diff --git a/VOL.Ai/Services/AiAppService.cs b/VOL.Ai/Services/AiAppService.cs
index 0bf9f0e..41a4cbd 100644
--- a/VOL.Ai/Services/AiAppService.cs
+++ b/VOL.Ai/Services/AiAppService.cs
@@ -268,7 +268,7 @@ namespace VOL.Ai.Services
 
                     return new Grades
                     {
-                        Id =1,
+                        Id = 1,
                         Name = firstGrade.GradeName,
                         Class = allClasses
                             .Select(c => new Classes
@@ -330,7 +330,7 @@ namespace VOL.Ai.Services
             //    .ToList()
             //};
 
-            var json=  JsonConvert.SerializeObject(res);
+            var json = JsonConvert.SerializeObject(res);
 
             return res;
         }
@@ -1742,7 +1742,7 @@ namespace VOL.Ai.Services
 
             // 分页查询
             var list = await query
-                .OrderByDescending(x => x.StartTime)
+                .OrderByDescending(x => x.Id)
                 .Skip((paramDto.PageIndex - 1) * paramDto.PageSize)
                 .Take(paramDto.PageSize)
                 .Select(x => new Ai_ClassRoomRecordPageListDto