diff --git a/app/controllers/exercises_controller.rb b/app/controllers/exercises_controller.rb
index e1e8e226b..720f8f593 100644
--- a/app/controllers/exercises_controller.rb
+++ b/app/controllers/exercises_controller.rb
@@ -1512,7 +1512,7 @@ class ExercisesController < ApplicationController
   end
 
   def get_exercise_question_counts #获取试卷的问题数及总分数
-    exercise_questions = @exercise.exercise_questions.all
+    exercise_questions = @exercise.exercise_questions.includes(:exercise_choices,:exercise_shixun_challenges,:exercise_answers,:exercise_shixun_answers,:exercise_answer_comments,:exercise_standard_answers)
     @exercise_ques_count = exercise_questions.count # 全部的题目数
     @exercise_ques_scores = exercise_questions.pluck(:question_score).sum
 
diff --git a/app/controllers/polls_controller.rb b/app/controllers/polls_controller.rb
index 119226c87..6fbba1c3d 100644
--- a/app/controllers/polls_controller.rb
+++ b/app/controllers/polls_controller.rb
@@ -263,7 +263,6 @@ class PollsController < ApplicationController
                if g_course.map(&:to_i).sort == user_course_groups.sort   #  如果是设置为全部班级，则问卷不用分组，且问卷设定为统一设置,否则则分组设置
                  poll.poll_group_settings.destroy_all
                  poll_unified = true
-                 notify_student_ids = @course.students.pluck(:user_id)
                else
                  poll_unified = false
                  g_course.each do |i|
@@ -282,13 +281,11 @@ class PollsController < ApplicationController
                      new_poll_group.save
                    end
                  end
-
-                 notify_student_ids = @course.students.where(course_group_id: params[:group_ids]).pluck(:user_id)
+                 group_ids = params[:group_ids]
                end
             else
               poll.poll_group_settings.destroy_all
               poll_unified = true
-              notify_student_ids = @course.students.pluck(:user_id)
             end
             if poll.end_time.blank?
               e_time = ex_end_time
@@ -309,7 +306,7 @@ class PollsController < ApplicationController
             if poll.course_acts.size == 0
               poll.course_acts << CourseActivity.new(:user_id => poll.user_id,:course_id => poll.course_id)
             end
-            PollPublishNotifyJob.perform_later(poll.id, notify_student_ids)
+            PollPublishNotifyJob.perform_later(poll.id, group_ids)
           end
         end
         normal_status(0, "问卷发布成功！")
diff --git a/app/controllers/shixuns_controller.rb b/app/controllers/shixuns_controller.rb
index 3b14eea84..a319dc58a 100644
--- a/app/controllers/shixuns_controller.rb
+++ b/app/controllers/shixuns_controller.rb
@@ -488,17 +488,19 @@ class ShixunsController < ApplicationController
 			tip_show_exception(-3, "#{@shixun.opening_time.strftime('%Y-%m-%d %H:%M:%S')}")
 		end
 		current_myshixun = @shixun.current_myshixun(current_user.id)
+
+		min_challenges = @shixun.challenges.pluck(:id , :st)
+
 		if current_myshixun
+			games = current_myshixun.games
 			# 如果TPM和TPI的管卡数不相等或者关卡顺序错了，说明实训被极大的改动，需要重置
-			if current_myshixun.games.count != @shixun.challenges_count ||
-					current_myshixun.games.reorder(:challenge_id).pluck(:challenge_id) != @shixun.challenges.reorder(:id).pluck(:id)
-				uid_logger_error("7777777777777777#{current_myshixun.games.count}, #{@shixun.challenges_count}")
+			if games.size != min_challenges.size || games.map(&:challenge_id) != min_challenges.map{|challenge| challenge.first}
 				# 这里页面弹框要收到 当前用户myshixun的identifier.
 				tip_show_exception("/myshixuns/#{current_myshixun.try(:identifier)}/reset_my_game")
 			end
 
 			# 如果存在实训，则直接进入实训
-			@current_task = current_myshixun.current_task
+			@current_task = current_myshixun.current_task(games)
 		else
 			# 如果未创建关卡一定不能开启实训，否则TPI没法找到当前的关卡
 			if @shixun.challenges_count == 0
@@ -506,10 +508,10 @@ class ShixunsController < ApplicationController
 			end
 
 			# 判断实训是否全为选择题
-			is_choice_type = @shixun.is_choice_type?
+			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)
-				Rails.logger.info("First comit########{commit}")
+				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
@@ -528,13 +530,13 @@ class ShixunsController < ApplicationController
 						# fork仓库
 						project_fork(myshixun, @repo_path, current_user.login)
 
-						#rep_url = Base64.urlsafe_encode64(repo_ip_url @repo_path )
-						#uid_logger("start openGameInstance")
-						#uri = "#{cloud_bridge}/bridge/game/openGameInstance"
-						#logger.info("end openGameInstance")
-						#params = {tpiID: "#{myshixun.id}", tpmGitURL:rep_url, tpiRepoName: myshixun.repo_name.split("/").last}
-						#uid_logger("openGameInstance params is #{params}")
-						# res = interface_post uri, params, 83, "实训云平台繁忙（繁忙等级：83）"
+						rep_url = Base64.urlsafe_encode64(repo_ip_url @repo_path )
+						uid_logger("start openGameInstance")
+						uri = "#{cloud_bridge}/bridge/game/openGameInstance"
+						logger.info("end openGameInstance")
+						params = {tpiID: "#{myshixun.id}", tpmGitURL:rep_url, tpiRepoName: myshixun.repo_name.split("/").last}
+						uid_logger("openGameInstance params is #{params}")
+						interface_post uri, params, 83, "实训云平台繁忙（繁忙等级：83）"
 					end
 					# 其它创建关卡等操作
 					challenges = @shixun.challenges
@@ -565,6 +567,7 @@ class ShixunsController < ApplicationController
 			end
 		end
 	end
+
 	# gameID 及实训ID
 	# status:  0 , 1 申请过， 2，实训关卡路径未填， 3 实训标签未填, 4 实训未创建关卡
 	def publish
diff --git a/app/helpers/student_works_helper.rb b/app/helpers/student_works_helper.rb
index 17cdd41a7..a7103b4bf 100644
--- a/app/helpers/student_works_helper.rb
+++ b/app/helpers/student_works_helper.rb
@@ -145,7 +145,7 @@ module StudentWorksHelper
     else
       user_name = message_user.real_name
       user_login = message_user.login
-      image_url = url_to_avatar(score.user)
+      image_url = url_to_avatar(message_user)
     end
     {user_name: user_name, user_login: user_login, user_image_url: image_url}
   end
diff --git a/app/jobs/poll_publish_notify_job.rb b/app/jobs/poll_publish_notify_job.rb
index bc31957e0..d7ed1ae02 100644
--- a/app/jobs/poll_publish_notify_job.rb
+++ b/app/jobs/poll_publish_notify_job.rb
@@ -2,10 +2,20 @@
 class PollPublishNotifyJob < ApplicationJob
   queue_as :notify
 
-  def perform(poll_id, receiver_ids)
+  def perform(poll_id, group_ids)
     poll = Poll.find_by(id: poll_id)
     return if poll.blank?
     user = poll.user
+    course = poll.course
+
+    if group_ids.present?
+      students = course.students.where(course_group_id: group_ids)
+      subquery = course.teacher_course_groups.where(course_group_id: group_ids).select(:course_member_id)
+      teachers = course.teachers.where(id: subquery)
+    else
+      students = course.students
+      teachers = course.teachers
+    end
 
     attrs = %i[
       user_id trigger_user_id container_id container_type parent_container_id parent_container_type
@@ -19,14 +29,14 @@ class PollPublishNotifyJob < ApplicationJob
       viewed: 0, tiding_type: 'Poll'
     }
     Tiding.bulk_insert(*attrs) do |worker|
-      teacher_ids = poll.course.teachers.pluck(:user_id)
+      teacher_ids = teachers.pluck(:user_id)
       unless poll.tidings.exists?(parent_container_type: 'PollPublish', user_id: teacher_ids)
         poll.course.teachers.find_each do |teacher|
           worker.add same_attrs.merge(user_id: teacher.user_id)
         end
       end
 
-      receiver_ids.each do |user_id|
+      students.pluck(:user_id).each do |user_id|
         worker.add same_attrs.merge(user_id: user_id)
       end
     end
diff --git a/app/models/myshixun.rb b/app/models/myshixun.rb
index a1aca3253..d8f294a39 100644
--- a/app/models/myshixun.rb
+++ b/app/models/myshixun.rb
@@ -53,14 +53,12 @@ class Myshixun < ApplicationRecord
   end
 
   # 当前任务：一个实训中只可能一个未完成任务(status 0或1只会存在一条记录)
-  # status:0 可以测评的，正在测评的
+  # status:0 可以测评的; 1 正在测评的; 2评测通过的； 3未开启的
   # 如果都完成，则当前任务为最后一个任务
-  def current_task
-    games = self.games
+  def current_task games
     current_game = games.select{|game| game.status == 1 || game.status == 0}.first
     if current_game.blank?
-      current_game = Game.find_by_sql("SELECT g.* FROM games g, challenges c where g.myshixun_id=#{self.id}
-                                       and g.challenge_id = c.id and g.status = 2 order by c.position desc").first
+      current_game = games.last
     end
     current_game
   end
diff --git a/app/services/exercise_user_pdf_service.rb b/app/services/exercise_user_pdf_service.rb
index 28857dff9..8ee1d0cd4 100644
--- a/app/services/exercise_user_pdf_service.rb
+++ b/app/services/exercise_user_pdf_service.rb
@@ -47,7 +47,7 @@ class ExerciseUserPdfService
   end
 
   def load_data
-    @exercise_questions = exercise.exercise_questions
+    @exercise_questions = exercise.exercise_questions.includes(:exercise_choices,:exercise_shixun_challenges,:exercise_answers,:exercise_shixun_answers,:exercise_answer_comments,:exercise_standard_answers)
     @exercise_ques_count = @exercise_questions.count # 全部的题目数
     @exercise_ques_scores = @exercise_questions.pluck(:question_score).sum
 
@@ -81,7 +81,6 @@ class ExerciseUserPdfService
     @exercise_ques_shixun_count = exercise_ques_shixun.all.count
     @exercise_ques_shixun_scores = exercise_ques_shixun.pluck(:question_score).sum
 
-    @exercise_questions = @exercise_questions.includes(:exercise_choices,:exercise_shixun_challenges,:exercise_answers,:exercise_shixun_answers,:exercise_answer_comments,:exercise_standard_answers)
     get_each_student_exercise(exercise.id,@exercise_questions,@ex_user_user.id)
 
   end
diff --git a/app/services/git_service.rb b/app/services/git_service.rb
index 3298185bf..076f62920 100644
--- a/app/services/git_service.rb
+++ b/app/services/git_service.rb
@@ -33,7 +33,12 @@ class GitService
       res = https.request(req)
       body = res.body
       logger.info("--uri_exec: .....res is #{body}")
+
       content = JSON.parse(body)
+      if content["code"] != 0
+        raise("版本库异常")
+        logger.error("repository error: #{content['msg']}")
+      end
       #raise content["msg"] if content["code"] != 0
 
       content["data"]
diff --git a/lib/tasks/graduation_task.rake b/lib/tasks/graduation_task.rake
index 0d4dff237..58f7764d0 100644
--- a/lib/tasks/graduation_task.rake
+++ b/lib/tasks/graduation_task.rake
@@ -7,7 +7,7 @@ namespace :graduation_task do
       task.update_attributes(status: 1)
       GraduationTaskPublishNotifyJob.perform_later(task.id)
 
-      task.course_acts << CourseActivity.new(user_id: task.user_id, course_id: task.course_id) if task.course_acts.exists?
+      task.course_acts << CourseActivity.new(user_id: task.user_id, course_id: task.course_id) if !task.course_acts.exists?
     end
   end
 
diff --git a/lib/tasks/homework_publishtime.rake b/lib/tasks/homework_publishtime.rake
index 4c27f0317..7ee2a4a07 100644
--- a/lib/tasks/homework_publishtime.rake
+++ b/lib/tasks/homework_publishtime.rake
@@ -45,7 +45,7 @@ namespace :homework_publishtime do
         end
       end
 
-      homework.course_acts << CourseActivity.new(user_id: homework.user_id, course_id: homework.course_id) if homework.course_acts.exists?
+      homework.course_acts << CourseActivity.new(user_id: homework.user_id, course_id: homework.course_id) if !homework.course_acts.exists?
     end
 
     # 分组设置发布时间的作业
@@ -54,7 +54,7 @@ namespace :homework_publishtime do
       homework = homework_group.homework_common
       if homework.present?
         HomeworkPublishUpdateWorkStatusJob.perform_now([homework_group.id], homework.id)
-        HomeworkCommonPushNotifyJob.perform_later(homework.id, [homework_group.id])
+        HomeworkCommonPushNotifyJob.perform_later(homework.id, [homework_group.course_group_id])
       end
     end
     Rails.logger.info("log--------------------------------homework_publish end")
diff --git a/lib/tasks/poll_publish.rake b/lib/tasks/poll_publish.rake
index 6ced88908..8cec43565 100644
--- a/lib/tasks/poll_publish.rake
+++ b/lib/tasks/poll_publish.rake
@@ -9,39 +9,22 @@ namespace :poll_publish do
     polls = Poll.includes(:poll_users).where("publish_time is not null and polls_status = 1 and publish_time <=?",Time.now)
     polls.each do |poll|
       poll.update_attributes(:polls_status => 2)
-      course = poll.course
-      tid_str = ""
-      course.teachers.find_each do |member|
-        tid_str += "," if tid_str != ""
-        tid_str += "(#{member.user_id}, #{poll.user_id}, #{poll.id}, 'Poll', #{poll.id}, 'PollPublish', #{course.id}, 'Course', 0, 'Poll', '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}', '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}')"
-      end
       if poll.unified_setting
-        course.students.find_each do |student|
+        PollPublishNotifyJob.perform_later(poll.id, nil)
+      else
+        course = poll.course
+        teachers = course.teachers.where.not(id: course.teacher_course_groups.select(:course_member_id))
+        tid_str = ""
+        teachers.find_each do |member|
           tid_str += "," if tid_str != ""
-          tid_str += "(#{student.user_id}, #{poll.user_id}, #{poll.id}, 'Poll', #{poll.id}, 'PollPublish', #{course.id}, 'Course', 0, 'Poll', '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}', '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}')"
-        end
-      end
-      if tid_str != ""
-        tid_sql = "insert into tidings (user_id, trigger_user_id, container_id, container_type, parent_container_id, parent_container_type, belong_container_id, belong_container_type, viewed, tiding_type, created_at, updated_at) values" + tid_str
-        ActiveRecord::Base.connection.execute tid_sql
-      end
-
-      if poll.poll_users.count == 0
-        str = ""
-        course.students.find_each do |student|
-          str += "," if str != ""
-          str += "(#{student.user_id},#{poll.id}, 0, '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}', '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}')"
+          tid_str += "(#{member.user_id}, #{poll.user_id}, #{poll.id}, 'Poll', #{poll.id}, 'PollPublish', #{course.id}, 'Course', 0, 'Poll', '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}', '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}')"
         end
-
-        if str != ""
-          sql = "insert into poll_users (user_id, poll_id, commit_status, created_at, updated_at) values" + str
-          ActiveRecord::Base.connection.execute sql
+        if tid_str != ""
+          tid_sql = "insert into tidings (user_id, trigger_user_id, container_id, container_type, parent_container_id, parent_container_type, belong_container_id, belong_container_type, viewed, tiding_type, created_at, updated_at) values" + tid_str
+          ActiveRecord::Base.connection.execute tid_sql
         end
       end
-
-      if poll.course_acts.size == 0
-        poll.course_acts << CourseActivity.new(:user_id => poll.user_id,:course_id => poll.course_id)
-      end
+      poll.course_acts << CourseActivity.new(user_id: poll.user_id, course_id: poll.course_id) if !poll.course_acts.exists?
     end
 
     # 分组设置发布时间的问卷
@@ -49,19 +32,8 @@ namespace :poll_publish do
     poll_group_settings.each do |poll_group|
       poll = poll_group.poll
       if poll.present?
-        course = poll.course
         poll.update_attributes(:polls_status => 2) if poll.polls_status == 1
-
-        tid_str = ""
-        members = course.course_members.where(:course_group_id => poll_group.course_group_id)
-        members.find_each do |member|
-          tid_str += "," if tid_str != ""
-          tid_str += "(#{member.user_id},#{poll.user_id}, #{poll.id}, 'Poll', #{poll.id}, 'PollPublish', #{course.id}, 'Course', 0, 'Poll', '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}', '#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}')"
-        end
-        if tid_str != ""
-          tid_sql = "insert into tidings (user_id, trigger_user_id, container_id, container_type, parent_container_id, parent_container_type, belong_container_id, belong_container_type, viewed, tiding_type, created_at, updated_at) values" + tid_str
-          ActiveRecord::Base.connection.execute tid_sql
-        end
+        PollPublishNotifyJob.perform_later(poll.id, [poll_group.course_group_id])
       end
     end