diff --git a/题库0.3/Problems.json b/题库0.3/Problems.json
index 468ea3be..fc0f361e 100644
--- a/题库0.3/Problems.json
+++ b/题库0.3/Problems.json
@@ -593487,7 +593487,7 @@
     },
     "021524": {
         "id": "021524",
-        "content": "化简: $\\dfrac{\\sin (\\pi-\\alpha) \\cos (\\dfrac{7 \\pi}{2}-\\alpha) \\cos (\\alpha-8 \\pi)}{\\sin (\\alpha-\\dfrac{5 \\pi}{2}) \\sin (-\\theta-5 \\pi)}$.",
+        "content": "化简: $\\dfrac{\\sin (\\pi-\\alpha) \\cos (\\dfrac{7 \\pi}{2}-\\alpha) \\cos (\\alpha-8 \\pi)}{\\sin (\\alpha-\\dfrac{5 \\pi}{2}) \\sin (-\\alpha-5 \\pi)}$.",
         "objs": [],
         "tags": [
             "第三单元"
@@ -593508,7 +593508,8 @@
         ],
         "origin": "2025届高一下校本作业",
         "edit": [
-            "20230209\t王伟叶"
+            "20230209\t王伟叶",
+            "20240228\t王伟叶"
         ],
         "same": [],
         "related": [],