diff --git a/题库0.3/Problems.json b/题库0.3/Problems.json
index 372c45ab..9f52f4f6 100644
--- a/题库0.3/Problems.json
+++ b/题库0.3/Problems.json
@@ -581267,7 +581267,7 @@
     },
     "021447": {
         "id": "021447",
-        "content": "平面内一条射线绕着其端点先逆时针旋转$60^{\\circ}$, 再顺时针旋转$450^{\\circ}$, 已原射线为始边, 所得射线为终边所形成的角为\\blank{50}.",
+        "content": "平面内一条射线绕着其端点先逆时针旋转$60^{\\circ}$, 再顺时针旋转$450^{\\circ}$, 以原射线为始边, 所得射线为终边所形成的角为\\blank{50}.",
         "objs": [],
         "tags": [
             "第三单元"
@@ -581286,7 +581286,8 @@
         ],
         "origin": "2025届高一下校本作业",
         "edit": [
-            "20230209\t王伟叶"
+            "20230209\t王伟叶",
+            "20240131\t王伟叶"
         ],
         "same": [],
         "related": [],