单项选择题

A．A bank.
B．A hospital.
C．A school.
D．A company.
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单项选择题
A．By copying each other’s technology.B．By incorporating features that make their products distinctive.C．By making their computers more expensive.D．By making their computers run much faster.
A．By copying each other’s technology.
B．By incorporating features that make their products distinctive.
C．By making their computers more expensive.
D．By making their computers run much faster.
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