托福TPO 7 听力Conversation第1篇第4题_Why does the professor talk about speciation?

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题目

Why does the professor talk about speciation?

To describe the main focus of the work she needs help with

To tell the man about a new research area in ethnology

To explain what Dean Adams chose to work on in Indonesia

To demonstrate how varied Dean Adams' research has been

题目解析

教授在提出 speciation 之前说道 Dean Adams did a lot of field research in Indonesia，并强调 she is really versatile，之后又提出 speciation 作为例子来说明 Dean Adams 的研究范围之广，所以选项 D 说法正确。

答案: D

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