36. What did Hubel and Wiesel research? (A)How our vision works. (B) How circles and lines contrast. (C) How our brains solve puzzles. (D)How painters change over time.

37. How do Picasso's later paintings work like the red dot on a mother bird's beak? (A) In both situations, the details are not important. (B) In both situations, the color red is used for contrast. (C) In both situations, dots and sticks play an important role. (D) In both situations, an important detail represents the whole.