单项选择题

The ultimate goal in developing technology is for people to______.

A．get practical skills and arts
B．obtain greater amounts of energy
C．effect social changes
D．create new cultures
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单项选择题
The author points out that differences in people's ways of life come from______.
A．their cultural traditions
B．their adaptions to the environment
C．their demands for natural resources
D．their notions about the environment
单项选择题
Social organizations and technology develop as a result of people's______.
A．adaptation to the environment
B．attempt to change nature
C．efforts to create peaceful societies
D．desire to create bigger societies
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