www狠狠干-www日本免费-www三级-www色在线-亚洲午夜网站-亚洲午夜小视频

2023考研閱讀資料經典美文32

雕龍文庫 分享 時間: 收藏本文

2023考研閱讀資料經典美文32

  32 Botany

  Botany, the study of plants, occupies a peculiar position in the history of human knowledge. For many thousands of years it was the one field of awareness about which humans had anything more than the vaguest of insights. It is impossible to know today just what our Stone Age ancestors knew about plants, but form what we can observe of pre-industrial societies that still exist a detailed learning of plants and their properties must be extremely ancient. This is logical. Plants are the basis of the food pyramid for all living things even for other plants. They have always been enormously important to the welfare of people not only for food, but also for clothing, weapons, tools, dyes, medicines, shelter, and a great many other purposes. Tribes living today in the jungles of the Amazon recognize literally hundreds of plants and know many properties of each. To them, botany, as such, has no name and is probably not even recognized as a special branch of knowledge at all.

  Unfortunately, the more industrialized we become the farther away we move from direct contact with plants, and the less distinct our knowledge of botany grows. Yet everyone comes unconsciously on an amazing amount of botanical knowledge, and few people will fail to recognize a rose, an apple, or an orchid. When our Neolithic ancestors, living in the Middle East about 10,000 years ago, discovered that certain grasses could be harvested and their seeds planted for richer yields the next season the first great step in a new association of plants and humans was taken. Grains were discovered and from them flowed the marvel of agriculture: cultivated crops. From then on, humans would increasingly take their living from the controlled production of a few plants, rather than getting a little here and a little there from many varieties that grew wild- and the accumulated knowledge of tens of thousands of years of experience and intimacy with plants in the wild would begin to fade away.

  

  32 Botany

  Botany, the study of plants, occupies a peculiar position in the history of human knowledge. For many thousands of years it was the one field of awareness about which humans had anything more than the vaguest of insights. It is impossible to know today just what our Stone Age ancestors knew about plants, but form what we can observe of pre-industrial societies that still exist a detailed learning of plants and their properties must be extremely ancient. This is logical. Plants are the basis of the food pyramid for all living things even for other plants. They have always been enormously important to the welfare of people not only for food, but also for clothing, weapons, tools, dyes, medicines, shelter, and a great many other purposes. Tribes living today in the jungles of the Amazon recognize literally hundreds of plants and know many properties of each. To them, botany, as such, has no name and is probably not even recognized as a special branch of knowledge at all.

  Unfortunately, the more industrialized we become the farther away we move from direct contact with plants, and the less distinct our knowledge of botany grows. Yet everyone comes unconsciously on an amazing amount of botanical knowledge, and few people will fail to recognize a rose, an apple, or an orchid. When our Neolithic ancestors, living in the Middle East about 10,000 years ago, discovered that certain grasses could be harvested and their seeds planted for richer yields the next season the first great step in a new association of plants and humans was taken. Grains were discovered and from them flowed the marvel of agriculture: cultivated crops. From then on, humans would increasingly take their living from the controlled production of a few plants, rather than getting a little here and a little there from many varieties that grew wild- and the accumulated knowledge of tens of thousands of years of experience and intimacy with plants in the wild would begin to fade away.

  

主站蜘蛛池模板: 国产色a在线观看 | 成人高清在线视频 | 成人日批视频 | 夜夜艹天天干 | 中文精品久久久久中文 | 天堂中文字幕 | 91视频成人 | 日本人甡交全过程 | 成人免费动漫在线看网站 | 婷婷97狠狠的狠狠的爱 | 全免费a级毛片免费毛视频 全免费毛片在线播放 | 120秒免费看| 欧美色片在线观看 | 奇米777狠狠色噜噜狠狠狠 | 区二区三区四区免费视频 | 欧美成人一区二区三区不卡视频 | 在线国产欧美 | 在线一区三区四区产品动漫 | yy午夜私人影院免费 | 国产一级黄 | 日韩欧美色视频在线观看 | 人人擦 | 好男人www社区视频在线 | 99手机在线视频 | 午夜一区二区三区 | 亚洲h在线观看 | 欧美日韩亚洲第一页 | 伊人五月 | 亚洲黄色网址大全 | 15yc宅男影院在线观看 | 一级做a爱片在线播放 | 国产 日韩 欧美 综合 | 免费黄色网战 | 国产在线观看一区二区三区四区 | 欧美99| 韩国伦理剧在线播放 | 韩日在线视频 | 欧美性精品hd在线观看 | 欧美日韩中文字幕一区二区高清 | 亚洲欧美在线一区二区 | 夜夜天天 |