题目内容：
共用题干The fact that blind people can see things using other parts of their bodies apart from their eyes may help us to understand our feelings about color._________(46)
_________(47)These discoveries have grown into a whole discipline of color psychology that now finds application in everything from fashion to interior decoration. Some of our preferences are clearly psychological.________(48)For primitive man,activity during the day meant hunting and attacking,which he soon saw as red,the color of blood and rage and the heat that came with passive defense and self-preservation.
_________(49)People exposed to bright red show an increase in respiration rate,heartbeat, and blood pressure;red is exciting._________(50)Because of its exciting connotations,red was chosen as the signal for danger,but closer analysis shows that a vivid yellow can produce a more basic state of alertness and alarm,so fire engines and ambulances in some advanced communities are now rushing around in bright yellow colors that stop the traffic dead.
__________（47）
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.
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