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 from what we can observe of preindustrial 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.
使用appreciate的四点习惯
become的用法
appear, look, seem的用法特点
及物动词do的22种不表示“做”的用法(下)
什么叫谓语动词与非谓语动词
英语动词有五种基本形式
feel like用法详解
burn的用法与语法
几组有关动词的基本概念
可以说look at books吗
短语动词的四种类型
动词allow的四个有用搭配
动词arrange的三组正误用法
英语动词的分类及基本形式
look, sound, smell, taste, feel的用法特点
英语连系动词用法要览
英语的短语动词与动词短语有何区别
advise后接动词用法规律
动词accompany三组正误句型
动词agree的短语与搭配
seem to be中的to be何时可以省略
什么叫及物动词与不及物动词
forgive, excuse, pardon用法比较
forbid后接动词的用法规律
及物动词do的22种不表示“做”的用法(上)
英语连系动词的分类
动词admit用法说明
常用短语动词用法归纳(01)
什么叫实义动词与非实义动词
什么叫动态动词与静态动词
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