Plants and Mankind
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 10,000years 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.
A. Right B. Wrong C. Not mentioned
A. Right B. Wrong C. Not mentioned
A. Right B. Wrong C. Not mentioned
A. Right B. Wrong C. Not mentioned
A. Right B. Wrong C. Not mentioned
A. Right B. Wrong C. Not mentioned
A. Right B. Wrong C. Not mentioned
雅思人物描述英文词汇
雅思词汇:废物时间法
你绝对想不到怎么说的单词们
雅思词汇轻松攻克攻略
必背的雅思写作段落
雅思词汇:考试中出现概率较高的地名
雅思:高效记忆单词方法列举
雅思词汇:甲流(Swine Flu)词汇大集合
雅思词汇常用词根 vac-,van-, uoid-
快乐,学习雅思词汇
雅思词汇背诵:“一边臭美 一边学英文”
两会词汇:中国国家机关英文名称一览
总结:雅思考试听力常见地名
雅思写作常用分类词汇:教育
雅思词汇量与词汇扩展:词汇突破
雅思考试用到的资讯词汇和术语
中英文对照:护肤专业术语
雅思听力词汇攻破---图书馆场景
雅思常用写作分类词汇:环保类
雅思词汇背诵之“一边臭美 一边学英文”
突破雅思听力;场景词汇
雅思词汇的10个误解
按场景分类识记忆雅思听力词汇
通过AWL巧妙提高雅思词汇量
按场景分类识记雅思听力词汇
用艾宾浩斯记忆曲线快速记忆雅思词汇
雅思写作常用话题词汇:工作
雅思阅读考试真题词汇收集——考拉
雅思词汇:国家名称
雅思词汇短信突破绝招
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |