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  3. Plants and Mankind Botany, the study of plants, occupies a peculiar position in the history of human knowledge. We don’t kno

Plants and Mankind Botany, the study of plants, occupies a peculiar position in the history of human knowledge. We don’t kno

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问题                                        Plants and Mankind
    Botany, the study of plants, occupies a peculiar position in the history of human knowledge. We don’t know 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. 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 many other purposes. Tribes living today in the jungle of the Amazon recognize hundreds of plants and know many properties of each. To them botany 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.
   botany植物学
   marvel令人惊奇的事(人)，奇迹
选项 A、Right
B、Wrong
C、Not mentioned
答案A
解析 问题句说“‘关于植物及其特征的详细知识一定由来已久’这种说法是合乎逻辑的。”利用“detailed learning of plants and their properties(关于植物及其特征的洋细知识)”作为答案线索短语，于是在文章第1段第2句话中发现含有该短语的句子。而在接下来的一句中发现“合乎逻辑的”这个问题句中的关键词。对比问题句和答案相关句，我们发现问题句是一个句子，而原文采用了2个句子。比较它们语意上的差异：原文中代词“This”回指上一句话中的陈述，即指代“关于植物及其特征的详细知识一定由来已久”。可见原文的说法与问题句的说法一致。所以该题是考察代词this的指代关系。
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