设a=“Visual Basic”,下面使b=“Visual”的语句是( )A. b=Left(a,8,12)B. b=Mid(a,8,5)C. b=Rigth(a,6)D. b=Left(a,6)

设a=“Visual Basic”,下面使b=“Visual”的语句是( )

A. b=Left(a,8,12)

B. b=Mid(a,8,5)

C. b=Rigth(a,6)

D. b=Left(a,6)


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