已知$f\left(x\right)$是定义在$R$上的奇函数，满足$f\left(-\frac{3}{2}+x\right)=f\left(\frac{3}{2}+x\right)$,当$x\in \left(0,\frac{3}{2}\right)$时,$f\left(x\right)=\ln \left(x^2-x+1\right)$，则函数$f\left(x\right)$在区间$0,6$上的零点个数是（  ）

实现上述功能的VB程序如下，但横线处代码有错，请改正。

Private Sub Command1_Click()

    Dim a As String

    Dim x As Integer, s As Integer, k As Integer

    a = Text1.Text

    x = 1: s = 0: k = 0

    For i = 1 To Len(a)

        '如果输入的不是0到9的数字或者空格，则给出错误提示后结束子程序

        If (Asc(Mid(a, i, 1)) < 48 Or Asc(Mid(a, i,1)) > 57)  or(Asc(Mid(a,i,1))= 32)  then’____Label1.Caption = "只能输入数字或空格"

            Exit Sub

        End If

        If Mid(a, i, 1) = " " Then

            s = s + Mid(a,x,i)’____

            x = i + 1

            k = k + 1

        End If

    Next i

    Label1.Caption = "这" + Str(k) + "个数的和为:" + Str(s)

End Sub