单项选择题

A．To compete for customers.
B．To reduce the size of their staff.
C．To provide services for distant clients.
D．To expand their operations at a lower cost.
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单项选择题
A．To learn how to prevent a bone disease.B．To understand differences between bone tissue and other tissue.C．To find out how specialized bone cells have evolved.D．To create artificial bone tissue.
A．To learn how to prevent a bone disease.
B．To understand differences between bone tissue and other tissue.
C．To find out how specialized bone cells have evolved.
D．To create artificial bone tissue.
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 change people’’s behaviour in social life.D．To find out how shy people are.
A．To observe people’’s attitude towards strangers.
B．To see how people get along with their friends.
C．To change people’’s behaviour in social life.
D．To find out how shy people are.
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