. (A)A(B)As (C)The(D) For

46. What is the purpose of the passage? (A)To argue for the importance of caffeine consumption in a day. (B)To illustrate how to sleep well after drinking afternoon coffee. (C)To dispel the misconception of caffeine overdose before sleep. (D)To report a recent study on caffeine consumption before sleep.

47. According to the passage, why is the study significant? (A)The study was first to examine the effect of various amount of caffeine on nightly sleep. (B)The study was first to include participants’ written sleep diaries to keep their sleep records. (C)The study investigated the effect of caffeine on nightly sleep in specific times before bedtime. (D)The study recruited volunteer males and females to participate in the experiment on caffeine consumption.

48. What does the word both in the third paragraph refer to? (A)Sleep time and sleep efficiency.(B)At bedtime and three hours before bed. (C)Three hours and six hours before bedtime.(D) Caffeine consumptions and sleep perception.

49. What was contradictory between the volunteers’ perceptions and the researchers’ observation? (A)The amount of coffee consumption 6 hours before bedtime. (B)Duration of nightly sleep at three different points of coffee drinking. (C)Sleep time and sleep quality when having coffee 6 hours before bedtime. (D)Efficiency in falling completely asleep at three different points of coffee drinking.