diff --git a/pages/总复习2023t1.md b/pages/总复习2023t1.md
index 66cf854..8361a2b 100644
--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@@ -1006,7 +1006,6 @@
 							- 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.
 			- DONE Block 3
-			  collapsed:: true
 				- DONE DB transaction management
 					- DONE ACID (Atomicity, Consistency, Isolation, Durability): A set of properties that guarantee the reliability and integrity of database transactions.
 						- Atomicity: The property that ensures a transaction is treated as a single, indivisible unit of work. It either executes all its operations successfully or rolls back to the initial state if any operation fails.