设a="Microsoft Visual Basic",则以下使变量b的值为Visual Basic的语句是A.b=LeR(a,10)B.b=Mid(a,10)C.b=Right(a,10)D.b=Mid(a,11,10)

设a="Microsoft Visual Basic",则以下使变量b的值为Visual Basic的语句是

A.b=LeR(a,10)

B.b=Mid(a,10)

C.b=Right(a,10)

D.b=Mid(a,11,10)


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