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  3. Which of the following is true of the environments in which fossils are found? In which of the following does the author presen

Which of the following is true of the environments in which fossils are found? In which of the following does the author presen

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问题 Which of the following is true of the environments in which fossils are found?
In which of the following does the author present the passage?
选项 A、An argument against a popular concept.
B、An explanation of a specific topic.
C、A description of a phenomenon.
D、An account of something happening.
答案B
解析 篇章结构题。文章开篇就提出本文主题——化石，接下来指出有利于化石形成的环境应该具备两个条件，然后具体介绍几种有利于化石形成和保存的环境，可见本文的篇章结构是提出主题，并围绕主题展开进行说明，故"对一特定主题的解释"正确。
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