科普答题

addons/exam/library/ExamService.php

@@ -118,7 +118,7 @@ class ExamService
         // 合并材料题子题目
         $questions = QuestionModel::mergeMaterialQuestions($questions);
         if ($hidden) {
-            return hidden_list_keys($questions, ['answer', 'explain', 'origin_answer']);
+            return hidden_list_keys($questions, ['answer', 'origin_answer']);
         }
         return $questions;
     }