They run about and hunt for food．,They collect but do n-找考题网

单项选择题

A．They run about and hunt for food.
B．They collect but do not produce their own food.
C．They do not rely on clear division of labor.
D．They lead a completely agricultural way of life.

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单项选择题

A．At the airport.B．At the travel agency.C．In the student center.D．In a restaurant.

A．At the airport.
B．At the travel agency.
C．In the student center.
D．In a restaurant.

单项选择题

A．College professors.B．Computer users.C．Lonely people.D．Internet surfers.

A．College professors.
B．Computer users.
C．Lonely people.
D．Internet surfers.

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