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

What can be preceded according to the passage

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

单项选择题

What does the second it in It cheapens it (Line 7, Para.3) represent

A．Channel One
B．Advertising minutes
C．Shoes of Reebok
D．Educational process