diff --git a/app/controllers/exercises_controller.rb b/app/controllers/exercises_controller.rb
index 0bc7658c5..4319f2e4a 100644
--- a/app/controllers/exercises_controller.rb
+++ b/app/controllers/exercises_controller.rb
@@ -732,13 +732,6 @@ class ExercisesController < ApplicationController
                 ex_unified = true
                 e_time = ex_end_time
               end
-              # if exercise.end_time.blank?
-              #   e_time = ex_end_time
-              # elsif exercise.exercise_group_settings.end_time_no_null.count > 0  # 该试卷分组有结束时间为空的
-              #   e_time = exercise.exercise_group_settings.end_time_no_null.map(&:end_time).max
-              # else
-              #   e_time = ex_end_time
-              # end
 
               ex_status = set_exercise_status(Time.now,e_time)
               exercise_params = {
diff --git a/app/views/exercise_questions/_exercise_questions.json.jbuilder b/app/views/exercise_questions/_exercise_questions.json.jbuilder
index 4cdd97f3c..bfaf6b736 100644
--- a/app/views/exercise_questions/_exercise_questions.json.jbuilder
+++ b/app/views/exercise_questions/_exercise_questions.json.jbuilder
@@ -1,5 +1,4 @@
 json.question_id question.id
-# json.question_number question.question_number
 q_positon = question.question_number
 if ques_position.present?
   q_positon = ques_position
@@ -22,7 +21,7 @@ if question.question_type <= 2  #当为选择题或判断题时，只显示选
       user_answer_b = user_answer.include?(a.id)
       json.c_position (index+1) if ex_choice_random_boolean  #当选项随机时，选项位置以此为准，否则不出现
       json.choice_id a.id
-      json.choice_text a.choice_text
+      json.choice_text "#{(index+65).chr}.#{a.choice_text}"
       json.choice_position a.choice_position
       if exercise_type == 1 || exercise_type == 4  #1为教师编辑/预览 试卷或问题，2为空白试卷，即标准答案和用户答案都不显示，3为用户开始答题的显示，4为老师评阅试卷或学生在截止后查看试卷
         json.standard_boolean standard_answer_b