diff --git a/app/controllers/users/question_banks_controller.rb b/app/controllers/users/question_banks_controller.rb
index 0dc4a3f3f..d0a331291 100644
--- a/app/controllers/users/question_banks_controller.rb
+++ b/app/controllers/users/question_banks_controller.rb
@@ -36,8 +36,8 @@ class Users::QuestionBanksController < Users::BaseController
           .group('graduation_tasks.gtask_bank_id').count
       when 'gtopic' then
         StudentGraduationTopic.joins(:graduation_topic)
-          .where(gtopic_banks: { gtopic_bank_id: question_bank_ids }).where('status != 0')
-          .group('gtopic_banks.gtopic_bank_id').count
+          .where(graduation_topics: { gtopic_bank_id: question_bank_ids }).where('student_graduation_topics.status = 1')
+          .group('graduation_topics.gtopic_bank_id').count
       end
   end
 
diff --git a/app/views/exercise_questions/_exercise_questions.json.jbuilder b/app/views/exercise_questions/_exercise_questions.json.jbuilder
index ca8ea7e6b..bf5e02b3c 100644
--- a/app/views/exercise_questions/_exercise_questions.json.jbuilder
+++ b/app/views/exercise_questions/_exercise_questions.json.jbuilder
@@ -49,8 +49,11 @@ if question.question_type <= 2  #当为选择题或判断题时，只显示选
     if question.question_type == 2   #返回答案的文字
       standard_text = standard_answers_array.first.to_i == 1 ? "正确" : "错误"
     else
+      if question.question_type == 1 && standard_answers_array.size == 1
+        standard_answers_array = standard_answers_array.first.to_s.split("")
+      end
       array_text_answer = []
-      standard_answers_array.each{|a| array_text_answer.push((a+64).chr)}
+      standard_answers_array.each{|a| array_text_answer.push((a.to_i+64).chr)}
       standard_text = array_text_answer.join("")
     end
     json.standard_answer_show  standard_text