diff --git a/app/controllers/exercise_controller.rb b/app/controllers/exercise_controller.rb
index 781ea50cd..6699702aa 100644
--- a/app/controllers/exercise_controller.rb
+++ b/app/controllers/exercise_controller.rb
@@ -41,7 +41,6 @@ class ExerciseController < ApplicationController
       if !@is_teacher && !has_click_exercise?(@exercise.id, User.current.id)
         eu = ExerciseUser.create(:user_id => User.current.id, :exercise_id => @exercise.id, :start_at => Time.now, :status => false)
       end
-
       # @percent = get_percent(@exercise,User.current)
       exercise_questions = @exercise.exercise_questions
       @exercise_questions = paginateHelper exercise_questions,5 #分页