单项选择题

31（）

A．friends
B．partners
C．competitors
D．leaders

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单项选择题
How did Craig Venter defend his company’s behavior
A．He was collecting information to sell to scientists
B．The pace of genetic research became very slow because of competition
C．The information collected by him would be given to government free of charge.
单项选择题
______has to be assessed in the third market place
A．Package certificate
B．Package price
C．Package colour
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