2. 外语
  3. According to the author, the greatest mistake of our forefathers was that ______. It can be inferred from the third paragraph t

According to the author, the greatest mistake of our forefathers was that ______. It can be inferred from the third paragraph t

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问题 According to the author, the greatest mistake of our forefathers was that ______.
It can be inferred from the third paragraph that earlier generation didn’t realize ______.
选项 A、the importance of the proper use of land
B、the interdependence of water, soil, and living things
C、the value of the beauty of nature
D、the harmfulness of soil destruction and river floods
答案B
解析 由第二段第四句We need to know why all watersheds need the protection of plant life and why the running current of streams and rivers must be made to yield their full benefit to the soil...可知，水、土壤和生物是相互依赖的，而这正是我们在改正前人的错误做法基础上需要做的事情，这说明以前的人没意识到这一点，故B正确。该段主要讲了水、土壤和生物之间的相互依赖关系，A和D都是第二段的内容，与题干不符，C在文中未及提。
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