diff --git a/pages/总复习2023t1.md b/pages/总复习2023t1.md
index 3273a7f..66cf854 100644
--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@@ -1005,7 +1005,6 @@
 						  id:: 6489683b-7d47-4246-afdf-83fdb35a00f6
 							- There are attributes that apply to some (but not all) instances of an entity.
 							- The instances of a potential subclass participate in a relationship unique to that subclass.
-				- LATER designing ER diagram
 			- DONE Block 3
 			  collapsed:: true
 				- DONE DB transaction management