What is the most important service of trees to man according to the passage? What does the author tell us in this passage?

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问题 What is the most important service of trees to man according to the passage?
What does the author tell us in this passage?

选项 A、How trees help prevent droughts and floods.
B、The relationship between trees and man.
C、How an empire fell to pieces in an ancient times.
D、A story of trees.

答案A

解析 推断题。答案B、C和D文章都没有具体讲到,作者在整篇文章所反复提及的只是树木阻止旱灾和水灾的功能。因此,正确答案为A。
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