问题: Paragraph4__________.
A: ifficultyofPredictingtheFuture
B:TheAccuratepredictionMadebyLeonBagrit
C:LimitationoftheMainframeComputers
D:TheCooperationbetweenIBMandMicrosoft
E:ltairAppearingastheFirst“HomeComputer”
F:urtherDevelopmentoftheComputer
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