单选题：he author provides information that would answer which of th

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题目内容：
he author provides information that would answer which of the following questions?
I. What eventually'led to the extinction of the robust proto-humans?
II. What were the causes of the desiccation of the African landscape?
III. What caused the initial spurt in Homo's brain growth?

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It can be inferred that the author's views the superficial a

It can be inferred that the author's views the superficial appropriation of the

分类：GRE  题型：单选题
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ANNOTATE : COMMENTARY ::

ANNOTATE : COMMENTARY ::

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Which of the following is the most appropriate title for the

Which of the following is the most appropriate title for the passage?

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Despite the __________, Alzheimer' s researchers are still _

Despite the __________, Alzheimer' s researchers are still __________ about the

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