在窗体上画一个命令按钮，然后编写下列程序： Private Sub Command1 click( ) Dim a As Single，b As Single a=6:b=2 RC a，b Print a，b End Sub Sub RC(x As Single，y As Single) i=x x=i/y y=i Mod y End Sub

A．4 3

B．1 1

C．3 0

D．2 6