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  3. Botany, the study of plants, occupies a peculiar position in the history of

Botany, the study of plants, occupies a peculiar position in the history of

游客2025-03-27  15
问题     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 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 peoples, 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 get 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. [br] What does the comment" this is logical "in line 5 mean?
选项 A、There is no clear way to determine the extent of our ancestor’s knowledge of plants.
B、It is not surprising that early humans had a detailed knowledge of plants.
C、It is reasonable to assume that our ancestors behaved very much like people in pre-industrial societies.
D、Human knowledge of plants is well organized and very detaile
答案 B
解析 联系上下文，寻找该代词先行词，this指前面的一句话：“人们对于植物及其属性情况的了解很早就开始了”是合乎逻辑的，故正确答案是B。
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