单项选择题

The speaker states that the Stone Age was so named because ______.

A．it was very durable
B．the tools and weapons were made of stone
C．there was little vegetation
D．the people lived in caves
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单项选择题
Which of the following developments is NOT related to the condition of the Ice Age
A．Farming.
B．Clothing.
C．Living indoors.
D．Using fire.
单项选择题
Which of the following periods saw people develop a more communal form of living
A．Paleolithic.
B．Ice Age.
C．Mesolithic.
D．Neolithic.
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