diff --git a/app/controllers/managements_controller.rb b/app/controllers/managements_controller.rb
index d946c12b..cc896ef2 100644
--- a/app/controllers/managements_controller.rb
+++ b/app/controllers/managements_controller.rb
@@ -2360,6 +2360,14 @@ end
     end
   end
 
+  # 实践课程的金课设置
+  def excellent_subject_setting
+    if params[:subject_id]
+      subject = Subject.find params[:subject_id]
+      subject.update_attributes(:excellent => !subject.excellent)
+    end
+  end
+
   # 已发布实训路径首页显示
   def subject_homepage_show
     if params[:subject_id]
diff --git a/app/models/subject.rb b/app/models/subject.rb
index 819d446c..77db603a 100644
--- a/app/models/subject.rb
+++ b/app/models/subject.rb
@@ -10,7 +10,7 @@ class Subject < ActiveRecord::Base
   belongs_to :major
   # score_count 只能适合在首页使用
   attr_accessible :description, :name, :status, :visits, :user_id, :course_list_id, :major_id, :learning_notes, :introduction,
-                  :homepage_show, :score_count, :publish_time, :updated_at
+                  :homepage_show, :score_count, :publish_time, :updated_at, :excellent
 
   has_many :stages, :dependent => :destroy, :order => "stages.position ASC"
   has_many :stage_shixuns, :dependent => :destroy
diff --git a/app/views/competitions/_gq_second_code_competition.html.erb b/app/views/competitions/_gq_second_code_competition.html.erb
index bc54e485..1af1cf52 100644
--- a/app/views/competitions/_gq_second_code_competition.html.erb
+++ b/app/views/competitions/_gq_second_code_competition.html.erb
@@ -73,6 +73,21 @@
       link_url: 'https://keras.io/layers/about-keras-layers/'
     }]
   ]
+  extra_data = [
+    {
+      name: 'C++项目',
+      description: "本项目的paddle/fluid/operators/optimizers目录中包含了常见的优化器（如，Momentum，Adam等等）的c++实现。",
+      task: '标注../fluid/operators/optimizers/目录下的所有代码文件',
+      link_name: '官方，优化器',
+      link_url: 'https://www.paddlepaddle.org.cn/documentation/docs/zh/1.5/api_guides/low_level/optimizer.html'
+    },{
+      name: 'Python项目',
+      description: "本项目的python/paddle/fluid/layers/nn.py中包含了神经网络中大量常见层和操作符的python实现，如fc、conv、gru等等。",
+      task: '标注../paddle/fluid/layers/nn.py代码文件',
+      link_name: '官方，nn',
+      link_url: 'https://www.paddlepaddle.org.cn/documentation/docs/zh/1.5/api_cn/layers_cn/nn_cn.html'
+    }
+  ]
 %>
 
 <% @competition.competition_stages.includes(:competition_stage_sections).each_with_index do |stage, i| %>
@@ -97,9 +112,9 @@
         标注说明：每个小组选择一种编程语言的题目，针对标注任务中指定的标注模块，要求对代码模块、模块中的代码文件， 以及文件中的函数必须进行标注，关键代码块、代码行及关键变量等由参赛者自由选择进行标注。 正式赛第一阶段的比赛在标注阶段就开放查看所有人的标注，请大家根据个人理解，写出自己的风格。我们将综合考虑标注的原创性、准确性、 完整性和多样性等不同的维度对标注质量进行评分。<%= challenge_description_extra[i] %>
       </p>
 
-      <ul class="mt30">
-        <% first_section.competition_entries.each_with_index do |entry, j| %>
-          <% row_data = data[i][j] %>
+      <ul class="mt30 clearfix">
+        <% first_section.competition_entries.limit(3).each_with_index do |entry, j| %>
+          <% row_data = data.dig(i, j) %>
           <li class="challenge_box">
             <p class="challenge_b_t"><%= row_data[:name] || entry.name %></p>
             <p class="enter_btn mb40 clearfix">
@@ -135,6 +150,51 @@
           </li>
         <% end %>
       </ul>
+
+      <% if index == 4 %>
+        <p class="break_word font-18 challenge_describe" style="margin-top: 20px;">
+          飞桨（PaddlePaddle）由百度公司开发，是目前国内唯一功能完备的端到端开源深度学习平台，集深度学习训练和预测框架、模型库、工具组件、服务平台为一体，其兼具灵活和效率的开发机制、工业级应用效果的模型、超大规模并行深度学习能力、推理引擎一体化设计以及系统化的服务支持，致力于让深度学习技术的创新与应用更简单。
+        </p>
+
+        <ul class="mt30 clearfix">
+          <% first_section.competition_entries.offset(3).each_with_index do |entry, j| %>
+            <% row_data = extra_data[j] %>
+            <li class="challenge_box">
+              <p class="challenge_b_t"><%= row_data[:name] || entry.name %></p>
+              <p class="enter_btn mb40 clearfix">
+                <%
+                  is_start = Time.now > first_section.start_time
+                  competition_url = User.current.logged? ? "#{entry.url}?eid=#{User.current.id}" : "#{entry.url}"
+                  btn_url = is_start ? "#{competition_url}" : "javascript:void(0);"
+                %>
+                <a class="setNewBnt <%= is_start ? 'active' : '' %>"
+                   href="javascript:void(0);"
+                   data-url="<%= btn_url %>"><%= entry.name %></a>
+              </p>
+
+              <% if row_data.present? %>
+                <p class="challenge_b_d">项目简介</p>
+                <p class="break-word challenge_b_des" style="min-height: 80px;"><%= raw row_data[:description] %></p>
+                <p class="challenge_b_d">标注任务</p>
+                <% if index ==2 %>
+                  <p class="break-word challenge_b_des" style="color: #FC2F78;min-height: 60px"><%= row_data[:task] %></p>
+                <% else %>
+                  <p class="break-word challenge_b_des" style="color: #FC2F78;min-height: 80px"><%= row_data[:task] %></p>
+                <% end %>
+                <p class="challenge_b_d">经典算法解读：</p>
+                <ul class="clearfix algorithm">
+                  <a href="<%= row_data[:link_url] %>" target="_blank"><%= row_data[:link_name] %></a>
+                </ul>
+                <p class="enter_btn clearfix">
+                  <a href="javascript:void(0);"
+                     data-url="<%= btn_url %>"
+                     class="setNewBnt <%= is_start ? 'active' : '' %>">点击进入代标注模块</a>
+                </p>
+              <% end %>
+            </li>
+          <% end %>
+        </ul>
+      <% end %>
     </div>
   </div>
   <% index += 1 %>
diff --git a/app/views/managements/_subject_list.html.erb b/app/views/managements/_subject_list.html.erb
index 40a3b0c4..3299af10 100644
--- a/app/views/managements/_subject_list.html.erb
+++ b/app/views/managements/_subject_list.html.erb
@@ -3,7 +3,7 @@
   <thead>
   <tr>
     <th width="9%">ID</th>
-    <th width="20%" class="edu-txt-left">实训套件名称</th>
+    <th width="18%" class="edu-txt-left">实训套件名称</th>
     <th width="6%">阶段</th>
     <th width="10%">技术体系</th>
     <th width="10%">等级体系</th>
@@ -75,6 +75,10 @@
           <input type="checkbox" name="homepage_show" <%= c_shixun.status == 2 ? "" : "disabled" %> value="<%= c_shixun.id %>" <%= c_shixun.homepage_show ? "checked" : "" %> class="ml-3 mr5 magic-checkbox" id="homepage_show_<%= c_shixun.id %>">
           <label style="top:0px;padding-left: 19px;" for="homepage_show_<%= c_shixun.id %>">首页</label>
         </span>
+        <span class="fl ml5">
+          <input type="checkbox" name="excellent" <%= c_shixun.status == 2 ? "" : "disabled" %> value="<%= c_shixun.id %>" <%= c_shixun.excellent ? "checked" : "" %> class="ml-3 mr5 magic-checkbox" id="excellent_<%= c_shixun.id %>">
+          <label style="top:0px;padding-left: 19px;" for="excellent_<%= c_shixun.id %>">金课</label>
+        </span>
       </td>
     </tr>
   <% end %>
@@ -131,7 +135,16 @@
                 type: 'post',
                 dateType: "script"
             });
-        })
+        });
+        $("input[name='excellent']").click(function(){
+            var subject_id = $(this).val();
+            $.ajax({
+                url:"<%= excellent_subject_setting_managements_path %>",
+                data: {subject_id: subject_id},
+                type: 'post',
+                dateType: "script"
+            });
+        });
     });
     function select_repertoire(subject_id, rep_id){
         $.ajax({
diff --git a/app/views/managements/excellent_subject_setting.js.erb b/app/views/managements/excellent_subject_setting.js.erb
new file mode 100644
index 00000000..e69de29b
diff --git a/config/routes.rb b/config/routes.rb
index 2524e928..22ea0bc4 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -626,6 +626,7 @@ RedmineApp::Application.routes.draw do ## oauth相关
       post 'update_shixun_code_hidden'
       get 'update_shixun_excute_time'
       post 'subject_homepage_show'
+      post 'excellent_subject_setting'
       post 'support_shixun'
       post 'add_course'
       match 'add_major',:via=>[:get,:post]
diff --git a/db/migrate/20190813070926_add_excellent_to_subject.rb b/db/migrate/20190813070926_add_excellent_to_subject.rb
new file mode 100644
index 00000000..6da01be3
--- /dev/null
+++ b/db/migrate/20190813070926_add_excellent_to_subject.rb
@@ -0,0 +1,5 @@
+class AddExcellentToSubject < ActiveRecord::Migration
+  def change
+    add_column :subjects, :excellent, :boolean, :default => false
+  end
+end
diff --git a/public/stylesheets/educoder/edu-all.css b/public/stylesheets/educoder/edu-all.css
index c9879352..6947ac54 100644
--- a/public/stylesheets/educoder/edu-all.css
+++ b/public/stylesheets/educoder/edu-all.css
@@ -669,7 +669,7 @@ a.enterLink{cursor: pointer;color: #418CCD!important;background: none!important;
 .second_code_2{min-height: 436px;}
 .second_code_3{min-height: 1460px;padding-top: 190px;box-sizing: border-box;position: relative}
 .second_code_4{min-height: 1459px;padding-top: 190px;box-sizing: border-box;position: relative}
-.second_code_5{min-height: 1464px;padding-top: 190px;box-sizing: border-box;position: relative}
+.second_code_5{min-height: 2314px;padding-top: 190px;box-sizing: border-box;position: relative}
 .second_code_6{min-height: 1060px;}
 .second_code_7{min-height: 1116px;}
 .second_code_8{min-height: 711px;}