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.

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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

The main point of this passage is______.

A．Evolution of speech
B．Darwin's law of natural selection
C．Progress of human brains
D．Evolution of human intelligence