单击窗体时,下列程序的执行结果是( )。Private Sub Invert(By Val xstr As String,ystr As String)Dim tempstr AS StringDim I AS IntegerI=Len(xstr)Do While I>=1tempstr=tempstr + Mid(xstr,I,1)I=I - 1LoopyStr=tempStrEnd SubPrivate Sub Form_Click( )Dim s1 As String,s2 As StringS1= abcdef Invert S1,S2Print S2End Sub
A.blooean isAlive( )
B.Thread currentThread( )
C.String getName( )
D.smtic boolean interrupted( )