diff --git a/.vs/Clone2/v16/.suo b/.vs/Clone2/v16/.suo
new file mode 100644
index 0000000000000000000000000000000000000000..e98879cd3817dcb4d377e289ccbd69e339c93d4c
Binary files /dev/null and b/.vs/Clone2/v16/.suo differ
diff --git a/.vs/Clone3/v16/.suo b/.vs/Clone3/v16/.suo
new file mode 100644
index 0000000000000000000000000000000000000000..4027ad807b8f87536bd962143d0ab48a0cdd27f7
Binary files /dev/null and b/.vs/Clone3/v16/.suo differ
diff --git a/.vs/ProjectSettings.json b/.vs/ProjectSettings.json
new file mode 100644
index 0000000000000000000000000000000000000000..f8b4888565caadc7510be75682268d6c18edd6de
--- /dev/null
+++ b/.vs/ProjectSettings.json
@@ -0,0 +1,3 @@
+{
+  "CurrentProjectSetting": null
+}
\ No newline at end of file
diff --git a/.vs/VSWorkspaceState.json b/.vs/VSWorkspaceState.json
new file mode 100644
index 0000000000000000000000000000000000000000..f9b6d230103adf2d9f4c4d0581198daa738f69b1
--- /dev/null
+++ b/.vs/VSWorkspaceState.json
@@ -0,0 +1,8 @@
+{
+  "ExpandedNodes": [
+    "",
+    "\\FourOperations"
+  ],
+  "SelectedNode": "\\FourOperations\\FourOperations.sln",
+  "PreviewInSolutionExplorer": false
+}
\ No newline at end of file
diff --git a/.vs/slnx.sqlite b/.vs/slnx.sqlite
new file mode 100644
index 0000000000000000000000000000000000000000..3f4d6e8f40c1e8cd3673138bbcc2a1b4efa8aa8f
Binary files /dev/null and b/.vs/slnx.sqlite differ
diff --git a/FourOperations/.vs/FourOperations/DesignTimeBuild/.dtbcache.v2 b/FourOperations/.vs/FourOperations/DesignTimeBuild/.dtbcache.v2
index 72291688dc717b5669380f1aa14ae6d11ccad604..ab552a0eb55269e37f77dbc4461f7217595a2cbe 100644
Binary files a/FourOperations/.vs/FourOperations/DesignTimeBuild/.dtbcache.v2 and b/FourOperations/.vs/FourOperations/DesignTimeBuild/.dtbcache.v2 differ
diff --git a/FourOperations/.vs/FourOperations/v16/.suo b/FourOperations/.vs/FourOperations/v16/.suo
index cb32bfe39d0b011b8f084b888994989db02168f1..adccffbab8bc16ddd429ef025a9bd175954fa22c 100644
Binary files a/FourOperations/.vs/FourOperations/v16/.suo and b/FourOperations/.vs/FourOperations/v16/.suo differ
diff --git a/FourOperations/FourOperations/BaseData/BasicData.cs b/FourOperations/FourOperations/BaseData/BasicData.cs
index b50b02c6cb9109a315b19ec67215eeb222fecb73..2cd821cb7f0b158a873a2f77ccc8f51a6bafc2b7 100644
--- a/FourOperations/FourOperations/BaseData/BasicData.cs
+++ b/FourOperations/FourOperations/BaseData/BasicData.cs
@@ -1,4 +1,6 @@
-namespace ConsoleApp2
+using System.Collections.Generic;
+
+namespace ConsoleApp2
 {
     public abstract  class BasicData : IBasicData
     {
@@ -11,6 +13,10 @@
         protected readonly string[] ArrayTheme = new string[10];//题目集合
         protected readonly string[] ArrayAnswer = new string[10];//答案集合
 
+        //读取xml 文本 的题目和答案
+        protected List<string> vsArrayTheme = new List<string>();
+        protected List<string> vsArrayAnswer = new List<string>();
+
         public abstract void RandomNumber();
 
         public abstract void AddThemeCount();
@@ -20,5 +26,6 @@
         public abstract void AddTheme();
 
         public abstract void SubTheme();
+        public abstract void RandomNumber();
     }
 }
diff --git a/FourOperations/FourOperations/BaseData/IBasicData.cs b/FourOperations/FourOperations/BaseData/IBasicData.cs
index 39069f921acb979ac5f86b5df5e4fc190a0662e7..94c5d671c5ddffe2563c47e505e0591880e59f6c 100644
--- a/FourOperations/FourOperations/BaseData/IBasicData.cs
+++ b/FourOperations/FourOperations/BaseData/IBasicData.cs
@@ -2,7 +2,7 @@
 
 namespace ConsoleApp2
 {
-    public interface IBasicData
+     interface IBasicData
     {
          int BasicDataA { get; }
          int BasicDataB { get; }
diff --git a/FourOperations/FourOperations/ClassTheme/OneTheme.cs b/FourOperations/FourOperations/ClassTheme/OneTheme.cs
index c42a4e02f29a73552ba85f768053180e01785545..21917c9eccaf9c28808b430fcd20f7e441e85b6e 100644
--- a/FourOperations/FourOperations/ClassTheme/OneTheme.cs
+++ b/FourOperations/FourOperations/ClassTheme/OneTheme.cs
@@ -1,11 +1,14 @@
 using System;
+using System.Collections.Generic;
 using System.IO;
+using System.Security.Cryptography;
 using System.Xml;
 
 namespace ConsoleApp2.Base
 {
     public class OneTheme : BasicData
     {
+        
         private readonly Random random = new Random();
         /// <summary>
         /// 一年级出题范围：20以内加减
@@ -115,14 +118,14 @@ namespace ConsoleApp2.Base
         /// <summary>
         /// 用来装10道题目Data
         /// </summary>
-        /// <param name="Array1"></param>
-        /// <param name="Array2"></param>
+        /// <param name="ShowTheme"></param>
+        /// <param name="ShowAnswer"></param>
         /// <param name="i"></param>
         /// <param name="oneTheme"></param>的数据
-        private void ArrayDate(string[] Array1, string[] Array2, int i, OneTheme oneTheme)
+        private void ArrayDate(string[] ShowTheme, string[] ShowAnswer, int i, OneTheme oneTheme)
         {
-            Array1[i] = oneTheme.Theme;
-            Array2[i] = oneTheme.Answer.ToString();
+            ShowTheme[i] = oneTheme.Theme;
+            ShowAnswer[i] = oneTheme.Answer.ToString();
             ArrayTheme[i] = oneTheme.Theme;
             ArrayAnswer[i] = oneTheme.Answer.ToString();
         }
@@ -137,7 +140,7 @@ namespace ConsoleApp2.Base
             for (int i = 0; i < Array1.Length; i++)
             {
                 Console.Write(Array1[i]);
-                Console.WriteLine("="+Array2[i]);
+                Console.WriteLine("=" + Array2[i]);
             }
         }
         /// <summary>
@@ -250,15 +253,65 @@ namespace ConsoleApp2.Base
             settings.Indent = true;
             using (XmlWriter writer = XmlWriter.Create("..\\..\\..\\" + fileName, settings))
             {
-                writer.WriteStartElement("生成题目");
+                writer.WriteStartElement("Create");
                 for (int i = 0; i < oneTheme.ArrayTheme.Length; i++)
                 {
-                    writer.WriteElementString("题目", ArrayTheme[i]);
-                    writer.WriteElementString("答案", ArrayAnswer[i]);
+                    writer.WriteElementString("Theme", ArrayTheme[i]);
+                    writer.WriteElementString("Answer", ArrayAnswer[i]);
                 }
                 writer.WriteEndElement();
             }
             Console.WriteLine("xml同步写入成功");
         }
+
+        /// <summary>
+        /// 读取加法XML文件
+        /// </summary>
+        public void AddReaderXML()
+        {
+            OneTheme oneTheme = new OneTheme();
+            using (XmlReader reader = XmlReader.Create("..\\..\\..\\打印文件Add.xml"))
+            {
+                while (!reader.EOF)
+                {
+                    if (reader.MoveToContent() == XmlNodeType.Element && reader.Name == "Theme")
+                    {
+                        vsArrayTheme.Add(reader.ReadElementContentAsString());
+                        if (reader.MoveToContent() == XmlNodeType.Element && reader.Name == "Answer")
+                        {
+                            vsArrayAnswer.Add(reader.ReadElementContentAsString());
+                        }
+                    }
+                    else
+                    {
+                        reader.Read();
+                    }
+                }
+            }
+        }
+        public void SubReaderXML()
+        {
+
+            OneTheme oneTheme = new OneTheme();
+            using (XmlReader reader = XmlReader.Create("..\\..\\..\\打印文件Sub.xml"))
+            {
+                while (!reader.EOF)
+                {
+                    if (reader.MoveToContent() == XmlNodeType.Element && reader.Name == "Theme")
+                    {
+                        vsArrayTheme.Add(reader.ReadElementContentAsString());
+                        if (reader.MoveToContent() == XmlNodeType.Element && reader.Name == "Answer")
+                        {
+                            vsArrayAnswer.Add(reader.ReadElementContentAsString());
+                        }
+                    }
+                    else
+                    {
+                        reader.Read();
+                    }
+                }
+            }
+        }
+
     }
 }
diff --git a/FourOperations/FourOperations/bin/Debug/netstandard2.0/FourOperations.deps.json b/FourOperations/FourOperations/bin/Debug/netstandard2.0/FourOperations.deps.json
index 8221fdbab925d6427141a0c519bd37b9d6d18c70..66ac6c6daf881d7530abd9c22a9b0faf5b9f345e 100644
--- a/FourOperations/FourOperations/bin/Debug/netstandard2.0/FourOperations.deps.json
+++ b/FourOperations/FourOperations/bin/Debug/netstandard2.0/FourOperations.deps.json
@@ -32,7 +32,7 @@
     "Microsoft.NETCore.Platforms/1.1.0": {
       "type": "package",
       "serviceable": true,
-      "sha512": "sha512-kz0PEW2lhqygehI/d6XsPCQzD7ff7gUJaVGPVETX611eadGsA3A877GdSlU0LRVMCTH/+P3o2iDTak+S08V2+A==",
+      "sha512": "sha512-bLpT1f/SFlO1CzqXG12KnJzpZs6lv24uX2Rzi4Fmm0noJpNlnWRVryuO3yK18Ca04t/YHcO1e1Z0WDfjseqNzw==",
       "path": "microsoft.netcore.platforms/1.1.0",
       "hashPath": "microsoft.netcore.platforms.1.1.0.nupkg.sha512"
     },
diff --git a/FourOperations/FourOperations/bin/Debug/netstandard2.0/FourOperations.dll b/FourOperations/FourOperations/bin/Debug/netstandard2.0/FourOperations.dll
index 34c920ff647694a71f644f2f3a760670af676444..0c94708738af87ea72e84d147104de5f5caeb0ae 100644
Binary files a/FourOperations/FourOperations/bin/Debug/netstandard2.0/FourOperations.dll and b/FourOperations/FourOperations/bin/Debug/netstandard2.0/FourOperations.dll differ
diff --git a/FourOperations/FourOperations/bin/Debug/netstandard2.0/FourOperations.pdb b/FourOperations/FourOperations/bin/Debug/netstandard2.0/FourOperations.pdb
index aeae09db31a35d160742dc9c5f6b2bdb2f1be5ef..826c6e8d3e8bf620cfbcc0055b6f687cf1f8d6bb 100644
Binary files a/FourOperations/FourOperations/bin/Debug/netstandard2.0/FourOperations.pdb and b/FourOperations/FourOperations/bin/Debug/netstandard2.0/FourOperations.pdb differ
diff --git a/FourOperations/FourOperations/obj/Debug/netstandard2.0/FourOperations.assets.cache b/FourOperations/FourOperations/obj/Debug/netstandard2.0/FourOperations.assets.cache
index 649edb24b53d3a6c0f6e9f845fc7aa4280b1d21b..a4599fc6b8ea46eb97e6da9d0453aa442d407b7d 100644
Binary files a/FourOperations/FourOperations/obj/Debug/netstandard2.0/FourOperations.assets.cache and b/FourOperations/FourOperations/obj/Debug/netstandard2.0/FourOperations.assets.cache differ
diff --git a/FourOperations/FourOperations/obj/Debug/netstandard2.0/FourOperations.csproj.CoreCompileInputs.cache b/FourOperations/FourOperations/obj/Debug/netstandard2.0/FourOperations.csproj.CoreCompileInputs.cache
index 606fca0c694ce00a91b46aa4f6d289cd163d2870..3af1262a2614333c0a0a8d034dd5a2b74d4e522a 100644
--- a/FourOperations/FourOperations/obj/Debug/netstandard2.0/FourOperations.csproj.CoreCompileInputs.cache
+++ b/FourOperations/FourOperations/obj/Debug/netstandard2.0/FourOperations.csproj.CoreCompileInputs.cache
@@ -1 +1 @@
-ed214248b9a021af9fccfeb7fd5555d2f19d5c57
+b63707951b931a8a5f13ad933005e6e42b1a77eb
diff --git a/FourOperations/FourOperations/obj/Debug/netstandard2.0/FourOperations.csproj.FileListAbsolute.txt b/FourOperations/FourOperations/obj/Debug/netstandard2.0/FourOperations.csproj.FileListAbsolute.txt
index 76a9964ce292ce3f0eb53e3231ce543c1eef7c70..18d37539d731f6ab73bee4519392b446eb1c46a0 100644
--- a/FourOperations/FourOperations/obj/Debug/netstandard2.0/FourOperations.csproj.FileListAbsolute.txt
+++ b/FourOperations/FourOperations/obj/Debug/netstandard2.0/FourOperations.csproj.FileListAbsolute.txt
@@ -25,3 +25,12 @@ C:\Users\linso\Desktop\新建文件夹\FourOperations\FourOperations\FourOperati
 C:\Users\linso\Desktop\新建文件夹\FourOperations\FourOperations\FourOperations\obj\Debug\netstandard2.0\FourOperations.AssemblyInfo.cs
 C:\Users\linso\Desktop\新建文件夹\FourOperations\FourOperations\FourOperations\obj\Debug\netstandard2.0\FourOperations.dll
 C:\Users\linso\Desktop\新建文件夹\FourOperations\FourOperations\FourOperations\obj\Debug\netstandard2.0\FourOperations.pdb
+D:\Git\Clone3\FourOperations\FourOperations\bin\Debug\netstandard2.0\FourOperations.deps.json
+D:\Git\Clone3\FourOperations\FourOperations\bin\Debug\netstandard2.0\FourOperations.dll
+D:\Git\Clone3\FourOperations\FourOperations\bin\Debug\netstandard2.0\FourOperations.pdb
+D:\Git\Clone3\FourOperations\FourOperations\obj\Debug\netstandard2.0\FourOperations.csprojAssemblyReference.cache
+D:\Git\Clone3\FourOperations\FourOperations\obj\Debug\netstandard2.0\FourOperations.csproj.CoreCompileInputs.cache
+D:\Git\Clone3\FourOperations\FourOperations\obj\Debug\netstandard2.0\FourOperations.AssemblyInfoInputs.cache
+D:\Git\Clone3\FourOperations\FourOperations\obj\Debug\netstandard2.0\FourOperations.AssemblyInfo.cs
+D:\Git\Clone3\FourOperations\FourOperations\obj\Debug\netstandard2.0\FourOperations.dll
+D:\Git\Clone3\FourOperations\FourOperations\obj\Debug\netstandard2.0\FourOperations.pdb
diff --git a/FourOperations/FourOperations/obj/Debug/netstandard2.0/FourOperations.csprojAssemblyReference.cache b/FourOperations/FourOperations/obj/Debug/netstandard2.0/FourOperations.csprojAssemblyReference.cache
index 42afe85aa8032eb7b595ce49cb6f440156b1aa94..51a34edf640cee94ebfd3785e15fb14ed8c7f759 100644
Binary files a/FourOperations/FourOperations/obj/Debug/netstandard2.0/FourOperations.csprojAssemblyReference.cache and b/FourOperations/FourOperations/obj/Debug/netstandard2.0/FourOperations.csprojAssemblyReference.cache differ
diff --git a/FourOperations/FourOperations/obj/Debug/netstandard2.0/FourOperations.dll b/FourOperations/FourOperations/obj/Debug/netstandard2.0/FourOperations.dll
index 34c920ff647694a71f644f2f3a760670af676444..0c94708738af87ea72e84d147104de5f5caeb0ae 100644
Binary files a/FourOperations/FourOperations/obj/Debug/netstandard2.0/FourOperations.dll and b/FourOperations/FourOperations/obj/Debug/netstandard2.0/FourOperations.dll differ
diff --git a/FourOperations/FourOperations/obj/Debug/netstandard2.0/FourOperations.pdb b/FourOperations/FourOperations/obj/Debug/netstandard2.0/FourOperations.pdb
index aeae09db31a35d160742dc9c5f6b2bdb2f1be5ef..826c6e8d3e8bf620cfbcc0055b6f687cf1f8d6bb 100644
Binary files a/FourOperations/FourOperations/obj/Debug/netstandard2.0/FourOperations.pdb and b/FourOperations/FourOperations/obj/Debug/netstandard2.0/FourOperations.pdb differ
diff --git a/FourOperations/FourOperations/obj/FourOperations.csproj.nuget.dgspec.json b/FourOperations/FourOperations/obj/FourOperations.csproj.nuget.dgspec.json
index 8b62a4682f7fc95e9561137aba81b30a68c1b984..7a9990f012b64794aa04f2c5b9897a1ab5fb06fc 100644
--- a/FourOperations/FourOperations/obj/FourOperations.csproj.nuget.dgspec.json
+++ b/FourOperations/FourOperations/obj/FourOperations.csproj.nuget.dgspec.json
@@ -1,33 +1,30 @@
 {
   "format": 1,
   "restore": {
-    "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperations\\FourOperations.csproj": {}
+    "D:\\Git\\Clone3\\FourOperations\\FourOperations\\FourOperations.csproj": {}
   },
   "projects": {
-    "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperations\\FourOperations.csproj": {
+    "D:\\Git\\Clone3\\FourOperations\\FourOperations\\FourOperations.csproj": {
       "version": "1.0.0",
       "restore": {
-        "projectUniqueName": "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperations\\FourOperations.csproj",
+        "projectUniqueName": "D:\\Git\\Clone3\\FourOperations\\FourOperations\\FourOperations.csproj",
         "projectName": "FourOperations",
-        "projectPath": "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperations\\FourOperations.csproj",
-        "packagesPath": "C:\\Users\\linso\\.nuget\\packages\\",
-        "outputPath": "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperations\\obj\\",
+        "projectPath": "D:\\Git\\Clone3\\FourOperations\\FourOperations\\FourOperations.csproj",
+        "packagesPath": "C:\\Users\\Administrator\\.nuget\\packages\\",
+        "outputPath": "D:\\Git\\Clone3\\FourOperations\\FourOperations\\obj\\",
         "projectStyle": "PackageReference",
         "fallbackFolders": [
-          "C:\\Microsoft\\Xamarin\\NuGet\\",
           "C:\\Program Files\\dotnet\\sdk\\NuGetFallbackFolder"
         ],
         "configFilePaths": [
-          "C:\\Users\\linso\\AppData\\Roaming\\NuGet\\NuGet.Config",
-          "C:\\Program Files (x86)\\NuGet\\Config\\Microsoft.VisualStudio.Offline.config",
-          "C:\\Program Files (x86)\\NuGet\\Config\\Xamarin.Offline.config"
+          "C:\\Users\\Administrator\\AppData\\Roaming\\NuGet\\NuGet.Config",
+          "C:\\Program Files (x86)\\NuGet\\Config\\Microsoft.VisualStudio.Offline.config"
         ],
         "originalTargetFrameworks": [
           "netstandard2.0"
         ],
         "sources": {
-          "C:\\Program Files (x86)\\Microsoft SDKs\\NuGetPackages\\": {},
-          "https://api.nuget.org/v3/index.json": {}
+          "https://www.nuget.org/api/v2/": {}
         },
         "frameworks": {
           "netstandard2.0": {
diff --git a/FourOperations/FourOperations/obj/FourOperations.csproj.nuget.g.props b/FourOperations/FourOperations/obj/FourOperations.csproj.nuget.g.props
index a6c665ef69fd4e1484541861fdddecf05fba6c86..7ce75f8acd46a471e226006e9ca6b958d782628d 100644
--- a/FourOperations/FourOperations/obj/FourOperations.csproj.nuget.g.props
+++ b/FourOperations/FourOperations/obj/FourOperations.csproj.nuget.g.props
@@ -5,7 +5,7 @@
     <RestoreTool Condition=" '$(RestoreTool)' == '' ">NuGet</RestoreTool>
     <ProjectAssetsFile Condition=" '$(ProjectAssetsFile)' == '' ">$(MSBuildThisFileDirectory)project.assets.json</ProjectAssetsFile>
     <NuGetPackageRoot Condition=" '$(NuGetPackageRoot)' == '' ">$(UserProfile)\.nuget\packages\</NuGetPackageRoot>
-    <NuGetPackageFolders Condition=" '$(NuGetPackageFolders)' == '' ">C:\Users\linso\.nuget\packages\;C:\Microsoft\Xamarin\NuGet\;C:\Program Files\dotnet\sdk\NuGetFallbackFolder</NuGetPackageFolders>
+    <NuGetPackageFolders Condition=" '$(NuGetPackageFolders)' == '' ">C:\Users\Administrator\.nuget\packages\;C:\Program Files\dotnet\sdk\NuGetFallbackFolder</NuGetPackageFolders>
     <NuGetProjectStyle Condition=" '$(NuGetProjectStyle)' == '' ">PackageReference</NuGetProjectStyle>
     <NuGetToolVersion Condition=" '$(NuGetToolVersion)' == '' ">5.5.0</NuGetToolVersion>
   </PropertyGroup>
diff --git a/FourOperations/FourOperations/obj/Release/netstandard2.0/FourOperations.AssemblyInfo.cs b/FourOperations/FourOperations/obj/Release/netstandard2.0/FourOperations.AssemblyInfo.cs
new file mode 100644
index 0000000000000000000000000000000000000000..19f9d3dd88c0c700f8fa20030ca026fb98f21e92
--- /dev/null
+++ b/FourOperations/FourOperations/obj/Release/netstandard2.0/FourOperations.AssemblyInfo.cs
@@ -0,0 +1,23 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     此代码由工具生成。
+//     运行时版本:4.0.30319.42000
+//
+//     对此文件的更改可能会导致不正确的行为，并且如果
+//     重新生成代码，这些更改将会丢失。
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+using System;
+using System.Reflection;
+
+[assembly: System.Reflection.AssemblyCompanyAttribute("FourOperations")]
+[assembly: System.Reflection.AssemblyConfigurationAttribute("Release")]
+[assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
+[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0")]
+[assembly: System.Reflection.AssemblyProductAttribute("FourOperations")]
+[assembly: System.Reflection.AssemblyTitleAttribute("FourOperations")]
+[assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]
+
+// 由 MSBuild WriteCodeFragment 类生成。
+
diff --git a/FourOperations/FourOperations/obj/Release/netstandard2.0/FourOperations.AssemblyInfoInputs.cache b/FourOperations/FourOperations/obj/Release/netstandard2.0/FourOperations.AssemblyInfoInputs.cache
new file mode 100644
index 0000000000000000000000000000000000000000..d97597ffc6483f77f53ad379530f68840c465dc5
--- /dev/null
+++ b/FourOperations/FourOperations/obj/Release/netstandard2.0/FourOperations.AssemblyInfoInputs.cache
@@ -0,0 +1 @@
+aa63ce6cfa9603208edf265bd207e6dbee7d3740
diff --git a/FourOperations/FourOperations/obj/Release/netstandard2.0/FourOperations.assets.cache b/FourOperations/FourOperations/obj/Release/netstandard2.0/FourOperations.assets.cache
new file mode 100644
index 0000000000000000000000000000000000000000..f5bdcf2feea4ba43b6e1e7ce98caffc0ce467386
Binary files /dev/null and b/FourOperations/FourOperations/obj/Release/netstandard2.0/FourOperations.assets.cache differ
diff --git a/FourOperations/FourOperations/obj/project.assets.json b/FourOperations/FourOperations/obj/project.assets.json
index 0558f3667d913e8fa0b3e3ee8d81aab97d5f2e6e..3d514944c3ba5df001c65de2c9d929622f075937 100644
--- a/FourOperations/FourOperations/obj/project.assets.json
+++ b/FourOperations/FourOperations/obj/project.assets.json
@@ -30,7 +30,7 @@
   },
   "libraries": {
     "Microsoft.NETCore.Platforms/1.1.0": {
-      "sha512": "kz0PEW2lhqygehI/d6XsPCQzD7ff7gUJaVGPVETX611eadGsA3A877GdSlU0LRVMCTH/+P3o2iDTak+S08V2+A==",
+      "sha512": "bLpT1f/SFlO1CzqXG12KnJzpZs6lv24uX2Rzi4Fmm0noJpNlnWRVryuO3yK18Ca04t/YHcO1e1Z0WDfjseqNzw==",
       "type": "package",
       "path": "microsoft.netcore.platforms/1.1.0",
       "files": [
@@ -180,34 +180,30 @@
     ]
   },
   "packageFolders": {
-    "C:\\Users\\linso\\.nuget\\packages\\": {},
-    "C:\\Microsoft\\Xamarin\\NuGet\\": {},
+    "C:\\Users\\Administrator\\.nuget\\packages\\": {},
     "C:\\Program Files\\dotnet\\sdk\\NuGetFallbackFolder": {}
   },
   "project": {
     "version": "1.0.0",
     "restore": {
-      "projectUniqueName": "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperations\\FourOperations.csproj",
+      "projectUniqueName": "D:\\Git\\Clone3\\FourOperations\\FourOperations\\FourOperations.csproj",
       "projectName": "FourOperations",
-      "projectPath": "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperations\\FourOperations.csproj",
-      "packagesPath": "C:\\Users\\linso\\.nuget\\packages\\",
-      "outputPath": "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperations\\obj\\",
+      "projectPath": "D:\\Git\\Clone3\\FourOperations\\FourOperations\\FourOperations.csproj",
+      "packagesPath": "C:\\Users\\Administrator\\.nuget\\packages\\",
+      "outputPath": "D:\\Git\\Clone3\\FourOperations\\FourOperations\\obj\\",
       "projectStyle": "PackageReference",
       "fallbackFolders": [
-        "C:\\Microsoft\\Xamarin\\NuGet\\",
         "C:\\Program Files\\dotnet\\sdk\\NuGetFallbackFolder"
       ],
       "configFilePaths": [
-        "C:\\Users\\linso\\AppData\\Roaming\\NuGet\\NuGet.Config",
-        "C:\\Program Files (x86)\\NuGet\\Config\\Microsoft.VisualStudio.Offline.config",
-        "C:\\Program Files (x86)\\NuGet\\Config\\Xamarin.Offline.config"
+        "C:\\Users\\Administrator\\AppData\\Roaming\\NuGet\\NuGet.Config",
+        "C:\\Program Files (x86)\\NuGet\\Config\\Microsoft.VisualStudio.Offline.config"
       ],
       "originalTargetFrameworks": [
         "netstandard2.0"
       ],
       "sources": {
-        "C:\\Program Files (x86)\\Microsoft SDKs\\NuGetPackages\\": {},
-        "https://api.nuget.org/v3/index.json": {}
+        "https://www.nuget.org/api/v2/": {}
       },
       "frameworks": {
         "netstandard2.0": {
diff --git a/FourOperations/FourOperations/obj/project.nuget.cache b/FourOperations/FourOperations/obj/project.nuget.cache
index 53f666d50f3518739ee2aa9163bda9ee2999ad34..a79df8ce609204f9c5650a3b83dd3da862a99cf0 100644
--- a/FourOperations/FourOperations/obj/project.nuget.cache
+++ b/FourOperations/FourOperations/obj/project.nuget.cache
@@ -1,8 +1,8 @@
 {
   "version": 2,
-  "dgSpecHash": "JF4EwCmFvXm6nI58acGnbRjEzLrJ5BmBszA1YcrUg18RwDdre/lT2Sjb4sSD4QxakR+/jSkXpVLyFLH48+0HVw==",
+  "dgSpecHash": "h1/C4wAGcDJNUqSpm5XjgFPjLO4OHiT2o6e22KJRue5K1aZgg6bouokQcz3pfzqJX6Xckp+2jfOfQm/fjXRV/Q==",
   "success": true,
-  "projectFilePath": "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperations\\FourOperations.csproj",
+  "projectFilePath": "D:\\Git\\Clone3\\FourOperations\\FourOperations\\FourOperations.csproj",
   "expectedPackageFiles": [
     "C:\\Program Files\\dotnet\\sdk\\NuGetFallbackFolder\\microsoft.netcore.platforms\\1.1.0\\microsoft.netcore.platforms.1.1.0.nupkg.sha512",
     "C:\\Program Files\\dotnet\\sdk\\NuGetFallbackFolder\\netstandard.library\\2.0.3\\netstandard.library.2.0.3.nupkg.sha512"
diff --git a/FourOperations/FourOperationsDemo/A.xml b/FourOperations/FourOperationsDemo/A.xml
new file mode 100644
index 0000000000000000000000000000000000000000..82b84f8fd4ac82a18023acdb62e6ba43e9a8ad4a
--- /dev/null
+++ b/FourOperations/FourOperationsDemo/A.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<TopicName>
+  <Topic>5+3</Topic>
+  <Topic>3+13</Topic>
+  <Topic>13+0</Topic>
+  <Topic>3+17</Topic>
+  <Topic>14+1</Topic>
+  <Topic>8+8</Topic>
+  <Topic>5+11</Topic>
+  <Topic>11+10</Topic>
+  <Topic>1+8</Topic>
+  <Topic>15+0</Topic>
+</TopicName>
\ No newline at end of file
diff --git a/FourOperations/FourOperationsDemo/Program.cs b/FourOperations/FourOperationsDemo/Program.cs
index 27802f110a6b2d3604b75aea8b2057e0a670e8eb..780c6b8b1f41216a6e2c7e8c51faeb457ecf0414 100644
--- a/FourOperations/FourOperationsDemo/Program.cs
+++ b/FourOperations/FourOperationsDemo/Program.cs
@@ -61,13 +61,20 @@ namespace FourOperations
             //wr.WriteLine("测试！");
             //wr.Close();
             //oneTheme.AddThemeCount();
-            OneTheme onetheme = new OneTheme();
+            OneTheme oneTheme = new OneTheme();
             //oneTheme1.AddThemeCount();
             //Console.WriteLine("---------------------------------------");
             //oneTheme1.SubThemeCount();
-            onetheme.SubThemeCount();
-            onetheme.SubOutPutTxt();
-            onetheme.SubOutPutXml(onetheme);
+            //onetheme.SubThemeCount();
+            //onetheme.SubOutPutTxt();
+            //onetheme.SubOutPutXml(onetheme);
+            //oneTheme.AddThemeCount();
+            //oneTheme.SubOutPutXml(oneTheme);
+            //oneTheme.AddReaderXML();
+            //oneTheme.SubThemeCount();
+            //oneTheme.SubOutPutTxt();
+            //oneTheme.AddOutPutTxt();
+            oneTheme.AddReaderXML();
 
         }
     }
diff --git a/FourOperations/FourOperationsDemo/bin/Debug/netcoreapp3.1/FourOperations.dll b/FourOperations/FourOperationsDemo/bin/Debug/netcoreapp3.1/FourOperations.dll
index 34c920ff647694a71f644f2f3a760670af676444..0c94708738af87ea72e84d147104de5f5caeb0ae 100644
Binary files a/FourOperations/FourOperationsDemo/bin/Debug/netcoreapp3.1/FourOperations.dll and b/FourOperations/FourOperationsDemo/bin/Debug/netcoreapp3.1/FourOperations.dll differ
diff --git a/FourOperations/FourOperationsDemo/bin/Debug/netcoreapp3.1/FourOperations.pdb b/FourOperations/FourOperationsDemo/bin/Debug/netcoreapp3.1/FourOperations.pdb
index aeae09db31a35d160742dc9c5f6b2bdb2f1be5ef..826c6e8d3e8bf620cfbcc0055b6f687cf1f8d6bb 100644
Binary files a/FourOperations/FourOperationsDemo/bin/Debug/netcoreapp3.1/FourOperations.pdb and b/FourOperations/FourOperationsDemo/bin/Debug/netcoreapp3.1/FourOperations.pdb differ
diff --git a/FourOperations/FourOperationsDemo/bin/Debug/netcoreapp3.1/FourOperationsDemo.dll b/FourOperations/FourOperationsDemo/bin/Debug/netcoreapp3.1/FourOperationsDemo.dll
index 79c0ec842145d9bf25405662a93d40251d6cb1d9..04e9932f261378a1468948da0d42e47a4d690555 100644
Binary files a/FourOperations/FourOperationsDemo/bin/Debug/netcoreapp3.1/FourOperationsDemo.dll and b/FourOperations/FourOperationsDemo/bin/Debug/netcoreapp3.1/FourOperationsDemo.dll differ
diff --git a/FourOperations/FourOperationsDemo/bin/Debug/netcoreapp3.1/FourOperationsDemo.pdb b/FourOperations/FourOperationsDemo/bin/Debug/netcoreapp3.1/FourOperationsDemo.pdb
index f5a47571e013f85a36a49bfe1a2ecf0cc7f60626..e3e4c6eae65a2e8698ac2ed475bbac4fdfd3ea8c 100644
Binary files a/FourOperations/FourOperationsDemo/bin/Debug/netcoreapp3.1/FourOperationsDemo.pdb and b/FourOperations/FourOperationsDemo/bin/Debug/netcoreapp3.1/FourOperationsDemo.pdb differ
diff --git a/FourOperations/FourOperationsDemo/bin/Debug/netcoreapp3.1/FourOperationsDemo.runtimeconfig.dev.json b/FourOperations/FourOperationsDemo/bin/Debug/netcoreapp3.1/FourOperationsDemo.runtimeconfig.dev.json
index d0032b53f18cb5a4365e9bf6ebea969950bfa032..376e9695b259ac7f29e24234a0bb8e9cae5b01fd 100644
--- a/FourOperations/FourOperationsDemo/bin/Debug/netcoreapp3.1/FourOperationsDemo.runtimeconfig.dev.json
+++ b/FourOperations/FourOperationsDemo/bin/Debug/netcoreapp3.1/FourOperationsDemo.runtimeconfig.dev.json
@@ -1,9 +1,8 @@
 {
   "runtimeOptions": {
     "additionalProbingPaths": [
-      "C:\\Users\\linso\\.dotnet\\store\\|arch|\\|tfm|",
-      "C:\\Users\\linso\\.nuget\\packages",
-      "C:\\Microsoft\\Xamarin\\NuGet",
+      "C:\\Users\\Administrator\\.dotnet\\store\\|arch|\\|tfm|",
+      "C:\\Users\\Administrator\\.nuget\\packages",
       "C:\\Program Files\\dotnet\\sdk\\NuGetFallbackFolder"
     ]
   }
diff --git "a/FourOperations/FourOperationsDemo/bin/Debug/netcoreapp3.1/\346\211\223\345\215\260\346\226\207\344\273\266Sub.xml" "b/FourOperations/FourOperationsDemo/bin/Debug/netcoreapp3.1/\346\211\223\345\215\260\346\226\207\344\273\266Sub.xml"
new file mode 100644
index 0000000000000000000000000000000000000000..04016946e81261444ae294ea5f9d0153388679c9
--- /dev/null
+++ "b/FourOperations/FourOperationsDemo/bin/Debug/netcoreapp3.1/\346\211\223\345\215\260\346\226\207\344\273\266Sub.xml"
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<CreateTopic>
+  <Topic>18-1</Topic>
+  <Answer>17</Answer>
+  <Topic>9-1</Topic>
+  <Answer>8</Answer>
+  <Topic>19-1</Topic>
+  <Answer>18</Answer>
+  <Topic>5-2</Topic>
+  <Answer>3</Answer>
+  <Topic>13-5</Topic>
+  <Answer>8</Answer>
+  <Topic>17-1</Topic>
+  <Answer>16</Answer>
+  <Topic>8-6</Topic>
+  <Answer>2</Answer>
+  <Topic>18-15</Topic>
+  <Answer>3</Answer>
+  <Topic>13-0</Topic>
+  <Answer>13</Answer>
+  <Topic>16-7</Topic>
+  <Answer>9</Answer>
+</CreateTopic>
\ No newline at end of file
diff --git a/FourOperations/FourOperationsDemo/obj/Debug/netcoreapp3.1/FourOperationsDemo.assets.cache b/FourOperations/FourOperationsDemo/obj/Debug/netcoreapp3.1/FourOperationsDemo.assets.cache
index 5c739b6597047db7a78b9fc953b8ad3fc418eb25..e4d8b759a224078c0523152255eafda14b16d36d 100644
Binary files a/FourOperations/FourOperationsDemo/obj/Debug/netcoreapp3.1/FourOperationsDemo.assets.cache and b/FourOperations/FourOperationsDemo/obj/Debug/netcoreapp3.1/FourOperationsDemo.assets.cache differ
diff --git a/FourOperations/FourOperationsDemo/obj/Debug/netcoreapp3.1/FourOperationsDemo.csproj.CoreCompileInputs.cache b/FourOperations/FourOperationsDemo/obj/Debug/netcoreapp3.1/FourOperationsDemo.csproj.CoreCompileInputs.cache
index c4dce14449754b7daf632d42f27f9c88365d61a6..db9b2922573e0c96ac83ca08b4343f229e2a6c1f 100644
--- a/FourOperations/FourOperationsDemo/obj/Debug/netcoreapp3.1/FourOperationsDemo.csproj.CoreCompileInputs.cache
+++ b/FourOperations/FourOperationsDemo/obj/Debug/netcoreapp3.1/FourOperationsDemo.csproj.CoreCompileInputs.cache
@@ -1 +1 @@
-37919bf422a2b9e6cf61b173b6e669a6ad7aa0dc
+c75cadfc3e449c2743231d9f3c4472f026d51395
diff --git a/FourOperations/FourOperationsDemo/obj/Debug/netcoreapp3.1/FourOperationsDemo.csproj.FileListAbsolute.txt b/FourOperations/FourOperationsDemo/obj/Debug/netcoreapp3.1/FourOperationsDemo.csproj.FileListAbsolute.txt
index b44951a38581eb5093a63e228fb60a39dc37bdaf..891277601fd8f69ef350398939ab4163258d61f1 100644
--- a/FourOperations/FourOperationsDemo/obj/Debug/netcoreapp3.1/FourOperationsDemo.csproj.FileListAbsolute.txt
+++ b/FourOperations/FourOperationsDemo/obj/Debug/netcoreapp3.1/FourOperationsDemo.csproj.FileListAbsolute.txt
@@ -46,3 +46,19 @@ C:\Users\linso\Desktop\新建文件夹\FourOperations\FourOperations\FourOperati
 C:\Users\linso\Desktop\新建文件夹\FourOperations\FourOperations\FourOperationsDemo\obj\Debug\netcoreapp3.1\FourOperationsDemo.dll
 C:\Users\linso\Desktop\新建文件夹\FourOperations\FourOperations\FourOperationsDemo\obj\Debug\netcoreapp3.1\FourOperationsDemo.pdb
 C:\Users\linso\Desktop\新建文件夹\FourOperations\FourOperations\FourOperationsDemo\obj\Debug\netcoreapp3.1\FourOperationsDemo.genruntimeconfig.cache
+D:\Git\Clone3\FourOperations\FourOperationsDemo\bin\Debug\netcoreapp3.1\FourOperationsDemo.exe
+D:\Git\Clone3\FourOperations\FourOperationsDemo\bin\Debug\netcoreapp3.1\FourOperationsDemo.deps.json
+D:\Git\Clone3\FourOperations\FourOperationsDemo\bin\Debug\netcoreapp3.1\FourOperationsDemo.runtimeconfig.json
+D:\Git\Clone3\FourOperations\FourOperationsDemo\bin\Debug\netcoreapp3.1\FourOperationsDemo.runtimeconfig.dev.json
+D:\Git\Clone3\FourOperations\FourOperationsDemo\bin\Debug\netcoreapp3.1\FourOperationsDemo.dll
+D:\Git\Clone3\FourOperations\FourOperationsDemo\bin\Debug\netcoreapp3.1\FourOperationsDemo.pdb
+D:\Git\Clone3\FourOperations\FourOperationsDemo\bin\Debug\netcoreapp3.1\FourOperations.dll
+D:\Git\Clone3\FourOperations\FourOperationsDemo\bin\Debug\netcoreapp3.1\FourOperations.pdb
+D:\Git\Clone3\FourOperations\FourOperationsDemo\obj\Debug\netcoreapp3.1\FourOperationsDemo.csprojAssemblyReference.cache
+D:\Git\Clone3\FourOperations\FourOperationsDemo\obj\Debug\netcoreapp3.1\FourOperationsDemo.csproj.CoreCompileInputs.cache
+D:\Git\Clone3\FourOperations\FourOperationsDemo\obj\Debug\netcoreapp3.1\FourOperationsDemo.AssemblyInfoInputs.cache
+D:\Git\Clone3\FourOperations\FourOperationsDemo\obj\Debug\netcoreapp3.1\FourOperationsDemo.AssemblyInfo.cs
+D:\Git\Clone3\FourOperations\FourOperationsDemo\obj\Debug\netcoreapp3.1\FourOperationsDemo.csproj.CopyComplete
+D:\Git\Clone3\FourOperations\FourOperationsDemo\obj\Debug\netcoreapp3.1\FourOperationsDemo.dll
+D:\Git\Clone3\FourOperations\FourOperationsDemo\obj\Debug\netcoreapp3.1\FourOperationsDemo.pdb
+D:\Git\Clone3\FourOperations\FourOperationsDemo\obj\Debug\netcoreapp3.1\FourOperationsDemo.genruntimeconfig.cache
diff --git a/FourOperations/FourOperationsDemo/obj/Debug/netcoreapp3.1/FourOperationsDemo.csprojAssemblyReference.cache b/FourOperations/FourOperationsDemo/obj/Debug/netcoreapp3.1/FourOperationsDemo.csprojAssemblyReference.cache
index b6c9fef0c256b08a157eeff95ab601ce950c1397..afb770ce1545915d58b1cccce24292fbbeafc9b2 100644
Binary files a/FourOperations/FourOperationsDemo/obj/Debug/netcoreapp3.1/FourOperationsDemo.csprojAssemblyReference.cache and b/FourOperations/FourOperationsDemo/obj/Debug/netcoreapp3.1/FourOperationsDemo.csprojAssemblyReference.cache differ
diff --git a/FourOperations/FourOperationsDemo/obj/Debug/netcoreapp3.1/FourOperationsDemo.dll b/FourOperations/FourOperationsDemo/obj/Debug/netcoreapp3.1/FourOperationsDemo.dll
index 79c0ec842145d9bf25405662a93d40251d6cb1d9..04e9932f261378a1468948da0d42e47a4d690555 100644
Binary files a/FourOperations/FourOperationsDemo/obj/Debug/netcoreapp3.1/FourOperationsDemo.dll and b/FourOperations/FourOperationsDemo/obj/Debug/netcoreapp3.1/FourOperationsDemo.dll differ
diff --git a/FourOperations/FourOperationsDemo/obj/Debug/netcoreapp3.1/FourOperationsDemo.pdb b/FourOperations/FourOperationsDemo/obj/Debug/netcoreapp3.1/FourOperationsDemo.pdb
index f5a47571e013f85a36a49bfe1a2ecf0cc7f60626..e3e4c6eae65a2e8698ac2ed475bbac4fdfd3ea8c 100644
Binary files a/FourOperations/FourOperationsDemo/obj/Debug/netcoreapp3.1/FourOperationsDemo.pdb and b/FourOperations/FourOperationsDemo/obj/Debug/netcoreapp3.1/FourOperationsDemo.pdb differ
diff --git a/FourOperations/FourOperationsDemo/obj/FourOperationsDemo.csproj.nuget.dgspec.json b/FourOperations/FourOperationsDemo/obj/FourOperationsDemo.csproj.nuget.dgspec.json
index a13d0d029411c4c4a37711eadbac95dede41a7c9..49a6d208759272513c502f95132396a91b326881 100644
--- a/FourOperations/FourOperationsDemo/obj/FourOperationsDemo.csproj.nuget.dgspec.json
+++ b/FourOperations/FourOperationsDemo/obj/FourOperationsDemo.csproj.nuget.dgspec.json
@@ -1,39 +1,36 @@
 {
   "format": 1,
   "restore": {
-    "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperationsDemo\\FourOperationsDemo.csproj": {}
+    "D:\\Git\\Clone3\\FourOperations\\FourOperationsDemo\\FourOperationsDemo.csproj": {}
   },
   "projects": {
-    "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperationsDemo\\FourOperationsDemo.csproj": {
+    "D:\\Git\\Clone3\\FourOperations\\FourOperationsDemo\\FourOperationsDemo.csproj": {
       "version": "1.0.0",
       "restore": {
-        "projectUniqueName": "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperationsDemo\\FourOperationsDemo.csproj",
+        "projectUniqueName": "D:\\Git\\Clone3\\FourOperations\\FourOperationsDemo\\FourOperationsDemo.csproj",
         "projectName": "FourOperationsDemo",
-        "projectPath": "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperationsDemo\\FourOperationsDemo.csproj",
-        "packagesPath": "C:\\Users\\linso\\.nuget\\packages\\",
-        "outputPath": "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperationsDemo\\obj\\",
+        "projectPath": "D:\\Git\\Clone3\\FourOperations\\FourOperationsDemo\\FourOperationsDemo.csproj",
+        "packagesPath": "C:\\Users\\Administrator\\.nuget\\packages\\",
+        "outputPath": "D:\\Git\\Clone3\\FourOperations\\FourOperationsDemo\\obj\\",
         "projectStyle": "PackageReference",
         "fallbackFolders": [
-          "C:\\Microsoft\\Xamarin\\NuGet\\",
           "C:\\Program Files\\dotnet\\sdk\\NuGetFallbackFolder"
         ],
         "configFilePaths": [
-          "C:\\Users\\linso\\AppData\\Roaming\\NuGet\\NuGet.Config",
-          "C:\\Program Files (x86)\\NuGet\\Config\\Microsoft.VisualStudio.Offline.config",
-          "C:\\Program Files (x86)\\NuGet\\Config\\Xamarin.Offline.config"
+          "C:\\Users\\Administrator\\AppData\\Roaming\\NuGet\\NuGet.Config",
+          "C:\\Program Files (x86)\\NuGet\\Config\\Microsoft.VisualStudio.Offline.config"
         ],
         "originalTargetFrameworks": [
           "netcoreapp3.1"
         ],
         "sources": {
-          "C:\\Program Files (x86)\\Microsoft SDKs\\NuGetPackages\\": {},
-          "https://api.nuget.org/v3/index.json": {}
+          "https://www.nuget.org/api/v2/": {}
         },
         "frameworks": {
           "netcoreapp3.1": {
             "projectReferences": {
-              "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperations\\FourOperations.csproj": {
-                "projectPath": "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperations\\FourOperations.csproj"
+              "D:\\Git\\Clone3\\FourOperations\\FourOperations\\FourOperations.csproj": {
+                "projectPath": "D:\\Git\\Clone3\\FourOperations\\FourOperations\\FourOperations.csproj"
               }
             }
           }
@@ -65,30 +62,27 @@
         }
       }
     },
-    "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperations\\FourOperations.csproj": {
+    "D:\\Git\\Clone3\\FourOperations\\FourOperations\\FourOperations.csproj": {
       "version": "1.0.0",
       "restore": {
-        "projectUniqueName": "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperations\\FourOperations.csproj",
+        "projectUniqueName": "D:\\Git\\Clone3\\FourOperations\\FourOperations\\FourOperations.csproj",
         "projectName": "FourOperations",
-        "projectPath": "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperations\\FourOperations.csproj",
-        "packagesPath": "C:\\Users\\linso\\.nuget\\packages\\",
-        "outputPath": "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperations\\obj\\",
+        "projectPath": "D:\\Git\\Clone3\\FourOperations\\FourOperations\\FourOperations.csproj",
+        "packagesPath": "C:\\Users\\Administrator\\.nuget\\packages\\",
+        "outputPath": "D:\\Git\\Clone3\\FourOperations\\FourOperations\\obj\\",
         "projectStyle": "PackageReference",
         "fallbackFolders": [
-          "C:\\Microsoft\\Xamarin\\NuGet\\",
           "C:\\Program Files\\dotnet\\sdk\\NuGetFallbackFolder"
         ],
         "configFilePaths": [
-          "C:\\Users\\linso\\AppData\\Roaming\\NuGet\\NuGet.Config",
-          "C:\\Program Files (x86)\\NuGet\\Config\\Microsoft.VisualStudio.Offline.config",
-          "C:\\Program Files (x86)\\NuGet\\Config\\Xamarin.Offline.config"
+          "C:\\Users\\Administrator\\AppData\\Roaming\\NuGet\\NuGet.Config",
+          "C:\\Program Files (x86)\\NuGet\\Config\\Microsoft.VisualStudio.Offline.config"
         ],
         "originalTargetFrameworks": [
           "netstandard2.0"
         ],
         "sources": {
-          "C:\\Program Files (x86)\\Microsoft SDKs\\NuGetPackages\\": {},
-          "https://api.nuget.org/v3/index.json": {}
+          "https://www.nuget.org/api/v2/": {}
         },
         "frameworks": {
           "netstandard2.0": {
diff --git a/FourOperations/FourOperationsDemo/obj/FourOperationsDemo.csproj.nuget.g.props b/FourOperations/FourOperationsDemo/obj/FourOperationsDemo.csproj.nuget.g.props
index a6c665ef69fd4e1484541861fdddecf05fba6c86..7ce75f8acd46a471e226006e9ca6b958d782628d 100644
--- a/FourOperations/FourOperationsDemo/obj/FourOperationsDemo.csproj.nuget.g.props
+++ b/FourOperations/FourOperationsDemo/obj/FourOperationsDemo.csproj.nuget.g.props
@@ -5,7 +5,7 @@
     <RestoreTool Condition=" '$(RestoreTool)' == '' ">NuGet</RestoreTool>
     <ProjectAssetsFile Condition=" '$(ProjectAssetsFile)' == '' ">$(MSBuildThisFileDirectory)project.assets.json</ProjectAssetsFile>
     <NuGetPackageRoot Condition=" '$(NuGetPackageRoot)' == '' ">$(UserProfile)\.nuget\packages\</NuGetPackageRoot>
-    <NuGetPackageFolders Condition=" '$(NuGetPackageFolders)' == '' ">C:\Users\linso\.nuget\packages\;C:\Microsoft\Xamarin\NuGet\;C:\Program Files\dotnet\sdk\NuGetFallbackFolder</NuGetPackageFolders>
+    <NuGetPackageFolders Condition=" '$(NuGetPackageFolders)' == '' ">C:\Users\Administrator\.nuget\packages\;C:\Program Files\dotnet\sdk\NuGetFallbackFolder</NuGetPackageFolders>
     <NuGetProjectStyle Condition=" '$(NuGetProjectStyle)' == '' ">PackageReference</NuGetProjectStyle>
     <NuGetToolVersion Condition=" '$(NuGetToolVersion)' == '' ">5.5.0</NuGetToolVersion>
   </PropertyGroup>
diff --git a/FourOperations/FourOperationsDemo/obj/Release/netcoreapp3.1/FourOperationsDemo.AssemblyInfo.cs b/FourOperations/FourOperationsDemo/obj/Release/netcoreapp3.1/FourOperationsDemo.AssemblyInfo.cs
new file mode 100644
index 0000000000000000000000000000000000000000..7bb5205ef068d353a3bb2104663d924240e0b9ad
--- /dev/null
+++ b/FourOperations/FourOperationsDemo/obj/Release/netcoreapp3.1/FourOperationsDemo.AssemblyInfo.cs
@@ -0,0 +1,23 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     此代码由工具生成。
+//     运行时版本:4.0.30319.42000
+//
+//     对此文件的更改可能会导致不正确的行为，并且如果
+//     重新生成代码，这些更改将会丢失。
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+using System;
+using System.Reflection;
+
+[assembly: System.Reflection.AssemblyCompanyAttribute("FourOperationsDemo")]
+[assembly: System.Reflection.AssemblyConfigurationAttribute("Release")]
+[assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
+[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0")]
+[assembly: System.Reflection.AssemblyProductAttribute("FourOperationsDemo")]
+[assembly: System.Reflection.AssemblyTitleAttribute("FourOperationsDemo")]
+[assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]
+
+// 由 MSBuild WriteCodeFragment 类生成。
+
diff --git a/FourOperations/FourOperationsDemo/obj/Release/netcoreapp3.1/FourOperationsDemo.AssemblyInfoInputs.cache b/FourOperations/FourOperationsDemo/obj/Release/netcoreapp3.1/FourOperationsDemo.AssemblyInfoInputs.cache
new file mode 100644
index 0000000000000000000000000000000000000000..1635fd9a66ad14546e175050b00a7e5c63ca8144
--- /dev/null
+++ b/FourOperations/FourOperationsDemo/obj/Release/netcoreapp3.1/FourOperationsDemo.AssemblyInfoInputs.cache
@@ -0,0 +1 @@
+193a273d28f95635b57a37bea4385e2d130cb9b8
diff --git a/FourOperations/FourOperationsDemo/obj/Release/netcoreapp3.1/FourOperationsDemo.assets.cache b/FourOperations/FourOperationsDemo/obj/Release/netcoreapp3.1/FourOperationsDemo.assets.cache
new file mode 100644
index 0000000000000000000000000000000000000000..1d07aff02ad9b05323edf449863e9c82de0bb75d
Binary files /dev/null and b/FourOperations/FourOperationsDemo/obj/Release/netcoreapp3.1/FourOperationsDemo.assets.cache differ
diff --git a/FourOperations/FourOperationsDemo/obj/project.assets.json b/FourOperations/FourOperationsDemo/obj/project.assets.json
index 23bff3f8ae48e889ef1ad854c3758dd3725ba185..c07b0c8391b3d19cf7458ef2922bfd434d18ac83 100644
--- a/FourOperations/FourOperationsDemo/obj/project.assets.json
+++ b/FourOperations/FourOperationsDemo/obj/project.assets.json
@@ -27,40 +27,36 @@
     ]
   },
   "packageFolders": {
-    "C:\\Users\\linso\\.nuget\\packages\\": {},
-    "C:\\Microsoft\\Xamarin\\NuGet\\": {},
+    "C:\\Users\\Administrator\\.nuget\\packages\\": {},
     "C:\\Program Files\\dotnet\\sdk\\NuGetFallbackFolder": {}
   },
   "project": {
     "version": "1.0.0",
     "restore": {
-      "projectUniqueName": "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperationsDemo\\FourOperationsDemo.csproj",
+      "projectUniqueName": "D:\\Git\\Clone3\\FourOperations\\FourOperationsDemo\\FourOperationsDemo.csproj",
       "projectName": "FourOperationsDemo",
-      "projectPath": "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperationsDemo\\FourOperationsDemo.csproj",
-      "packagesPath": "C:\\Users\\linso\\.nuget\\packages\\",
-      "outputPath": "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperationsDemo\\obj\\",
+      "projectPath": "D:\\Git\\Clone3\\FourOperations\\FourOperationsDemo\\FourOperationsDemo.csproj",
+      "packagesPath": "C:\\Users\\Administrator\\.nuget\\packages\\",
+      "outputPath": "D:\\Git\\Clone3\\FourOperations\\FourOperationsDemo\\obj\\",
       "projectStyle": "PackageReference",
       "fallbackFolders": [
-        "C:\\Microsoft\\Xamarin\\NuGet\\",
         "C:\\Program Files\\dotnet\\sdk\\NuGetFallbackFolder"
       ],
       "configFilePaths": [
-        "C:\\Users\\linso\\AppData\\Roaming\\NuGet\\NuGet.Config",
-        "C:\\Program Files (x86)\\NuGet\\Config\\Microsoft.VisualStudio.Offline.config",
-        "C:\\Program Files (x86)\\NuGet\\Config\\Xamarin.Offline.config"
+        "C:\\Users\\Administrator\\AppData\\Roaming\\NuGet\\NuGet.Config",
+        "C:\\Program Files (x86)\\NuGet\\Config\\Microsoft.VisualStudio.Offline.config"
       ],
       "originalTargetFrameworks": [
         "netcoreapp3.1"
       ],
       "sources": {
-        "C:\\Program Files (x86)\\Microsoft SDKs\\NuGetPackages\\": {},
-        "https://api.nuget.org/v3/index.json": {}
+        "https://www.nuget.org/api/v2/": {}
       },
       "frameworks": {
         "netcoreapp3.1": {
           "projectReferences": {
-            "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperations\\FourOperations.csproj": {
-              "projectPath": "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperations\\FourOperations.csproj"
+            "D:\\Git\\Clone3\\FourOperations\\FourOperations\\FourOperations.csproj": {
+              "projectPath": "D:\\Git\\Clone3\\FourOperations\\FourOperations\\FourOperations.csproj"
             }
           }
         }
diff --git a/FourOperations/FourOperationsDemo/obj/project.nuget.cache b/FourOperations/FourOperationsDemo/obj/project.nuget.cache
index 84ff5fb1a654ed8ac6c77598574d16328babb827..13b02572a5a1d902e6861d9113c79d6ccc0ca5f9 100644
--- a/FourOperations/FourOperationsDemo/obj/project.nuget.cache
+++ b/FourOperations/FourOperationsDemo/obj/project.nuget.cache
@@ -1,8 +1,8 @@
 {
   "version": 2,
-  "dgSpecHash": "tZBCd+wuQG/MC2LKxmpJdndP5PhAYxxfldMNBS30cpZiUJ2fiIoBmJDF1la9O1BLPju3akOLat4sqWTY1xb+fg==",
+  "dgSpecHash": "GWpITBFBJKmYLmyGY/HBavsMQsRtWIsRuTwX+9haJtbDO6H8cwdSsKalgI3cLDRw8m7lfmUTCRAultnslzXDZA==",
   "success": true,
-  "projectFilePath": "C:\\Users\\linso\\Desktop\\新建文件夹\\FourOperations\\FourOperations\\FourOperationsDemo\\FourOperationsDemo.csproj",
+  "projectFilePath": "D:\\Git\\Clone3\\FourOperations\\FourOperationsDemo\\FourOperationsDemo.csproj",
   "expectedPackageFiles": [],
   "logs": []
 }
\ No newline at end of file
diff --git "a/FourOperations/FourOperationsDemo/\346\211\223\345\215\260\346\226\207\344\273\266Add.xml" "b/FourOperations/FourOperationsDemo/\346\211\223\345\215\260\346\226\207\344\273\266Add.xml"
index 74b1d522fa9acc7f39742f0eee82543d0b506aab..38eddbd825a8324689b737e055ab5fbd0936cabe 100644
--- "a/FourOperations/FourOperationsDemo/\346\211\223\345\215\260\346\226\207\344\273\266Add.xml"
+++ "b/FourOperations/FourOperationsDemo/\346\211\223\345\215\260\346\226\207\344\273\266Add.xml"
@@ -1,23 +1,23 @@
 <?xml version="1.0" encoding="utf-8"?>
-<生成题目>
-  <题目>17+12</题目>
-  <答案>29</答案>
-  <题目>8+0</题目>
-  <答案>8</答案>
-  <题目>5+0</题目>
-  <答案>5</答案>
-  <题目>13+10</题目>
-  <答案>23</答案>
-  <题目>12+8</题目>
-  <答案>20</答案>
-  <题目>17+15</题目>
-  <答案>32</答案>
-  <题目>19+13</题目>
-  <答案>32</答案>
-  <题目>1+1</题目>
-  <答案>2</答案>
-  <题目>1+18</题目>
-  <答案>19</答案>
-  <题目>10+3</题目>
-  <答案>13</答案>
-</生成题目>
\ No newline at end of file
+<Create>
+  <Theme>2+5</Theme>
+  <Answer>7</Answer>
+  <Theme>13+18</Theme>
+  <Answer>31</Answer>
+  <Theme>2+13</Theme>
+  <Answer>15</Answer>
+  <Theme>14+10</Theme>
+  <Answer>24</Answer>
+  <Theme>13+7</Theme>
+  <Answer>20</Answer>
+  <Theme>10+8</Theme>
+  <Answer>18</Answer>
+  <Theme>6+14</Theme>
+  <Answer>20</Answer>
+  <Theme>9+4</Theme>
+  <Answer>13</Answer>
+  <Theme>10+0</Theme>
+  <Answer>10</Answer>
+  <Theme>5+11</Theme>
+  <Answer>16</Answer>
+</Create>
\ No newline at end of file
diff --git "a/FourOperations/FourOperationsDemo/\346\211\223\345\215\260\346\226\207\344\273\266Sub.xml" "b/FourOperations/FourOperationsDemo/\346\211\223\345\215\260\346\226\207\344\273\266Sub.xml"
index fdc33cc7ff39063c4c3bf0854b7ff3bcdadeddc6..2cb60b8ef439f80c7a00e148ded999cf38323d08 100644
--- "a/FourOperations/FourOperationsDemo/\346\211\223\345\215\260\346\226\207\344\273\266Sub.xml"
+++ "b/FourOperations/FourOperationsDemo/\346\211\223\345\215\260\346\226\207\344\273\266Sub.xml"
@@ -1,23 +1,23 @@
 <?xml version="1.0" encoding="utf-8"?>
-<生成题目>
-  <题目>11-5</题目>
-  <答案>6</答案>
-  <题目>13-10</题目>
-  <答案>3</答案>
-  <题目>11-1</题目>
-  <答案>10</答案>
-  <题目>3-2</题目>
-  <答案>1</答案>
-  <题目>19-5</题目>
-  <答案>14</答案>
-  <题目>13-6</题目>
-  <答案>7</答案>
-  <题目>9-7</题目>
-  <答案>2</答案>
-  <题目>18-17</题目>
-  <答案>1</答案>
-  <题目>12-6</题目>
-  <答案>6</答案>
-  <题目>17-0</题目>
-  <答案>17</答案>
-</生成题目>
\ No newline at end of file
+<Create>
+  <Theme>10-2</Theme>
+  <Answer>8</Answer>
+  <Theme>15-2</Theme>
+  <Answer>13</Answer>
+  <Theme>16-11</Theme>
+  <Answer>5</Answer>
+  <Theme>12-6</Theme>
+  <Answer>6</Answer>
+  <Theme>18-5</Theme>
+  <Answer>13</Answer>
+  <Theme>19-6</Theme>
+  <Answer>13</Answer>
+  <Theme>6-2</Theme>
+  <Answer>4</Answer>
+  <Theme>8-2</Theme>
+  <Answer>6</Answer>
+  <Theme>9-8</Theme>
+  <Answer>1</Answer>
+  <Theme>18-1</Theme>
+  <Answer>17</Answer>
+</Create>
\ No newline at end of file