QUERY_STRING为什么会重复？解决方案 _ASP

QUERY_STRING为什么会重复？
以下为调用http://localhost网址生成的静态网页代码。传递了&html=1&root=0
1句QUERY_STRING会重复html=1&root=0显示为html=1&root=0?html=1&root=0，不属正常，寻原因。
2句QuERY_String显示一次html=1&root=0属正常
为什么http://localhost没有/的时候，会重复？请高手赐教。
以下首页内容index.asp

<%GetHTML%>
getHTML内部执行了Response.Write Request.ServerVariables("QUERY_STRING")用来显示QUERY_STRING的值。
以下静态调用页面makehtml.asp
<%
call makeindex("http://localhost","")-------此为1句，只1斜杆区别
call makeindex("http://localhost/","")------此为2句，只1斜杆区别

Public Sub MakeIndex(domain,lng)
    Dim FS, FSO
    Set FS = server.CreateObject("Scripting.FileSystemObject")
    Set FSO = FS.CreateTextFile(Server.MapPath("../") & "/Index.Html", True)
    FSO.Write GetHTML(domain, 0, lng)
    Response.Write "<div class=""process"">Index.html</div>"
    FSO.Close
    Set FSO = Nothing
    Set FS = Nothing
End Sub

Public Function GetHTML(url, root, lng)
    Dim ObjXML, Unicode
    If InStr(url, "?") > 0 Then url = url & "&html=1&root=" & root Else url = url & "?html=1&root=" & root
response.write url &" call<br>"
    Set ObjXML =Server.CreateObject("MSXML2.XMLHTTP")
    With ObjXML
        .Open "GET", url, False
        .send
        If .readyState = 4 And .Status = 200 Then
            GetHTML = BytesToBstr(.responseBody, Unicode)
        Else
            GetHTML = Err.Description
        End If
    End With
    Set ObjXML = Nothing
End Function

Private Function BytesToBstr(StrBody, Unicode)
    Dim ObjStream
    Set ObjStream = server.CreateObject("ADODB.Stream")
    With ObjStream
        .Type = 1
        .Mode = 3
        .Open
            .Write StrBody
            .Position = 0
            .Type = 2
            .Charset = "gbk"
            BytesToBstr = .ReadText
        .Close
    End With
    Set ObjStream = Nothing
End Function

%>

------解决方案--------------------