diff --git a/pages/总复习2023t1.md b/pages/总复习2023t1.md
index b2737ec..877902d 100644
--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@@ -2690,6 +2690,7 @@
 					- ((648c27ed-e09d-4f1a-8100-7ae2dfff1c8e))
 						- ((648c27f9-f944-4bf8-9e44-cb3e9048d286))
 				- DONE Ch2 Random Variable
+				  collapsed:: true
 				  :LOGBOOK:
 				  CLOCK: [2023-06-16 Fri 17:15:12]--[2023-06-16 Fri 21:34:48] =>  04:19:36
 				  :END: