www.oingaieng.cn-国产成人精品免费视频大全,中文字幕无码不卡免费视频 ,777精品久无码人妻蜜桃,国产一级A毛久久久久一级A看免费视频

    考研英語(yǔ)作文:Botany

    時(shí)間:2022-08-08 20:26:25 英語(yǔ)作文 我要投稿

    考研英語(yǔ)作文:Botany

      在平日的學(xué)習(xí)、工作和生活里,大家都跟作文打過(guò)交道吧,作文是人們以書(shū)面形式表情達(dá)意的`言語(yǔ)活動(dòng)。那么一般作文是怎么寫(xiě)的呢?以下是小編整理的考研英語(yǔ)作文:Botany,歡迎大家分享。

    考研英語(yǔ)作文: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 eist a detailed learning of plants and their properties must be etremely 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 net 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 eperience and intimacy with plants in the wild would begin to fade away.

    【考研英語(yǔ)作文:Botany】相關(guān)文章:

    英語(yǔ)作文:植物學(xué)Botany11-10

    考研英語(yǔ)作文06-15

    英語(yǔ)考研作文02-15

    考研英語(yǔ)作文08-24

    考研英語(yǔ)作文06-15

    Statistics考研英語(yǔ)作文-英語(yǔ)作文09-30

    考研英語(yǔ)作文:OnWisdom08-05

    考研英語(yǔ)作文:Archaeology08-05

    考研英語(yǔ)作文模板07-20

    2014考研英語(yǔ)作文04-27

    2022天天躁日日躁狠狠躁| 不卡精品国产| 国产又粗又猛又黄又爽无遮挡| JRS直播无插件低调看直播NBA| 国内精品久久久久精品一区二区| 国产成人无码精品久| 日本乱人伧片中文二区| 少妇又紧又色又爽又刺激视频| 久久久久久国产精品免费无码| 八戒影院午夜无码国产|