diff --git a/app/controllers/concerns/git_helper.rb b/app/controllers/concerns/git_helper.rb
index f6724a654..445d67087 100644
--- a/app/controllers/concerns/git_helper.rb
+++ b/app/controllers/concerns/git_helper.rb
@@ -9,11 +9,13 @@ module GitHelper
   # 版本库文件内容，带转码
   def git_fle_content(repo_path, path)
     begin
-      content = GitService.file_content(repo_path: repo_path, path: path)["content"]
-      logger.info("@@@@@@@@@@@@@@@@@@#{content}")
+      content = GitService.file_content(repo_path: repo_path, path: path)
 
+      logger.info("@@@@@@@@@@@@@@@@@@#{content}")
       decode_content = nil
       if content.present?
+        content = content["content"]   #6.24 -hs 这个为新增，因为当实训题里含有选择题时，这里会报错,undefined method `[]' for nil:NilClass
+
         content = Base64.decode64(content)
         cd = CharDet.detect(content)
         logger.info "encoding: #{cd['encoding']} confidence: #{cd['confidence']}"
@@ -27,6 +29,7 @@ module GitHelper
       end
 
       decode_content
+
     rescue Exception => e
       uid_logger_error(e.message)
       raise Educoder::TipException.new("文档内容获取异常")
diff --git a/app/controllers/exercises_controller.rb b/app/controllers/exercises_controller.rb
index c3e8c4e5d..3e4dea5e3 100644
--- a/app/controllers/exercises_controller.rb
+++ b/app/controllers/exercises_controller.rb
@@ -201,16 +201,16 @@ class ExercisesController < ApplicationController
   def common_header
     ActiveRecord::Base.transaction do
       begin
+        @user_left_time = nil
         if @user_course_identity > Course::ASSISTANT_PROFESSOR
           @is_teacher_or = 0
           @user_exercise_answer = @exercise.check_user_answer_status(current_user)
           @user_commit_counts = 0
-          get_exercise_left_time(@exercise,current_user)
+          @user_left_time = get_exercise_left_time(@exercise,current_user)
         else
           @is_teacher_or = 1
           @user_exercise_answer = 3  #教师页面
           @user_commit_counts = @exercise.exercise_users.where(commit_status:1).count   #已提交的用户数
-          @user_left_time = nil
         end
         @ex_status = @exercise.get_exercise_status(current_user.id)
 
@@ -1022,8 +1022,6 @@ class ExercisesController < ApplicationController
           end
         end
 
-        get_exercise_left_time(@exercise,@exercise_user_current)
-
         # ex_time = @exercise.time
         # if ex_time > 0
         #   time_mill = ex_time * 60   #转为秒
@@ -1038,10 +1036,12 @@ class ExercisesController < ApplicationController
 
         @t_user_exercise_status = @exercise.get_exercise_status(current_user.id)
 
+        @user_left_time = nil
         if @user_course_identity < Course::STUDENT || (@t_user_exercise_status == 3) ||
             (@exercise_user_current.present? && @exercise_user_current.commit_status == 1)
           @user_exercise_status = 1  #当前用户为老师/试卷已截止/试卷已提交不可编辑
         else
+          @user_left_time = get_exercise_left_time(@exercise,current_user)
           @user_exercise_status = 0  #可编辑
         end
 
diff --git a/app/controllers/gits_controller.rb b/app/controllers/gits_controller.rb
index 60a551e7b..c3fa30270 100644
--- a/app/controllers/gits_controller.rb
+++ b/app/controllers/gits_controller.rb
@@ -16,7 +16,8 @@ class GitsController < ApplicationController
       username_password = Base64.decode64(request.env["HTTP_AUTHORIZATION"].split(" ")[1])
       input_username = username_password.split(":")[0].strip()
       input_password = username_password.split(":")[1].strip()
-      uid_logger("git start auth: input_username is #{input_username}")
+      uid_logger("git start auth: input_username is 55#{input_username}55")
+      uid_logger("git start auth: password is 66#{input_password}66")
 
       # Git 超级权限用户
       if input_username.strip == gituser.strip && input_password.strip == gitpassword.strip
@@ -27,7 +28,7 @@ class GitsController < ApplicationController
 
         # 如果用户名密码错误
         if !system_user.check_password?(input_password)
-          uid_logger_error("git start: password is wrong")
+          uid_logger_error("git start: password is wrong#77#{input_password}77")
           result = false
         else
           git_url = params["url"]
diff --git a/app/helpers/exercises_helper.rb b/app/helpers/exercises_helper.rb
index b734d9685..285dbb37e 100644
--- a/app/helpers/exercises_helper.rb
+++ b/app/helpers/exercises_helper.rb
@@ -413,43 +413,41 @@ module ExercisesHelper
           score2 += 0.0
         end
       elsif q.question_type == 5   #实训题时，主观题这里不评分
-        if answers_content.present?
-          q.exercise_shixun_challenges.each do |exercise_cha|
-            game = Game.user_games(user.id,exercise_cha.challenge_id).first  #当前用户的关卡
-            if game.present?
-              exercise_cha_score = 0.0
-              answer_status = 0
-              if game.status == 2 && game.final_score >= 0
-                exercise_cha_score = exercise_cha.question_score #每一关卡的得分
-                answer_status = 1
-              end
-              ex_shixun_answer_content = answers_content.where(exercise_shixun_challenge_id: exercise_cha.id)
-              if ex_shixun_answer_content.blank?  #把关卡的答案存入试卷的实训里
-                cha_path = challenge_path exercise_cha.challenge.path
-                game_challenge = game.game_codes.search_challenge_path(cha_path).first
-                if game_challenge.present?
-                  game_code = game_challenge
-                  code = game_code.try(:new_code)
-                else
-                  code = git_fle_content(exercise_cha.shixun.repo_path,cha_path)
-                end
-                sx_option = {
-                    :exercise_question_id => q.id,
-                    :exercise_shixun_challenge_id => exercise_cha.id,
-                    :user_id => user.id,
-                    :score => exercise_cha_score,
-                    :answer_text => code,
-                    :status => answer_status
-                }
-                ExerciseShixunAnswer.create(sx_option)
+        q.exercise_shixun_challenges.each do |exercise_cha|
+          game = Game.user_games(user.id,exercise_cha.challenge_id)&.first  #当前用户的关卡
+          if game.present?
+            exercise_cha_score = 0.0
+            answer_status = 0
+            if game.status == 2 && game.final_score >= 0
+              exercise_cha_score = exercise_cha.question_score #每一关卡的得分
+              answer_status = 1
+            end
+            ex_shixun_answer_content = answers_content&.where(exercise_shixun_challenge_id: exercise_cha.id)
+            if ex_shixun_answer_content.blank?  #把关卡的答案存入试卷的实训里
+              cha_path = challenge_path exercise_cha.challenge.path
+              game_challenge = game.game_codes.search_challenge_path(cha_path).first
+              if game_challenge.present?
+                game_code = game_challenge
+                code = game_code.try(:new_code)
               else
-                ex_shixun_answer_content.first.update_column('score',exercise_cha_score)
+                code = git_fle_content(exercise_cha.shixun.repo_path,cha_path)
               end
-              score5 += exercise_cha_score
+              sx_option = {
+                  :exercise_question_id => q.id,
+                  :exercise_shixun_challenge_id => exercise_cha.id,
+                  :user_id => user.id,
+                  :score => exercise_cha_score,
+                  :answer_text => code,
+                  :status => answer_status
+              }
+              ExerciseShixunAnswer.create(sx_option)
+            else
+              ex_shixun_answer_content.first.update_column('score',exercise_cha_score)
             end
+            score5 += exercise_cha_score
+          else
+            score5 += 0.0
           end
-        else
-          score5 += 0.0
         end
       end
       user_scores = answers_content.present? ? answers_content.score_reviewed.pluck(:score).sum : 0.0
@@ -681,9 +679,11 @@ module ExercisesHelper
     result
   end
 
-  def get_exercise_left_time(exercise,exercise_user)
+  def get_exercise_left_time(exercise,user)
     ex_time = exercise.time
+    user_left_time = nil
     if ex_time > 0
+      exercise_user = exercise.exercise_users.find_by(user_id:user.id)
       time_mill = ex_time * 60   #转为秒
       exercise_end_time = exercise.end_time.present? ? exercise.end_time.to_i : 0
       exercise_user_start = exercise_user.present? ? exercise_user.start_at.to_i : 0
@@ -691,9 +691,9 @@ module ExercisesHelper
         time_mill = exercise_end_time - exercise_user_start   #如果开始答题时间加试卷的限时长大于试卷的截止时间，则以试卷的截止时间到开始答题时间为试卷的限时
       end
       exercise_user_left_time = Time.now.to_i - exercise_user_start   #用户已回答的时间
-      @user_left_time = (time_mill < exercise_user_left_time) ? nil : (time_mill - exercise_user_left_time)   #当前用户对试卷的回答剩余时间
+      user_left_time = (time_mill < exercise_user_left_time) ? nil : (time_mill - exercise_user_left_time)   #当前用户对试卷的回答剩余时间
     end
-    @user_left_time
+    user_left_time
   end
 
   #实训题学生代码的行数
diff --git a/app/helpers/export_helper.rb b/app/helpers/export_helper.rb
index 918995bef..af883131a 100644
--- a/app/helpers/export_helper.rb
+++ b/app/helpers/export_helper.rb
@@ -35,7 +35,7 @@ module ExportHelper
       else
         head_cells_add = []
       end
-      normal_head_b_cells = %w(最终成绩 提交时间 更新时间)
+      normal_head_b_cells = %w(最终成绩 提交时间 更新时间 评语)
       @work_head_cells = (head_cells_format + group_cells + normal_head_cells + head_cells_add + allow_late_cell + normal_head_b_cells).reject(&:blank?)
       works.each_with_index do |w, index|
         w_user = w.user
@@ -85,8 +85,21 @@ module ExportHelper
         w_15 = w.work_score.nil? ? "未评分" : w.work_score.round(1)
         w_16 = w.commit_time ? format_time(w.commit_time) : "--"
         w_17 = w.update_time ? format_time(w.update_time) : "--"
+        teacher_comments = w.student_works_scores
+        if teacher_comments.present?
+          w_18 = ""
+          teacher_comments.each do |t|
+            user_name = t.user.real_name
+            user_time = format_time(t.updated_at)
+            user_score = t.score
+            user_comment = t.comment
+            w_18 = w_18 + ("教师:" + user_name + "\n" + "时间:" + user_time.to_s + "\n" + "分数:" + user_score.to_s + "分" + "\n" + "评语:" + user_comment + "\n\n")
+          end
+        else
+          w_18 = "--"
+        end
 
-        row_cells_column = [w_1,w_2,w_3,w_3_1,w_4,w_5,w_6,w_7,w_8,w_9,w_10,w_11,w_12,w_13,w_14,w_15,w_16,w_17]
+        row_cells_column = [w_1,w_2,w_3,w_3_1,w_4,w_5,w_6,w_7,w_8,w_9,w_10,w_11,w_12,w_13,w_14,w_15,w_16,w_17,w_18]
         row_cells_column = row_cells_column.reject(&:blank?)
         @work_cells_column.push(row_cells_column)
       end
@@ -102,7 +115,7 @@ module ExportHelper
       if allow_late_boolean  #允许迟交
         eff_score_cell.push("迟交扣分")
       end
-      shixun_time_cells = %w(最终成绩 更新时间 提交耗时)
+      shixun_time_cells = %w(最终成绩 更新时间 提交耗时 评语)
       @work_head_cells = (head_cells_format + shixun_head_cells + eff_score_cell + shixun_time_cells).reject(&:blank?)
       works.each_with_index do |w, index|
         myshixun = w.try(:myshixun)
@@ -143,7 +156,20 @@ module ExportHelper
         w_15 = w.work_score.nil? ? "--" : w.work_score.round(1)
         w_16 = w.update_time ? format_time(w.update_time) : "--"  "更新时间"
         w_17 = w.cost_time
-        row_cells_column = [w_1,w_2,w_3,w_3_1,w_4,w_5,w_6,w_7,w_8,w_9,w_10,w_11,w_12,w_13,w_14,w_15,w_16,w_17]
+        teacher_comments = w.student_works_scores
+        if teacher_comments.present?
+          w_18 = ""
+          teacher_comments.each do |t|
+            user_name = t.user.real_name
+            user_time = format_time(t.updated_at)
+            user_score = t.score
+            user_comment = t.comment
+            w_18 = w_18 + ("教师:" + user_name + "\n" + "时间:" + user_time.to_s + "\n" + "分数:" + user_score.to_s + "分" + "\n" + "评语:" + user_comment + "\n\n")
+          end
+        else
+          w_18 = "--"
+        end
+        row_cells_column = [w_1,w_2,w_3,w_3_1,w_4,w_5,w_6,w_7,w_8,w_9,w_10,w_11,w_12,w_13,w_14,w_15,w_16,w_17,w_18]
         row_cells_column = row_cells_column.reject(&:blank?)
         @work_cells_column.push(row_cells_column)
       end
diff --git a/app/views/homework_commons/works_list.xlsx.axlsx b/app/views/homework_commons/works_list.xlsx.axlsx
index 3809c6264..aab3ac057 100644
--- a/app/views/homework_commons/works_list.xlsx.axlsx
+++ b/app/views/homework_commons/works_list.xlsx.axlsx
@@ -1,5 +1,6 @@
 
 wb = xlsx_package.workbook
+# wb.use_autowidth = false
 wb.styles do |s|
   sz_all = s.add_style :border => { :style => :thin, :color =>"000000" },:alignment => {:horizontal => :center}
   blue_cell = s.add_style :bg_color => "FAEBDC", :sz => 10,:height => 20,:b => true, :border => { :style => :thin, :color =>"000000" },:alignment => {:horizontal => :center}
@@ -8,7 +9,7 @@ wb.styles do |s|
     sheet.add_row table_columns, :style => blue_cell
     if task_users.count > 0
       task_users.each do |user|
-        sheet.add_row user, :style => sz_all
+        sheet.add_row user, :height => 20,:style => sz_all
       end  #each_widh_index
     end
     sheet.column_widths *([20]*sheet.column_info.count)
diff --git a/lib/gitcheck/myshixun_update.txt b/lib/gitcheck/myshixun_update.txt
new file mode 100644
index 000000000..e69de29bb
diff --git a/lib/gitcheck/readme_test.txt b/lib/gitcheck/readme_test.txt
new file mode 100644
index 000000000..03f757f18
--- /dev/null
+++ b/lib/gitcheck/readme_test.txt
@@ -0,0 +1,51 @@
+# 新版Git测试说明
+统一：
+参考实训：http://47.96.87.25:48080/shixuns/ca9fvobr/repository
+请求方式：POST
+参数{repo_path: "educoder/ca9fvobr.git"}
+公共方法：
+['add_repository', 'fork_repository', 'delete_repository', 'file_tree', 'update_file',
+ 'file_content', 'commits']
+
+1、仓库目录接口
+    测试方法：模拟1000个用户同时去访问接口，访问方式
+    http://121.199.19.206:9000/api/file_tree
+    参数：
+    {repo_path: "educoder/ca9fvobr.git", path: ''} // 如：{path: 'step1'}
+
+2、创建版本库
+    访问地址：http://121.199.19.206:9000/api/add_repository
+    参数：
+    {repo_path: 比如："Hjqreturn/aaass1.git"}
+
+3、fork版本库
+   http://121.199.19.206:9000/api/fork_repository
+   参数：
+   {repo_path: 'Hjqreturn/aaass1.git', fork_repository_path: 'educoder/ca9fvobr.git'}
+   说明：fork_repository_path是源项目的repo_path, repo_path是新项目的
+
+
+4、更新文件
+    测试方法：
+    1、更新同一个文件，并发量可以不用很大，可以用同一个用户并发10-100
+    2、更新不同的文件：可以依据创建的版本库去更新
+    访问地址：http://121.199.19.206:9000/api/update_file
+    参数：
+    {repo_path: "educoder/ca9fvobr.git",
+                                   file_path: 'step1/main.py',
+                                   message: 'commit by test',
+                                   content: 'afdjadsjfj1111',
+                                   author_name: 'guange',
+                                   author_email: '8863824@gmil.com'}
+
+5、获取文件内容
+    访问地址：http://121.199.19.206:9000/api/file_content
+    参数：
+    {repo_path: "educoder/ca9fvobr.git", file_path: 'step1/main.py',}
+
+6、获取提交记录
+    访问地址：http://121.199.19.206:9000/api/commits
+    参数：
+    {repo_path: 比如："educoder/ca9fvobr.git"}
+
+
diff --git a/lib/gitcheck/shixun_update.txt b/lib/gitcheck/shixun_update.txt
new file mode 100644
index 000000000..e69de29bb
diff --git a/lib/tasks/git_check.rake b/lib/tasks/git_check.rake
new file mode 100644
index 000000000..64f8be91b
--- /dev/null
+++ b/lib/tasks/git_check.rake
@@ -0,0 +1,16 @@
+namespace :git do
+  desc "检测是否TPM是否需要更新"
+  task :shixun_check_update => :environment do
+
+  end
+
+  desc "检测版本库是否有异常"
+  task :myshixuns_check_update => :environment do
+
+  end
+
+
+  task :check => :environment do
+
+  end
+end