单项选择题

This article is about ______.

A．time sense in animals
B．how man's time sense separates him from animals
C．man's preoccupation with past and future events
D．how apes understand time relationships

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单项选择题

The social and cultural background can affect ______.

A．the interaction among people involved in the decision
B．the cultural framework
C．the traditional life-time employment
D．the social and cultural restrictions

单项选择题

Groups of experts often come up with ______.

A．better solutions than individuals
B．worse solutions than individuals
C．no solution at all
D．a lot of solutions