diff --git a/app/controllers/files_controller.rb b/app/controllers/files_controller.rb
index 2bdd88566..a916f5351 100644
--- a/app/controllers/files_controller.rb
+++ b/app/controllers/files_controller.rb
@@ -263,12 +263,7 @@ class FilesController < ApplicationController
 
     return normal_status(-2, "该课程下没有id为 #{params[:id]}的资源") if @file.nil?
     return normal_status(403, "您没有权限进行该操作") if @user != @file.author && !@user.teacher_of_course?(@course) && !@file.public?
-    @is_pdf = false
-    file_content_type = @file.content_type
-    file_ext_type = File.extname(@file.filename).strip.downcase[1..-1]
-    if (file_content_type.present? && file_content_type.downcase.include?("pdf")) || (file_ext_type.present? && file_ext_type.include?("pdf"))
-      @is_pdf = true
-    end
+
     @attachment_histories = @file.attachment_histories
   end
 
diff --git a/app/controllers/shixuns_controller.rb b/app/controllers/shixuns_controller.rb
index 74942446e..c9b56bb98 100644
--- a/app/controllers/shixuns_controller.rb
+++ b/app/controllers/shixuns_controller.rb
@@ -555,23 +555,23 @@ class ShixunsController < ApplicationController
 
 			# 判断实训是否全为选择题
 			is_choice_type = (min_challenges.size == min_challenges.select{|challenge| challenge.last == 1}.count)
-			# if !is_choice_type
-			# 	commit = GitService.commits(repo_path: @repo_path).try(:first)
-			# 	uid_logger("First comit########{commit}")
-			# 	tip_exception("开启实战前请先在版本库中提交代码") if commit.blank?
-			# 	commit_id = commit["id"]
-			# end
+			if !is_choice_type
+				commit = GitService.commits(repo_path: @repo_path).try(:first)
+				uid_logger("First comit########{commit}")
+				tip_exception("开启实战前请先在版本库中提交代码") if commit.blank?
+				commit_id = commit["id"]
+			end
 
 			# 如果该实训是金课中的实训，则将当前用户加入到当期开课的课堂
-			if StageShixun.exists?(shixun_id: @shixun.id, subject_id: Subject.where(excellent: 1))
-				subject = Subject.where(excellent: 1, id: StageShixun.where(shixun_id: @shixun.id).pluck(:subject_id)).take
-				course = subject.courses.where("start_date is not null and start_date <= '#{Date.today}' and end_date is not null and end_date >= '#{Date.today}'").take
-				if course.present? && !CourseMember.exists?(course_id: course.id, user_id: current_user.id)
-					# 为了不影响后续操作，用create而不是create!
-					CourseMember.create(course_id: course.id, user_id: current_user.id, role: 4)
-					CourseAddStudentCreateWorksJob.perform_later(course.id, [current_user.id])
-				end
-			end
+			# if StageShixun.exists?(shixun_id: @shixun.id, subject_id: Subject.where(excellent: 1))
+			# 	subject = Subject.where(excellent: 1, id: StageShixun.where(shixun_id: @shixun.id).pluck(:subject_id)).take
+			# 	course = subject.courses.where("start_date is not null and start_date <= '#{Date.today}' and end_date is not null and end_date >= '#{Date.today}'").take
+			# 	if course.present? && !CourseMember.exists?(course_id: course.id, user_id: current_user.id)
+			# 		# 为了不影响后续操作，用create而不是create!
+			# 		CourseMember.create(course_id: course.id, user_id: current_user.id, role: 4)
+			# 		CourseAddStudentCreateWorksJob.perform_later(course.id, [current_user.id])
+			# 	end
+			# end
 
 			ActiveRecord::Base.transaction do
 				begin
diff --git a/app/controllers/subjects_controller.rb b/app/controllers/subjects_controller.rb
index 6a381b258..55f8722a2 100644
--- a/app/controllers/subjects_controller.rb
+++ b/app/controllers/subjects_controller.rb
@@ -86,6 +86,16 @@ class SubjectsController < ApplicationController
     @shixuns = @subject.shixuns.published.pluck(:id)
     @courses = @subject.courses if @subject.excellent
 
+    @members = @subject.subject_members.includes(:user)
+    shixuns = @subject.shixuns.published.pluck(:id)
+    challenge_ids = Challenge.where(shixun_id: shixuns).pluck(:id)
+    # 实训路径中的所有实训标签
+    @tags = ChallengeTag.where(challenge_id: challenge_ids).pluck(:name).uniq
+    # 用户获取的实训标签
+    # @user_tags = @subject.shixuns.map(&:user_tags_name).flatten.uniq
+    @user_tags = user_shixun_tags challenge_ids, @user.id
+    @my_subject_progress = @subject.my_subject_progress
+
     # 访问数变更
     @subject.increment!(:visits)
   end
diff --git a/app/controllers/users/base_controller.rb b/app/controllers/users/base_controller.rb
index 706b77802..eb6b98048 100644
--- a/app/controllers/users/base_controller.rb
+++ b/app/controllers/users/base_controller.rb
@@ -26,6 +26,12 @@ class Users::BaseController < ApplicationController
     render_forbidden
   end
 
+  def require_auth_teacher!
+    return if current_user.admin_or_business? || observed_user.certification_teacher?
+
+    render_forbidden
+  end
+
   def page_value
     params[:page].to_i <= 0 ? 1 : params[:page].to_i
   end
diff --git a/app/controllers/users/video_auths_controller.rb b/app/controllers/users/video_auths_controller.rb
index d7950f873..0eec4dffb 100644
--- a/app/controllers/users/video_auths_controller.rb
+++ b/app/controllers/users/video_auths_controller.rb
@@ -1,5 +1,5 @@
 class Users::VideoAuthsController < Users::BaseController
-  before_action :private_user_resources!
+  before_action :private_user_resources!, :require_auth_teacher!
 
   def create
     result = Videos::CreateAuthService.call(observed_user, create_params)
diff --git a/app/controllers/users/videos_controller.rb b/app/controllers/users/videos_controller.rb
index e4dffec23..1df726c0c 100644
--- a/app/controllers/users/videos_controller.rb
+++ b/app/controllers/users/videos_controller.rb
@@ -1,5 +1,5 @@
 class Users::VideosController < Users::BaseController
-  before_action :private_user_resources!
+  before_action :private_user_resources!, :require_auth_teacher!
 
   helper_method :current_video
 
diff --git a/app/models/attachment.rb b/app/models/attachment.rb
index bdd749108..3a512278a 100644
--- a/app/models/attachment.rb
+++ b/app/models/attachment.rb
@@ -115,4 +115,15 @@ class Attachment < ApplicationRecord
     end
   end
 
+  #判断是否为pdf文件
+  def is_pdf?
+    is_pdf = false
+    file_content_type = content_type
+    file_ext_type = File.extname(filename).strip.downcase[1..-1]
+    if (file_content_type.present? && file_content_type.downcase.include?("pdf")) || (file_ext_type.present? && file_ext_type.include?("pdf"))
+      is_pdf = true
+    end
+    is_pdf
+  end
+
 end
diff --git a/app/services/duplicate_course_service.rb b/app/services/duplicate_course_service.rb
index 9d61984db..27ae2f784 100644
--- a/app/services/duplicate_course_service.rb
+++ b/app/services/duplicate_course_service.rb
@@ -11,7 +11,7 @@ class DuplicateCourseService < ApplicationService
       @course = copy_course!
 
       copy_course_modules!
-
+      Rails.logger.info("###########second_category_list#{@second_category_list}")
       join_course!
 
       copy_homework_commons!
@@ -36,9 +36,17 @@ class DuplicateCourseService < ApplicationService
   end
 
   def copy_course_modules!
+    @second_category_list = {}
     origin_course.course_modules.each do |course_module|
       attrs = course_module.as_json(only: %i[module_type position hidden module_name])
-      CourseModule.create!(attrs.merge(course_id: course.id))
+      new_course_module = CourseModule.create!(attrs.merge(course_id: course.id))
+      # 复制子目录
+      course_module.course_second_categories.each do |second_category|
+        category_attr =  second_category.as_json(only: %i[category_type name position])
+        new_second_category =
+            CourseSecondCategory.create!(category_attr.merge(course_id: course.id, course_module_id: new_course_module.id))
+        @second_category_list[second_category.id] = new_second_category.id
+      end
     end
   end
 
@@ -50,7 +58,10 @@ class DuplicateCourseService < ApplicationService
     origin_course.homework_commons.where(homework_type: %i[normal group practice]).find_each do |origin_homework|
       homework_attrs = origin_homework.as_json(only: %i[name description homework_type homework_bank_id reference_answer])
 
-      homework = HomeworkCommon.create!(homework_attrs.merge(user_id: user.id, course_id: course.id))
+      course_second_category_id = @second_category_list[origin_homework.course_second_category_id]
+
+      homework = HomeworkCommon.create!(homework_attrs.merge(user_id: user.id, course_id: course.id,
+                                                             course_second_category_id:course_second_category_id))
 
       origin_homework.attachments.find_each do |origin_attachment|
         attachment = origin_attachment.copy
@@ -71,6 +82,7 @@ class DuplicateCourseService < ApplicationService
         HomeworksService.new.create_shixun_homework_cha_setting(homework, origin_homework.shixuns.first)
       end
 
+
       origin_homework.increment!(:quotes)
       origin_homework.homework_bank.increment!(:quotes) if origin_homework.homework_bank
     end
@@ -138,9 +150,9 @@ class DuplicateCourseService < ApplicationService
       attachment.copy_from = origin_attachment.copy_from || origin_attachment.id
       attachment.is_publish = 0
       attachment.attachtype ||= 4
+      attachment.course_second_category_id = @second_category_list[origin_attachment.course_second_category_id]
 
       attachment.save!
-
       origin_course.update_quotes(attachment)
     end
   end
diff --git a/app/views/attachment_histories/_attachment_history.json.jbuilder b/app/views/attachment_histories/_attachment_history.json.jbuilder
index 37b8b95c1..65ca1e887 100644
--- a/app/views/attachment_histories/_attachment_history.json.jbuilder
+++ b/app/views/attachment_histories/_attachment_history.json.jbuilder
@@ -7,3 +7,4 @@ json.quotes attachment.quotes_count
 json.downloads_count attachment.downloads_count
 json.created_on attachment.created_on
 json.url attachment_path(attachment, type: 'history')
+json.is_pdf attachment.is_pdf?
diff --git a/app/views/attachments/_attachment_small.json.jbuilder b/app/views/attachments/_attachment_small.json.jbuilder
index d9a976bde..97cbee120 100644
--- a/app/views/attachments/_attachment_small.json.jbuilder
+++ b/app/views/attachments/_attachment_small.json.jbuilder
@@ -2,4 +2,5 @@ json.id attachment.id
 json.title attachment.title
 json.filesize number_to_human_size(attachment.filesize)
 json.url download_url(attachment)
-json.created_on attachment.created_on
\ No newline at end of file
+json.created_on attachment.created_on
+json.is_pdf attachment.is_pdf?
\ No newline at end of file
diff --git a/app/views/files/histories.json.jbuilder b/app/views/files/histories.json.jbuilder
index 9dfec4fd4..7039752e7 100644
--- a/app/views/files/histories.json.jbuilder
+++ b/app/views/files/histories.json.jbuilder
@@ -1,3 +1,3 @@
-json.is_pdf @is_pdf
+
 json.partial! 'attachments/attachment_small', attachment: @file
 json.partial! "attachment_histories/list", attachment_histories: @attachment_histories
diff --git a/app/views/subjects/show.json.jbuilder b/app/views/subjects/show.json.jbuilder
index bf179b86d..93fa105a6 100644
--- a/app/views/subjects/show.json.jbuilder
+++ b/app/views/subjects/show.json.jbuilder
@@ -22,4 +22,26 @@ if @subject.excellent
     json.course_identity @user.course_identity(course)
     json.course_status subject_course_status course
   end
+end
+
+
+json.members @members do |member|
+  json.partial! 'subject_member', locals: { user: member.user }
+  json.role member.role
+end
+
+# 技能标签
+json.tags @tags do |tag|
+  unless tag.blank?
+    json.tag_name tag
+    json.status @user_tags.include?(tag)
+  end
+end
+
+# 我的进展
+json.progress do
+  json.my_score @subject.my_subject_score
+  json.all_score @subject.all_score
+  json.learned @subject.my_subject_progress
+  json.time  @subject.my_consume_time
 end
\ No newline at end of file
diff --git a/lib/tasks/excellent_course_exercise.rake b/lib/tasks/excellent_course_exercise.rake
index c68cf6348..9f1484027 100644
--- a/lib/tasks/excellent_course_exercise.rake
+++ b/lib/tasks/excellent_course_exercise.rake
@@ -16,7 +16,16 @@ namespace :excellent_course_exercise do
     exercise_1884 = course.exercises.find_by(id: 1884)
     members_1.each_with_index do |member, index|
       if index < 821
-
+        exercise_1884.exercise_questions.where.not(question_type: 5).each do |question|
+          answer_option = {
+            :user_id => current_user.id,
+            :exercise_question_id => @exercise_question.id,
+            :exercise_choice_id => choice_id,
+            :answer_text => ""
+          }
+          ex_a = ExerciseAnswer.new(answer_option)
+          ex_a.save!
+        end
       else
 
       end