Why is pink or purple a color for girls and blue or brown for boys？
The answer depends largely （41）___cultural values as well as personal experiences．To the Egyptians，green was a color（42）___represented the hope and joy of spring，while for Muslims，it means heaven．Red is a symbol of good luck in many cultures．During the Spring Festival in China，children （43）___（give） money in a red envelope to bring good fortune in the New Year．For many nations，blue is a symbol of protection and religious beliefs．Greek people often wear a blue necklace hoping to protect （44）___against evils（灾祸）．
People's（45）___（choose） of colors is also influenced by their bodies'reactions toward them．Green is said to be （46）___most restful color．It has the ability to reduce pain and relax people both mentally （47）___physically．People （48）___（work） in green environment have been found to have fewer stomach aches．
Red can cause a person's blood pressure to rise and increase people's appetites（食欲）．Many decorators will include different shades of red in the restaurant．And many commercial websites will have a red"Buy Now"button because red is a color that （49）___（easy） catches a person's eye．
Blue is another calming color．Unlike red，blue is believed to cause people to lose appetite．So （50）___you want to eat less，some suggest that eating from blue plates can help．
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