单项选择题
A.Red. B.Green. C.Yellow. D.Black.
A.she drives the car more carefully B.she sees the road more clearly C.she can put on the brakes more quickly D.she has less chance of being color blind
A.Black stands for unhappiness. B.Black makes people think of night. C.Black makes people think of sorrow. D.Black is the color of the mournin