diff --git a/Gemfile b/Gemfile
index b8b174a6f..0473e221e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -84,6 +84,7 @@ gem 'rails-i18n', '~> 5.1'
 
 # job
 gem 'sidekiq'
+gem 'sinatra'
 
 # batch insert
 gem 'bulk_insert'
diff --git a/Gemfile.lock b/Gemfile.lock
index 86f524bc2..728bbc672 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -142,6 +142,7 @@ GEM
     multi_json (1.13.1)
     multi_xml (0.6.0)
     multipart-post (2.0.0)
+    mustermann (1.0.3)
     mysql2 (0.5.2)
     nio4r (2.3.1)
     nokogiri (1.8.4)
@@ -265,6 +266,11 @@ GEM
     simple_xlsx_reader (1.0.4)
       nokogiri
       rubyzip
+    sinatra (2.0.5)
+      mustermann (~> 1.0)
+      rack (~> 2.0)
+      rack-protection (= 2.0.5)
+      tilt (~> 2.0)
     spreadsheet (1.2.3)
       ruby-ole (>= 1.0)
     spring (2.0.2)
@@ -341,6 +347,7 @@ DEPENDENCIES
   selenium-webdriver
   sidekiq
   simple_xlsx_reader
+  sinatra
   spreadsheet
   spring
   spring-watcher-listen (~> 2.0.0)
diff --git a/app/controllers/exercise_questions_controller.rb b/app/controllers/exercise_questions_controller.rb
index b231d6af7..b852e9437 100644
--- a/app/controllers/exercise_questions_controller.rb
+++ b/app/controllers/exercise_questions_controller.rb
@@ -223,7 +223,6 @@ class ExerciseQuestionsController < ApplicationController
           end
         end
         #试卷未发布时，当标准答案存在时，可修改标准答案内容，可增删标准答案，否则只能修改标准答案，不能增删标准答案
-        st_count = 0
         @exercise_answers_array = @exercise_question.exercise_standard_answers  #问卷的全部标准答案
         if standard_answer.present?
           if @exercise_question.question_type <= 2 #选择题/判断题，标准答案为一个或多个
@@ -232,7 +231,6 @@ class ExerciseQuestionsController < ApplicationController
             old_left_standard_choices = exercise_standard_choices - common_standard_choices # 以前的差集共同的，剩余的表示需要删掉
             new_left_standard_choices = standard_answer - common_standard_choices # 传入的标准答案差集共同的，剩余的表示需要新建
             if old_left_standard_choices.count > 0
-              st_count += 1
               @exercise_answers_array.standard_by_ids(old_left_standard_choices).destroy_all
             end
             if new_left_standard_choices.count > 0  #新建标准答案
@@ -258,7 +256,6 @@ class ExerciseQuestionsController < ApplicationController
 
             #删除多余的选项
             if old_ex_answer_choice_ids.count > new_ex_answer_choice_ids.count  #有减少的填空
-              st_count += 1
               delete_ex_answer_choice_ids = old_ex_answer_choice_ids - new_ex_answer_choice_ids
               old_ex_answer.standard_by_ids(delete_ex_answer_choice_ids).destroy_all
             end
@@ -284,7 +281,6 @@ class ExerciseQuestionsController < ApplicationController
                     ex_answer_pre[n-1].update(standard_option)
                   end
                   if new_add_choice.count > 0  #表示有新增的
-                    st_count += 1
                     new_add_choice.each do |i|
                       standard_option = {
                           :exercise_question_id => @exercise_question.id,
@@ -306,7 +302,6 @@ class ExerciseQuestionsController < ApplicationController
                     ex_answer_pre[index].update(standard_option)
                   end
                   if new_delete_choice.count > 0  #表示填空题的答案有删减的
-                    st_count += 1
                     new_delete_choice.each do |d|
                       ex_answer_pre[d-1].destroy
                     end
@@ -350,18 +345,30 @@ class ExerciseQuestionsController < ApplicationController
           @exercise_question.shixun_name = shixun_name
         end
 
-        #当标准答案修改时，如有已提交的学生，需重新计算分数
-        if st_count > 0
-          ex_users_committed = @exercise.exercise_users.exercise_user_committed
-          if ex_users_committed.size > 0
-            ex_users_committed.each do |ex_user|
-              user = ex_user.user
-              objective_score = calculate_student_score(@exercise,user)[:total_score]
-              subjective_score = ex_user.subjective_score
-              total_score_subjective_score = subjective_score < 0.0 ? 0.0 : subjective_score
-              total_score = objective_score + total_score_subjective_score
-              ex_user.update_attributes(objective_score:objective_score,score:total_score)
-            end
+        #当试卷已发布时（试卷的总状态),当标准答案修改时，如有已提交的学生，需重新计算分数.
+
+        # if @exercise.exercise_status == 2
+        #   ex_users_committed = @exercise.exercise_users.exercise_user_committed
+        #   if ex_users_committed.size > 0
+        #     ex_users_committed.each do |ex_user|
+        #       user = ex_user.user
+        #       objective_score = calculate_student_score(@exercise,user)[:total_score]
+        #       subjective_score = ex_user.subjective_score
+        #       total_score_subjective_score = subjective_score < 0.0 ? 0.0 : subjective_score
+        #       total_score = objective_score + total_score_subjective_score
+        #       ex_user.update_attributes(objective_score:objective_score,score:total_score)
+        #     end
+        #   end
+        # end
+        ex_users_committed = @exercise.exercise_users.exercise_user_committed
+        if ex_users_committed.size > 0
+          ex_users_committed.each do |ex_user|
+            user = ex_user.user
+            objective_score = calculate_student_score(@exercise,user)[:total_score]
+            subjective_score = ex_user.subjective_score
+            total_score_subjective_score = subjective_score < 0.0 ? 0.0 : subjective_score
+            total_score = objective_score + total_score_subjective_score
+            ex_user.update_attributes(objective_score:objective_score,score:total_score)
           end
         end
 
@@ -587,15 +594,15 @@ class ExerciseQuestionsController < ApplicationController
     if @exercise_question.present?
       @exercise = @exercise_question.exercise
       if @exercise.blank?
-        tip_exception(404)
+        tip_exception(404,"试卷不存在")
       else
         @course = @exercise.course
         if @course.blank?
-          tip_exception(404)
+          tip_exception(404,"课堂不存在")
         end
       end
     else
-      tip_exception(404)
+      tip_exception(404,"试卷问题不存在")
     end
   end
 
diff --git a/app/controllers/files_controller.rb b/app/controllers/files_controller.rb
index 2af178e47..05a9ab841 100644
--- a/app/controllers/files_controller.rb
+++ b/app/controllers/files_controller.rb
@@ -3,7 +3,7 @@ class FilesController < ApplicationController
 
   before_action :require_login, except: %i[index]
   before_action :find_course, except: %i[public_with_course_and_project mine_with_course_and_project]
-  before_action :find_ids, only: %i[bulk_delete bulk_send bulk_move bulk_public]
+  before_action :find_ids, only: %i[bulk_delete bulk_send bulk_move bulk_public bulk_publish]
   before_action :file_validate_sort_type, only: :index
   before_action :validate_send_message_to_course_params, only: :bulk_send
   before_action :set_pagination, only: %i[index public_with_course_and_project mine_with_course_and_project]
@@ -40,6 +40,12 @@ class FilesController < ApplicationController
     @attachments = @attachments.page(@page).per(@page_size)
   end
 
+  def bulk_publish
+    return normal_status(403, "您没有权限进行操作") if current_user.course_identity(@course) >= 5
+    @course.attachments.by_ids(@attachment_ids).unpublish.update_all(is_publish: 1, publish_time: Time.now)
+    render_ok
+  end
+
   def bulk_delete
     ActiveRecord::Base.transaction do
       begin
diff --git a/app/controllers/graduation_tasks_controller.rb b/app/controllers/graduation_tasks_controller.rb
index a89a81798..545b10e11 100644
--- a/app/controllers/graduation_tasks_controller.rb
+++ b/app/controllers/graduation_tasks_controller.rb
@@ -129,7 +129,7 @@ class GraduationTasksController < ApplicationController
         if @user_course_identity >= Course::STUDENT
           tip_exception(403, "无权限操作")
         elsif complete_works == 0
-          normal_status(-1,"暂无用户提交！")
+          normal_status(-1,"暂无用户提交")
         else
           respond_to do |format|
             format.xlsx{
@@ -164,7 +164,7 @@ class GraduationTasksController < ApplicationController
       @work_count = @work_list.count
       @all_work_count = @work_list.count
       if params[:format] == "xlsx" || params[:format] == "zip"
-        normal_status(-1,"作业未发布")
+        normal_status(-1,"毕设任务未发布")
       end
     end
   end
diff --git a/app/controllers/homework_commons_controller.rb b/app/controllers/homework_commons_controller.rb
index 4cd9209f3..4474d47c8 100644
--- a/app/controllers/homework_commons_controller.rb
+++ b/app/controllers/homework_commons_controller.rb
@@ -106,7 +106,7 @@ class HomeworkCommonsController < ApplicationController
 
     student_works = @homework.all_works
     @all_member_count = student_works.size
-    if @homework.publish_time.nil? || @homework.publish_time > Time.now
+    if @homework.publish_time.blank? || (@homework.publish_time > Time.now)
       @student_works = []
       if params[:format] == "xlsx" || params[:format] == "zip"
         normal_status(-1,"作业未发布")
@@ -250,7 +250,7 @@ class HomeworkCommonsController < ApplicationController
       challenge_settings = @homework.homework_challenge_settings
       myshixuns.find_each(batch_size: 100) do |myshixun|
         work = student_works.select{|work| work.user_id == myshixun.user_id}.first
-        if work && myshixun && (work.update_time.nil? || work.update_time < myshixun.updated_at)
+        if work && myshixun && (work.update_time.nil? || work.update_time < myshixun.games.pluck(:updated_at).max)
           games = myshixun.games.where(challenge_id: challenge_settings.pluck(:challenge_id))
           HomeworksService.new.update_myshixun_work_score work, myshixun, games, @homework, challenge_settings
         end
@@ -271,7 +271,7 @@ class HomeworkCommonsController < ApplicationController
     myshixun = Myshixun.find_by(shixun_id: params[:shixun_id], user_id: current_user.id)
     ActiveRecord::Base.transaction do
       begin
-        if work && myshixun && (work.update_time.nil? || work.update_time < myshixun.updated_at)
+        if work && myshixun && (work.update_time.nil? || work.update_time < myshixun.games.pluck(:updated_at).max)
           challenge_settings = @homework.homework_challenge_settings
           games = myshixun.games.where(challenge_id: challenge_settings.pluck(:challenge_id))
           HomeworksService.new.update_myshixun_work_score work, myshixun, games, @homework, challenge_settings
diff --git a/app/controllers/myshixuns_controller.rb b/app/controllers/myshixuns_controller.rb
index 89d76c16c..87823ce21 100644
--- a/app/controllers/myshixuns_controller.rb
+++ b/app/controllers/myshixuns_controller.rb
@@ -18,7 +18,7 @@ class MyshixunsController < ApplicationController
   # REDO等删除是否可以做成异步
   # 前段需要按照操作过程提示
   def reset_my_game
-    unless (current_user.admin? || current_user.id == @myshixun.user_id)
+    unless current_user.admin?
       tip_exception("403", "")
     end
 
diff --git a/app/controllers/subjects_controller.rb b/app/controllers/subjects_controller.rb
index c73fec500..bb7059af6 100644
--- a/app/controllers/subjects_controller.rb
+++ b/app/controllers/subjects_controller.rb
@@ -81,6 +81,9 @@ class SubjectsController < ApplicationController
     @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
+
+    # 访问数变更
+    @subject.increment!(:visits)
   end
 
   def create
diff --git a/app/services/users/subject_service.rb b/app/services/users/subject_service.rb
index 7e3eaaa81..745b7cce2 100644
--- a/app/services/users/subject_service.rb
+++ b/app/services/users/subject_service.rb
@@ -14,7 +14,7 @@ class Users::SubjectService
     subjects = category_scope_subjects
     subjects = user_policy_filter(subjects)
 
-    custom_sort(subjects, :updated_at, params[:sort_direction])
+    custom_sort(subjects.distinct, :updated_at, params[:sort_direction])
   end
 
   private
diff --git a/config/routes.rb b/config/routes.rb
index a27dde1f3..d9a6b41a4 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,5 +1,8 @@
 Rails.application.routes.draw do
 
+  require 'sidekiq/web'
+  mount Sidekiq::Web => '/sidekiq'
+
   resources :edu_settings
   scope '/api' do
     get 'home/index'
@@ -253,6 +256,7 @@ Rails.application.routes.draw do
         get :mine_with_course_and_project
         post :import
         post :upload
+        put :bulk_publish
       end
       member do
         get :histories
diff --git a/db/migrate/20190703072611_add_old_exercise_tiankong_choice_id.rb b/db/migrate/20190703072611_add_old_exercise_tiankong_choice_id.rb
new file mode 100644
index 000000000..9ad1429e2
--- /dev/null
+++ b/db/migrate/20190703072611_add_old_exercise_tiankong_choice_id.rb
@@ -0,0 +1,23 @@
+class AddOldExerciseTiankongChoiceId < ActiveRecord::Migration[5.2]
+
+  def up
+    #类型为3 的问题答案及标准答案更新exercise_choice_id 为1，即表示第一空
+    exercise_question_ids = ExerciseQuestion.where("question_type = 3").pluck(:id)
+    ExerciseAnswer.where(exercise_question_id: exercise_question_ids,exercise_choice_id: nil).update_all(exercise_choice_id:1)
+    ExerciseStandardAnswer.where(exercise_question_id: exercise_question_ids,exercise_choice_id: nil).update_all(exercise_choice_id:1)
+
+    exercise_bank_question_ids = ExerciseBankQuestion.where("question_type =3").pluck(:id)
+    ExerciseBankStandardAnswer.where(exercise_bank_question_id: exercise_bank_question_ids).update_all(exercise_bank_choice_id:1)
+  end
+
+  def down
+    #类型为3 的问题答案及标准答案更新exercise_choice_id 为1，即表示第一空
+    exercise_question_ids = ExerciseQuestion.where("question_type = 3").pluck(:id)
+    ExerciseAnswer.where(exercise_question_id: exercise_question_ids,exercise_choice_id: 1).update_all(exercise_choice_id:nil)
+    ExerciseStandardAnswer.where(exercise_question_id: exercise_question_ids,exercise_choice_id: 1).update_all(exercise_choice_id:nil)
+
+    exercise_bank_question_ids = ExerciseBankQuestion.where("question_type =3").pluck(:id)
+    ExerciseBankStandardAnswer.where(exercise_bank_question_id: exercise_bank_question_ids).update_all(exercise_bank_choice_id:nil)
+  end
+
+end