The fact that blind people can see things using parts of their bodies apart from their eye

The fact that blind people can see things using parts of their bodies apart from their eyes may help us to understand our feelings about color．If they can sense color differences, then perhaps we, too, are affected by color without knowing it．Salesmen have discovered by experience over a long period of time that sugar sells badly in green wrappings, that blue foods are considered not agreeable to the taste, and that cosmetics（化妆品） should never be packed in brown．These discoveries have grown into a whole subject of color psychology．
Some of our preferences are clearly psychological．Dark blue is the color of the night sky and therefore connected with calm, while yellow is a day color connected with energy and encouragement．Experiments have shown that colors, partly because they are connected with psychology, also have a direct effect on people's mind．People in bright red surroundings show an increase in breathing speed, heartbeat and blood pressure．Red is exciting．Pure blue has exactly the opposite effect; it is a calming color．Being exciting, red was chosen as the signal for danger, but a closer study shows that a bright yellow can produce a more basic state of alarm, so fire engines in some advanced areas are now rushing around in bright yellow colors that stop buses, trucks and cars．
【小题1】The passage tells us that salesmen have     ．A．tried colors on blind peopleB．found out that colors affect salesC．developed a special subject of color psychologyD．discovered the relationship between color and psychology【小题2】It can be inferred from the passage that     _．A．blind people cannot sense color differencesB．foods sell well in green or blue wrappingsC．w hat color we prefer depends on our state of mindD．a bright color has exactly the opposite effect to red【小题3】The most effective color in the passage for warning people is    ．A．redB．dark blueC．greenD．bright yellow【小题4】If someone is in an angry mood, which color is better for him to bee quiet?A．Red．B．Dark blue． C．Brown． D．Bright yellow【小题5】Which of the following do you think is the best title for the passage?A．Colors and FeelingsB．Colors and SalesC．The Blind and ColorsD．Preferences for ColorsB