47. What kind of the following spoons makes food taste sweeter? (A) Big and white (B) Big and black (C) Small and white (D) Small and black

49. Which of the following descriptions is NOT true? (A) People make judgments about food before eating. (B) Cheese on a fork tastes saltier than the one on a knife. (C) The results reported in this passage are supported by real experiments. (D) Restaurants can improve customers’ eating experience based on the research results.