__________（49）A.Dark blue is the color of the nig

__________（49）

A.Dark blue is the color of the night sky and therefore associated with passivity and calm, while yellow is a day color with associations of energy and incentive.

B.Similar exposure to pure blue has exactly the opposite;it is a calming color.

C.Color psychology is concerned with the effects of color on mood,emotion,behavior.

D.Manufacturers have discovered by trial and error that sugar sells badly in green wrappings, that blue foods are considered unpalatable,and that cosmetics should never be packaged in brown.

E.If they can sense color differences then perhaps we,too,are affected by color unconsciously.

F.Experiments have shown that colors partly because of their physiological associations,also have a direct psychological effect.