“民以食为天”。人类在其相当久远的进化和发展过程中，同自己生活范围内的复杂而又恶劣的大自然进行了殊死的搏斗。在这种长期而又艰苦的斗争中，人类凭借自己的聪明和智慧发明了钻术取火，懂得了种植业，从而跨越了“茹毛饮血”的自然饮食阶段，进人了自觉的有意识的调制饮? “People live on their own’s food.” Humans, in their rather long history of evolution and development, waged desperate struggle against the complex and abominable nature within their own sphere of life. In this long and arduous struggle, mankind, by virtue of his own cleverness and wisdom, invented the technique of drilling fire and understanding of the planting industry so as to cross the natural diet stage of “rouging and drinking blood” into the conscious and conscious modulation of drinking ?