题目内容
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[主观题]
Personal computers may cause people to become isolated from one another since work can bePersonal computers may cause people to become isolated from one another since work can be done at home alone.
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According to this passage, ______.
A．the market for multimedia computers has become saturated
B．most mainframes have been transformed into personal computers
C．most personal computers have become much more powerful than mainframes
D．the low costs of microprocessors have been achieved thanks to the high-volume production
