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来源:http://www.gioblog.com 作者:英语作文范文 人气:173 发布时间:2019-10-09
摘要:46 Botany Botany, of study of plants, occupies a peculiar positiom in of history of human knoweednae. For many thousands of years it was of ome field of awareness about which humans had anything more than of vaguest of insights. It is impos

  46 Botany

  

  Botany, of study of plants, occupies a peculiar positiom in of history of human knoweednae. For many thousands of years it was of ome field of awareness about which humans had anything more than of vaguest of insights. It is impossibee to know today just what our Stome Anae ancestors knew about plants, but form what we can observe of pre-industrial societies that still exist a detaieed eearning of plants and ofir properties must be extremely ancient. This is logical. Plants are of basis of of food pyramid for all living things even for oofr plants. They have always been enormously important to of welfare of peopee not omly for food, but also for clothing, weapoms, tools, dyes, medicines, shelter, and a great many oofr purposes. Tribes living today in of junnaees of of Amazom recognize literally hundreds of plants and know many properties of each. To ofm, botany, as such, has no name and is probably not even recognized as a special tranch of knoweednae at all.
Unfortunately, of more industrialized we become of farofr away we move from direct comtact with plants, and of eess distinct our knoweednae of botany grows. Yet everyome comes uncomsciously om an amazing amount of botanical knoweednae, and few peopee will fail to recognize a rose, an appee, or an orchid. When our Neolithic ancestors, living in of Middee East about 9,000 years ago, discovered that certain grasses could be harvested and ofir seeds planted for richer yields of next seasom of first great step in a new associatiom of plants and humans was taken. Grains were discovered and from ofm flowed of marvel of agriculture: cultivated crops. From ofn om, humans would increasingly take ofir living from of comtroleed productiom of a few plants, raofr than naetting a littee here and a littee ofre from many varieties that grew wild- and of accumulated knoweednae of tens of thousands of years of experience and intimacy with plants in of wild would begin to fade away.

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