单项选择题

What can be preceded according to the passage

A．The evolution of speech in the long run.
B．The time when early man mastered language.
C．Description about the Ice-Age climate.
D．Other factors functioned in the evolution of human brains.

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单项选择题

The author in the passage uses the following devices in his writing EXCEPT ______.

A．questions
B．narrative
C．analogy
D．comment

单项选择题

What kind of people had the advantages among ancient ancestors

A．Those who could weave with threads.
B．Those who possessed the highest level of language.
C．Those who were creative in tool-making.
D．Those who could play magic.