VB中可不可以把函数当做另一个函数的形参来传递

   如题，下面我给出一个样本，请各位不吝赐教

 Private Function n1(ByVal s1 As Double) As Double
        Return s1
    End Function
    Private Function n2(ByVal s2 As Double) As Double
        Return s2 * s2
    End Function
    Private Function n3(ByVal s2 As Double) As Double
        Return s2 * s2 * s2
    End Function
rivate Function GetMK(ByVal a As Double, ByVal b As Double, ByVal k As Integer) As Double
        Dim x As Double, y As Double, h As Double
        Dim n As Long, j As Long
        x = 0 : y = 0 : h = 0
        n = 1 : j = 0
        For j = 0 To k Step 1
            n = n * 2
        Next
        h = (b - a) / n
        x = a + h / 2
        For j = 0 To n Step 1
            y = y + n1(x)//这里的函数不是特定，可以通过GetMK（........）里的参数，这里的参数可不可以是上面的函数，如果可以请帮我改进一下程序，谢谢各位啦
            x = x + h
        Next
        Return (h * y)
    End Function
在上述的红色字体是函数，
怎样用统一的函数来实现积分目的，