diff --git a/B/66.html b/B/66.html
new file mode 100644
index 000000000..2a77a2735
--- /dev/null
+++ b/B/66.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html>
+<head>
+	<meta charset="utf-8">
+	<meta name="viewport" content="width=device-width, initial-scale=1">
+	<title>模板</title>
+</head>
+<body>
+	<div id="app"></div>
+	<script src="./package/old/react.development.js"></script>
+    <script src="./package/old/react-dom.development.js"></script>
+    <script src="./package/old/babel.min.js"></script>
+    <script type="text/babel">
+    	
+    </script>
+</body>
+</html>
\ No newline at end of file
diff --git a/B/P01.html b/B/P01.html
new file mode 100644
index 000000000..6e073e1d9
--- /dev/null
+++ b/B/P01.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html>
+<head>
+	<meta charset="utf-8">
+	<meta name="viewport" content="width=device-width, initial-scale=1">
+	<title></title>
+	<style type="text/css">
+		.haha{
+			color: red;
+		}
+	</style>
+</head>
+<body>
+	<div id="app"></div>
+	<script src="./package/old/react.development.js"></script>
+    <script src="./package/old/react-dom.development.js"></script>
+    <script src="./package/old/babel.min.js"></script>
+    <script type="text/babel">
+    	const text="hello world!";
+    	const vdom=(
+    		<div className="haha">
+    			<h1>{text}</h1>
+    		</div>
+    	);
+    	ReactDOM.render(
+    		vdom,document.getElementById('app')
+    	)
+    	console.log(vdom);
+    	console.log(document.getElementById('app'))
+    </script>
+</body>
+</html>
\ No newline at end of file
diff --git a/ex/exercise2/package-lock.json b/ex/exercise2/package-lock.json
index 9e8213e41..01874e4b7 100644
--- a/ex/exercise2/package-lock.json
+++ b/ex/exercise2/package-lock.json
@@ -14802,7 +14802,6 @@
           "version": "2.3.2",
           "resolved": "https://registry.npm.taobao.org/braces/download/braces-2.3.2.tgz",
           "integrity": "sha1-WXn9PxTNUxVl5fot8av/8d+u5yk=",
-          "optional": true,
           "requires": {
             "arr-flatten": "^1.1.0",
             "array-unique": "^0.3.2",
@@ -14820,7 +14819,6 @@
               "version": "2.0.1",
               "resolved": "https://registry.npm.taobao.org/extend-shallow/download/extend-shallow-2.0.1.tgz",
               "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
-              "optional": true,
               "requires": {
                 "is-extendable": "^0.1.0"
               }
@@ -14851,7 +14849,6 @@
           "version": "4.0.0",
           "resolved": "https://registry.npm.taobao.org/fill-range/download/fill-range-4.0.0.tgz",
           "integrity": "sha1-1USBHUKPmOsGpj3EAtJAPDKMOPc=",
-          "optional": true,
           "requires": {
             "extend-shallow": "^2.0.1",
             "is-number": "^3.0.0",
@@ -14863,7 +14860,6 @@
               "version": "2.0.1",
               "resolved": "https://registry.npm.taobao.org/extend-shallow/download/extend-shallow-2.0.1.tgz",
               "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
-              "optional": true,
               "requires": {
                 "is-extendable": "^0.1.0"
               }
@@ -14914,7 +14910,6 @@
           "version": "3.0.0",
           "resolved": "https://registry.npm.taobao.org/is-number/download/is-number-3.0.0.tgz",
           "integrity": "sha1-JP1iAaR4LPUFYcgQJ2r8fRLXEZU=",
-          "optional": true,
           "requires": {
             "kind-of": "^3.0.2"
           },
@@ -14923,7 +14918,6 @@
               "version": "3.2.2",
               "resolved": "https://registry.npm.taobao.org/kind-of/download/kind-of-3.2.2.tgz",
               "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
-              "optional": true,
               "requires": {
                 "is-buffer": "^1.1.5"
               }
@@ -14934,7 +14928,6 @@
           "version": "3.1.10",
           "resolved": "https://registry.nlark.com/micromatch/download/micromatch-3.1.10.tgz",
           "integrity": "sha1-cIWbyVyYQJUvNZoGij/En57PrCM=",
-          "optional": true,
           "requires": {
             "arr-diff": "^4.0.0",
             "array-unique": "^0.3.2",
@@ -14966,7 +14959,6 @@
           "version": "2.1.1",
           "resolved": "https://registry.npm.taobao.org/to-regex-range/download/to-regex-range-2.1.1.tgz",
           "integrity": "sha1-fIDBe53+vlmeJzZ+DU3VWQFB2zg=",
-          "optional": true,
           "requires": {
             "is-number": "^3.0.0",
             "repeat-string": "^1.6.1"
diff --git a/ex/exercise3/package-lock.json b/ex/exercise3/package-lock.json
index 825b83657..5523e86d9 100644
--- a/ex/exercise3/package-lock.json
+++ b/ex/exercise3/package-lock.json
@@ -14848,7 +14848,6 @@
           "version": "2.3.2",
           "resolved": "https://registry.npm.taobao.org/braces/download/braces-2.3.2.tgz",
           "integrity": "sha1-WXn9PxTNUxVl5fot8av/8d+u5yk=",
-          "optional": true,
           "requires": {
             "arr-flatten": "^1.1.0",
             "array-unique": "^0.3.2",
@@ -14866,7 +14865,6 @@
               "version": "2.0.1",
               "resolved": "https://registry.npm.taobao.org/extend-shallow/download/extend-shallow-2.0.1.tgz",
               "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
-              "optional": true,
               "requires": {
                 "is-extendable": "^0.1.0"
               }
@@ -14897,7 +14895,6 @@
           "version": "4.0.0",
           "resolved": "https://registry.npm.taobao.org/fill-range/download/fill-range-4.0.0.tgz",
           "integrity": "sha1-1USBHUKPmOsGpj3EAtJAPDKMOPc=",
-          "optional": true,
           "requires": {
             "extend-shallow": "^2.0.1",
             "is-number": "^3.0.0",
@@ -14909,7 +14906,6 @@
               "version": "2.0.1",
               "resolved": "https://registry.npm.taobao.org/extend-shallow/download/extend-shallow-2.0.1.tgz",
               "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
-              "optional": true,
               "requires": {
                 "is-extendable": "^0.1.0"
               }
@@ -14960,7 +14956,6 @@
           "version": "3.0.0",
           "resolved": "https://registry.npm.taobao.org/is-number/download/is-number-3.0.0.tgz",
           "integrity": "sha1-JP1iAaR4LPUFYcgQJ2r8fRLXEZU=",
-          "optional": true,
           "requires": {
             "kind-of": "^3.0.2"
           },
@@ -14969,7 +14964,6 @@
               "version": "3.2.2",
               "resolved": "https://registry.npm.taobao.org/kind-of/download/kind-of-3.2.2.tgz",
               "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
-              "optional": true,
               "requires": {
                 "is-buffer": "^1.1.5"
               }
@@ -14980,7 +14974,6 @@
           "version": "3.1.10",
           "resolved": "https://registry.npm.taobao.org/micromatch/download/micromatch-3.1.10.tgz?cache=0&sync_timestamp=1618054841521&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fmicromatch%2Fdownload%2Fmicromatch-3.1.10.tgz",
           "integrity": "sha1-cIWbyVyYQJUvNZoGij/En57PrCM=",
-          "optional": true,
           "requires": {
             "arr-diff": "^4.0.0",
             "array-unique": "^0.3.2",
@@ -15012,7 +15005,6 @@
           "version": "2.1.1",
           "resolved": "https://registry.npm.taobao.org/to-regex-range/download/to-regex-range-2.1.1.tgz",
           "integrity": "sha1-fIDBe53+vlmeJzZ+DU3VWQFB2zg=",
-          "optional": true,
           "requires": {
             "is-number": "^3.0.0",
             "repeat-string": "^1.6.1"