A.MsgBox B.Open C.Output D.InputBox
A.b=Left(a,8,12) B.b=Mid(a,8,5) C.b=Right(a,5,5) D.b=Left(a,8,5)
A.整數(shù) B.大于0的整數(shù) C.等于0的整數(shù) D.小于0的數(shù)