单项选择题

A．To observe people’s attitude towards strangers.
B．To see how people get along with their friends.
C．To test people’s behavior in social life.
D．To find out how shy people are.
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单项选择题
A．He is a computer supplier.B．He is a computer designer.C．He is a computer repairman.D．He is a computer technician.
A．He is a computer supplier.
B．He is a computer designer.
C．He is a computer repairman.
D．He is a computer technician.
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