diff --git a/app/views/exercise_questions/_exercise_questions.json.jbuilder b/app/views/exercise_questions/_exercise_questions.json.jbuilder
index bbdf45440..ca8ea7e6b 100644
--- a/app/views/exercise_questions/_exercise_questions.json.jbuilder
+++ b/app/views/exercise_questions/_exercise_questions.json.jbuilder
@@ -20,10 +20,20 @@ if question.question_type <= 2  #当为选择题或判断题时，只显示选
       #TODO: 旧版本来一个题只有一个标准答案的，新版又做成了一个题有多个标准答案（exercise_choice_id存放的是标准答案的位置..）
       standard_answer_b = standard_answers_array.join("").include?(a.choice_position.to_s)
       user_answer_b = user_answer.include?(a.id)
+      choice_text = a.choice_text
+      if question.question_type == 2
+        if choice_text == "对"
+          choice_text = "正确"
+        end
+        if choice_text == "错"
+          choice_text = "错误"
+        end
+      end
       json.c_position (index+1) if ex_choice_random_boolean  #当选项随机时，选项位置以此为准，否则不出现
       json.choice_id a.id
       # json.choice_text (edit_type.present? || question.question_type == 2) ? a.choice_text : "#{(index+65).chr}.#{a.choice_text}"
-      json.choice_text a.choice_text
+
+      json.choice_text choice_text
       json.choice_position a.choice_position
       if exercise_type == 1 || exercise_type == 4  #1为教师编辑/预览 试卷或问题，2为空白试卷，即标准答案和用户答案都不显示，3为用户开始答题的显示，4为老师评阅试卷或学生在截止后查看试卷
         json.standard_boolean standard_answer_b
@@ -36,6 +46,14 @@ if question.question_type <= 2  #当为选择题或判断题时，只显示选
 
   if exercise_type == 1 || exercise_type == 4   #1为老师，4为试卷截止且答案公开的情况
     json.standard_answer standard_answers_array
+    if question.question_type == 2   #返回答案的文字
+      standard_text = standard_answers_array.first.to_i == 1 ? "正确" : "错误"
+    else
+      array_text_answer = []
+      standard_answers_array.each{|a| array_text_answer.push((a+64).chr)}
+      standard_text = array_text_answer.join("")
+    end
+    json.standard_answer_show  standard_text
   end
   if exercise_type == 3 || exercise_type == 4
     json.user_answer user_answer
diff --git a/config/environments/development.rb b/config/environments/development.rb
index cdcd45ec5..f0b3f1775 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -50,12 +50,11 @@ Rails.application.configure do
   # Debug mode disables concatenation and preprocessing of assets.
   # This option may cause significant delays in view rendering with a large
   # number of complex assets.
-  config.assets.debug = false
+  config.assets.debug = true
 
   # Suppress logger output for asset requests.
   config.assets.quiet = true
 
-  config.assets.compile = true
   # config.assets.prefix = '/dev-assets'
 
   # Raises error for missing translations
diff --git a/public/images/educoder/path.png b/public/images/educoder/path.png
index d3d816012..b7feec66c 100644
Binary files a/public/images/educoder/path.png and b/public/images/educoder/path.png differ
diff --git a/public/images/educoder/path1.png b/public/images/educoder/path1.png
new file mode 100644
index 000000000..d3d816012
Binary files /dev/null and b/public/images/educoder/path1.png differ
diff --git a/public/react/public/js/js_min_all.js b/public/react/public/js/js_min_all.js
index 63c1207af..0d56d86ba 100755
--- a/public/react/public/js/js_min_all.js
+++ b/public/react/public/js/js_min_all.js
@@ -236,8 +236,7 @@ $(function(){
         if(dragging) {
             clickX = e.pageX || e.originalEvent.touches[0].pageX;;
             if(clickX > leftOffset+0&&clickX<leftOffset+1600) {
-                console.log('resize')
-                //console.log(1);
+                // console.log('resize')
                 lab.css('left', clickX - 7 - leftOffset + 'px');
                 $("#game_left_contents").width( clickX-leftOffset + 'px');
                 nextW2 = clickX-leftOffset;
@@ -314,10 +313,16 @@ $(function(){
 		window.top.__updateWebsshRows && window.top.__updateWebsshRows(rows)
     }
     window.refresh_editor_monaco = function(height) {
+        console.log('refresh_editor_monaco')
         if (window.editor_monaco) {
             height && $('#codetab_con_1').height(height)
             window.editor_monaco.layout();
         } 
+        // if ($('#game_operate_action').width() < 720) {
+        //     $('#game_operate_action .time_limit').hide()
+        // } else {
+        //     $('#game_operate_action .time_limit').show()
+        // }
     }
     // end;
    //解決IE瀏覽器大小改變時webssh佈局變亂。
diff --git a/public/react/scripts/build.js b/public/react/scripts/build.js
index e18ff438d..d600d6068 100644
--- a/public/react/scripts/build.js
+++ b/public/react/scripts/build.js
@@ -203,12 +203,12 @@ function generateNewIndexJsp() {
       <script>
          (function() {
             var _host = '/react/build/'
-            /*
+            /**/
             if (window.location.host == 'pre-newweb.educoder.net') {
                 _host = 'https://testali-cdn.educoder.net/react/build/'
             } else if (window.location.host == 'www.educoder.net') {
                 _host = 'https://ali-newweb.educoder.net/react/build/'
-            }*/
+            }
             document.write('<script type="text/javascript" src="' + _host + 'js/js_min_all.js"><\\/script>');
             document.write('<script type="text/javascript" src="' + _host + 'static/js/main.${matchResult[1]}.js"><\\/script>');
          })()
diff --git a/public/react/src/modules/courses/gradinforms/Bullsubdirectory.js b/public/react/src/modules/courses/gradinforms/Bullsubdirectory.js
index 45da1773b..b9ec4b75c 100644
--- a/public/react/src/modules/courses/gradinforms/Bullsubdirectory.js
+++ b/public/react/src/modules/courses/gradinforms/Bullsubdirectory.js
@@ -167,7 +167,7 @@ class Bullsubdirectory extends Component{
 													<div>
 														<div>
 															<div className="fudonyingxiangysl">
-																<div style={{marginRight:"59px"}}>
+																<div style={{marginRight:"60px"}}>
 																	<span className="ysltitbt">{myname}</span>
 																</div>
 																<div>
diff --git a/public/react/src/modules/courses/members/studentsList.js b/public/react/src/modules/courses/members/studentsList.js
index 2a510789e..cc7485101 100644
--- a/public/react/src/modules/courses/members/studentsList.js
+++ b/public/react/src/modules/courses/members/studentsList.js
@@ -35,6 +35,7 @@ const buildColumns = (that) => {
     dataIndex: 'login',
     key: 'login',
     align:'center',
+    width:"10%",
     className:"color-grey-6",
     render: (login, record) => {
       return <span className="color-dark overflowHidden1" style={{maxWidth: '160px'}}
@@ -57,9 +58,10 @@ const buildColumns = (that) => {
     dataIndex: 'student_id',
     key: 'student_id',
     align:'center',
+    width:"10%",
     className:"color-grey-6",
     render: (student_id, record) => {
-      return <span className="color-dark overflowHidden1 "title={student_id && student_id.length > 10 ? student_id : ''}
+      return <span className="color-dark overflowHidden1 " title={student_id && student_id.length > 10 ? student_id : ''}
           style={{maxWidth: '160px'}} >{student_id}</span>
     }
   }];
@@ -69,7 +71,7 @@ const buildColumns = (that) => {
       dataIndex: 'course_group_name',
       key: 'course_group_name',
       align:'center',
-      width:"50%",
+      width:"40%",
       className:"color-grey-6"
     })
   }
diff --git a/public/react/src/modules/page/main/ActionView.js b/public/react/src/modules/page/main/ActionView.js
index 1a887fa75..6a38ad6aa 100644
--- a/public/react/src/modules/page/main/ActionView.js
+++ b/public/react/src/modules/page/main/ActionView.js
@@ -52,9 +52,16 @@ class ActionView extends Component {
 	componentDidMount() {
 		// request
 		window._tpiWidthResize = () => {
-			if (window.$('#actionView').width() < 580) {
+			const _w = window.$('#actionView').width();
+			if (_w < 446) {
+				window.$('#time-consuming').hide()
+				// window.$('#time-consuming').hide()
+			} else if (_w < 746) {
+				// 文字放出来之前是 580
+				window.$('#time-consuming').show()
 				window.$('.time_limit').hide()
 			} else {
+				window.$('#time-consuming').show()
 				window.$('.time_limit').show()
 			}
  		}
@@ -71,16 +78,27 @@ class ActionView extends Component {
 	      	<div className="-flex -layout-h" id="game_operate_action">
 			  	<style>{`
 				  .time_limit {
-					  margin-right: 16px;
+					  margin-right: 0px;
+				  }
+				  .spliter {
+						border-right: 1px solid;
+						padding-right: 8px;
+						margin-right: 8px;
+						height: 14px;
+						display: inline-block;
+						position: relative;
+						top: 3px;
 				  }
 				  `}</style>
 	      		<span className="mt10 -flex c_grey ml15" id="time-consuming">
 				  	{!!time_limit && 
-					  <span className="time_limit">{`本关最大执行时间：${real_time_limit}秒`}</span>} 
+					  <span className="time_limit">{`本关最大执行时间：${real_time_limit}秒`}
+					  	<span className="spliter"></span>
+					  </span>} 
 	      			{!gameBuilding && record ? 
-	      				<Tooltip title={ "本次评测耗时(编译、运行总时间)" }>
-	      					<span>{ record } 秒</span>
-	      				</Tooltip>
+	      				// <Tooltip title={ "本次评测耗时(编译、运行总时间)" }></Tooltip>
+	      					<span>本次评测耗时(编译、运行总时间)：{ record } 秒</span>
+	      				
 	      			: ""}
 	      		</span>
 
diff --git a/public/react/src/modules/page/tpiPageForMobile.css b/public/react/src/modules/page/tpiPageForMobile.css
index c30f40636..a2d903823 100644
--- a/public/react/src/modules/page/tpiPageForMobile.css
+++ b/public/react/src/modules/page/tpiPageForMobile.css
@@ -14,13 +14,16 @@
 		min-width: 280px;
 	}
 
-	#time-consuming .time_limit {
-		display: none;
-	}
+	
 	.actionViewfirstButton {
 		display: none !important;
 	}
 }
+@media (max-width: 800px) {
+	#time-consuming .time_limit {
+		display: none;
+	}
+}
 @media (max-width: 628px) {
 	.-header-right { display: none }	
 	.exitBtn span { display: none }
diff --git a/public/react/src/modules/paths/PathDetail/DetailCardsEditAndAdd.js b/public/react/src/modules/paths/PathDetail/DetailCardsEditAndAdd.js
index e9770e969..9f4d49a04 100644
--- a/public/react/src/modules/paths/PathDetail/DetailCardsEditAndAdd.js
+++ b/public/react/src/modules/paths/PathDetail/DetailCardsEditAndAdd.js
@@ -297,43 +297,49 @@ class DetailCardsEditAndAdd extends Component{
 
 
   contentViewScrolladd=(e)=>{
+  	const {ChooseShixunList}=this.state;
     //滑动到底判断
     if(e.currentTarget.scrollHeight-e.currentTarget.scrollTop===e.currentTarget.clientHeight){
-      // console.log("到达底部");
-				this.setState({
-					hometypepvisible:true
-				})
-				let pathId=this.props.pathid;
-				let {search,page,type,ChooseShixunListshixun_list}=this.state;
-				let newpage=page+1;
-				let newChooseShixunListshixun_list=ChooseShixunListshixun_list;
-				let url='/paths/'+pathId+'/choose_subject_shixun.json?page='+newpage
-				if(search!="" && search!=undefined){
-					url+="&search="+search;
-				}
-				if(type!=0){
-					url+="&type="+type;
-				}
-				axios.get(url).then((result)=>{
-					if(result.status===200){
-						let list =result.data.shixun_list;
-
-						for(var i=0; i<list.length; i++){
-							newChooseShixunListshixun_list.push(list[i])
-						}
-						this.setState({
-							ChooseShixunList:result.data,
-							hometypepvisible:false,
-							type:type,
-							search:search,
-							page:newpage,
-							ChooseShixunListshixun_list:newChooseShixunListshixun_list
-						})
-					}
-				}).catch((error)=>{
-					console.log(error);
-				})
 
+       if(ChooseShixunList.shixun_list.length===0){
+       	return
+			 }else{
+				 // console.log("到达底部");
+				 this.setState({
+					 hometypepvisible:true
+				 })
+				 let pathId=this.props.pathid;
+				 let {search,page,type,ChooseShixunListshixun_list}=this.state;
+				 let newpage=page+1;
+				 let newChooseShixunListshixun_list=ChooseShixunListshixun_list;
+				 let url='/paths/'+pathId+'/choose_subject_shixun.json?page='+newpage
+				 if(search!="" && search!=undefined){
+					 url+="&search="+search;
+				 }
+				 if(type!=0){
+					 url+="&type="+type;
+				 }
+				 axios.get(url).then((result)=>{
+					 if(result.status===200){
+						 let list =result.data.shixun_list;
+
+						 for(var i=0; i<list.length; i++){
+							 newChooseShixunListshixun_list.push(list[i])
+						 }
+						 this.setState({
+							 ChooseShixunList:result.data,
+							 hometypepvisible:false,
+							 type:type,
+							 search:search,
+							 page:newpage,
+							 ChooseShixunListshixun_list:newChooseShixunListshixun_list
+						 })
+					 }
+				 }).catch((error)=>{
+					 console.log(error);
+				 })
+
+			 }
 
     }
 
diff --git a/public/react/src/modules/paths/PathDetail/DetailCardsEditAndEdit.js b/public/react/src/modules/paths/PathDetail/DetailCardsEditAndEdit.js
index 719994fdf..b6c7e53b2 100644
--- a/public/react/src/modules/paths/PathDetail/DetailCardsEditAndEdit.js
+++ b/public/react/src/modules/paths/PathDetail/DetailCardsEditAndEdit.js
@@ -338,50 +338,59 @@ class DetailCardsEditAndEdit extends Component{
 
   contentViewScrolledit=(e)=>{
     //滑动到底判断
-
+		const {ChooseShixunList}=this.state;
     if(e.currentTarget.scrollHeight-e.currentTarget.scrollTop===e.currentTarget.clientHeight){
-      this.setState({
-        hometypepvisible:true
-      })
-      // console.log("到达底部");
 
-      let {page,type,search,ChooseShixunListshixun_list}=this.state;
+			if(ChooseShixunList.shixun_list.length===0){
+				return
+			}else{
+				this.setState({
+					hometypepvisible:true
+				})
+				// console.log("到达底部");
 
-      let newpage=page+1;
+				let {page,type,search,ChooseShixunListshixun_list}=this.state;
 
-      let pathId=this.props.pathid;
+				let newpage=page+1;
 
-      let newChooseShixunListshixun_list=ChooseShixunListshixun_list;
+				let pathId=this.props.pathid;
 
-      let url='/paths/'+pathId+'/choose_subject_shixun.json?page='+newpage
+				let newChooseShixunListshixun_list=ChooseShixunListshixun_list;
 
-      if(search!="" && search!=undefined){
-        url+="&search="+search;
-      }
+				let url='/paths/'+pathId+'/choose_subject_shixun.json?page='+newpage
 
-      if(type!=0){
-        url+="&type="+type;
-      }
-      axios.get(url).then((result)=>{
-        if(result.status===200){
+				if(search!="" && search!=undefined){
+					url+="&search="+search;
+				}
+
+				if(type!=0){
+					url+="&type="+type;
+				}
+				axios.get(url).then((result)=>{
+					if(result.status===200){
+
+						let list =result.data.shixun_list;
+
+						for(var i=0; i<list.length; i++){
+							newChooseShixunListshixun_list.push(list[i])
+						}
+						this.setState({
+							ChooseShixunList:result.data,
+							hometypepvisible:false,
+							type:type,
+							page:newpage,
+							search:search,
+							ChooseShixunListshixun_list:newChooseShixunListshixun_list
+						})
+					}
+				}).catch((error)=>{
+					console.log(error);
+				})
+
+
+			}
 
-          let list =result.data.shixun_list;
 
-          for(var i=0; i<list.length; i++){
-            newChooseShixunListshixun_list.push(list[i])
-          }
-          this.setState({
-            ChooseShixunList:result.data,
-            hometypepvisible:false,
-            type:type,
-            page:newpage,
-            search:search,
-            ChooseShixunListshixun_list:newChooseShixunListshixun_list
-          })
-        }
-      }).catch((error)=>{
-        console.log(error);
-      })
 
     }
 
diff --git a/public/react/src/modules/tpm/challengesnew/TPMevaluation.js b/public/react/src/modules/tpm/challengesnew/TPMevaluation.js
index 985a838fb..77442eec1 100644
--- a/public/react/src/modules/tpm/challengesnew/TPMevaluation.js
+++ b/public/react/src/modules/tpm/challengesnew/TPMevaluation.js
@@ -475,7 +475,10 @@ export default class TPMevaluation extends Component {
 	}
 	handpathoptionvalue=(value)=>{
 		this.setState({
-			pathoptionvalue:value
+			pathoptionvalue:value,
+			shixunfileexpectpicturepath:undefined,
+			shixunfilestandardpicturepath:undefined,
+			shixunfilepicturepath:undefined
 		})
 	}
 	showrepositoryurltip=(type)=>{
@@ -640,19 +643,20 @@ export default class TPMevaluation extends Component {
 		let id = this.props.match.params.shixunId;
 		let{checkpointId}=this.state;
 		let url = "/shixuns/"+id+"/challenges/"+checkpointId+".json";
+		let newchallenge={
+			path:shixunfilepath,
+			exec_path:shixunfilepathplay,
+			show_type:pathoptionvalue===-1?undefined:pathoptionvalue,
+			original_picture_path:pathoptionvalue===-1?undefined:shixunfileexpectpicturepath===undefined?null:shixunfileexpectpicturepath,
+			expect_picture_path:pathoptionvalue===-1?undefined:shixunfilestandardpicturepath===undefined?null:shixunfilestandardpicturepath,
+			picture_path:pathoptionvalue===-1?undefined:shixunfilepicturepath===undefined?null:shixunfilepicturepath,
+			test_set_score:newscorevalue,
+			test_set_average:markvalue,
+			web_route:web_route===null?undefined:web_route
+		}
 		axios.put(url,{
 				tab:1,
-				challenge:{
-					path:shixunfilepath,
-					exec_path:shixunfilepathplay,
-					show_type:pathoptionvalue,
-					original_picture_path:shixunfileexpectpicturepath,
-					expect_picture_path:shixunfilestandardpicturepath,
-					picture_path:shixunfilepicturepath,
-					test_set_score:newscorevalue,
-					test_set_average:markvalue,
-					web_route:web_route===null?undefined:web_route
-				},
+				challenge:newchallenge,
 				test_set:evaluationlist
 			}
 		).then((response) => {
diff --git a/public/react/src/public-path.js b/public/react/src/public-path.js
index 6cca11a1e..5ebb67817 100644
--- a/public/react/src/public-path.js
+++ b/public/react/src/public-path.js
@@ -1,6 +1,6 @@
 /*global __webpack_public_path__ */
-if (window._enableCDN && window.location.host == 'pre-newweb.educoder.net') {
-    __webpack_public_path__ = 'http://testali-cdn.educoder.net/react/build/'
-} else if (window._enableCDN && window.location.host == 'www.educoder.net') {
+if ( window.location.host == 'pre-newweb.educoder.net') {
+    __webpack_public_path__ = 'https://testali-cdn.educoder.net/react/build/'
+} else if ( window.location.host == 'www.educoder.net') {
     __webpack_public_path__ = 'https://ali-newweb.educoder.net/react/build/'
 }
\ No newline at end of file