diff --git a/app/services/homeworks_service.rb b/app/services/homeworks_service.rb
index ab149403d..59bd5dad4 100644
--- a/app/services/homeworks_service.rb
+++ b/app/services/homeworks_service.rb
@@ -328,7 +328,11 @@ class HomeworksService
       work.late_penalty = work.work_status == 2 ? homework.late_penalty : 0
       work.commit_time = myshixun.created_at > setting_time.publish_time ? setting_time.publish_time : myshixun.created_at
       work.myshixun_id = myshixun.id
-      work.update_time = myshixun.updated_at
+      work.update_time = if myshixun_endtime.present?
+                           myshixun_endtime > homework_end_or_late_time ? homework_end_or_late_time : myshixun_endtime
+                         else
+                           myshixun.updated_at > homework_end_or_late_time ? homework_end_or_late_time : myshixun.updated_at
+                         end
 
       work.final_score = final_score
       score = work.final_score + work.eff_score - work.late_penalty
diff --git a/lib/tasks/public_course.rake b/lib/tasks/public_course.rake
index 24fa3e844..ff50a4e28 100644
--- a/lib/tasks/public_course.rake
+++ b/lib/tasks/public_course.rake
@@ -42,7 +42,7 @@ namespace :public_course do
         begin
           CourseMember.create!(course_id: course_id, user_id: user_id, role: 4)
         rescue Exception => e
-          Rails.logger()
+          Rails.logger(e.message)
         end
       end
     end
@@ -68,12 +68,15 @@ namespace :public_course do
     case type.to_i
     when 1
       # 讨论区
-      created_on = random_time start_time, end_time
-      puts created_on
       messages = Message.where(board_id: course.boards)
       messages.each do |message|
+        created_on = random_time start_time, end_time
+        puts created_on
         message.update_columns(created_on: created_on, updated_on: created_on)
-        MessageDetail.where(message_id: message.id).update_all(created_at: created_on, updated_at: created_on)
+        MessageDetail.where(message_id: message.id).each do |detail|
+          rand_created_on = random_time start_time, end_time
+          detail.update_columns(created_at: rand_created_on, updated_at: rand_created_on)
+        end
       end
     when 2
       # 作业
@@ -134,5 +137,4 @@ namespace :public_course do
     end
     large_time
   end
-end
-
+end
\ No newline at end of file
diff --git a/public/react/src/App.js b/public/react/src/App.js
index 5b57428c3..9621fdc18 100644
--- a/public/react/src/App.js
+++ b/public/react/src/App.js
@@ -306,7 +306,7 @@ class App extends Component {
 					<Trialapplicationreview  {...this.props} {...this.state}></Trialapplicationreview>
 				  <Addcourses {...this.props} {...this.state}/>
 				  <AccountProfile {...this.props} {...this.state}/>
-          {/*<Certifiedprofessional {...this.props} {...this.state}/>*/}
+          <Certifiedprofessional {...this.props} {...this.state}/>
 					<Router>
 						<Switch>
 
diff --git a/public/react/src/modules/courses/exercise/Studentshavecompletedthelist.js b/public/react/src/modules/courses/exercise/Studentshavecompletedthelist.js
index 145a544fb..33fd0a748 100644
--- a/public/react/src/modules/courses/exercise/Studentshavecompletedthelist.js
+++ b/public/react/src/modules/courses/exercise/Studentshavecompletedthelist.js
@@ -2369,7 +2369,7 @@ class Studentshavecompletedthelist extends Component {
 				})
 			}
 
-			this.Searchdatasys(e, this.state.course_groupyslstwo, this.state.review, this.state.checkedValuesineinfo, this.state.searchtext, this.state.page,this.state.limit)
+			this.Searchdatasys(e, this.state.course_groupyslstwo, this.state.review, this.state.checkedValuesineinfo, this.state.searchtext, this.state.page,this.state.limit);
 		}
 
 		if (e === "score") {
@@ -2387,7 +2387,7 @@ class Studentshavecompletedthelist extends Component {
 
 			}
 
-			this.Searchdatasys(e, this.state.course_groupyslstwo, this.state.review, this.state.checkedValuesineinfo, this.state.searchtext, null, null)
+			this.Searchdatasys(e, this.state.course_groupyslstwo, this.state.review, this.state.checkedValuesineinfo, this.state.searchtext, this.state.page,this.state.limit);
 		}
 
 		if (e === "student_id") {
@@ -2404,7 +2404,7 @@ class Studentshavecompletedthelist extends Component {
 				})
 			}
 
-			this.Searchdatasys(e, this.state.course_groupyslstwo, this.state.review, this.state.checkedValuesineinfo, this.state.searchtext, null, null)
+			this.Searchdatasys(e, this.state.course_groupyslstwo, this.state.review, this.state.checkedValuesineinfo, this.state.searchtext, this.state.page,this.state.limit);
 		}
 	}
 	setExerciseReviewAndAnswer = () => {