試題詳解

50. Which of the following inferences can be drawn from the passage?
(A) Future studies should monitor the use of nicotine, alcohol, and caffeine.
(B) The effects of smoking and drinking alcohol before sleep are hard to find.
(C) Scientists need to find out why drinking coffee before bed increases sleep quality.
(D) People would feel more relaxed the next morning if they drink wine before bedtime.