50. According to the passage, the behavioral effects do NOT include __________.
(A) staying awake
(B) staying focused
(C) making more coffee
(D) having a good mood

46. What is the passage mainly about? (A) The risks of drinking coffee. (B) The effects of caffeine on the body. (C) How to make a good cup of coffee. (D) How meaningless it is to consume coffee.

47. How does Mike help himself stay awake and focused? (A) He burns a lot of oil. (B) He drinks only two cups of coffee. (C) He gets energy from coffee. (D) He becomes wealthy.

48. According to the passage, which of the following is a positive effect of caffeine? (A) It improves one’s mood. (B) It is related to bone diseases. (C) It is related to cancers. (D) It helps people sleep better.

49. Most of the time, people drink coffee to __________. (A) accumulate consumers (B) lose sleep (C) consume energy (D) stay awake

31. People in the far north _____ chiefly on fish and meat. (A) abet (B) condone (C) subsist (D) impend

32. The apartment is not _____ enough for a big family to live in. (A) corpulent (B) commodious (C) superfluous (D) unquenchable

33. In the time of economic recession, most people fret about whether the society will _____ in opportunities for gaining a basic standard of living. (A) utilize (B) rife (C) abound (D) comprise

34. This film _____ to a historical event most people know nothing about. (A) alludes (B) complies (C) induces (D) commemorates

35. To ensure a long life span and a high standard of edibility, the packaging of the “indestructible” sandwich has to be as _____ as possible, with layers of heat-resistant chemical and metal foil. (A) imperious (B) imperishable (C) impervious (D) imminent II. Grammar: What follows are 10 incomplete sentences. Four choices, marked A, B, C, D are given after each sentence. You are to choose the one word or phrase that best completes the sentence.（10%）

36. _____ it to have rained this morning, I would not have gone jogging. (A) Should (B) For (C) Would (D) Were