diff --git a/题库0.3/BasicKnowledge.json b/题库0.3/BasicKnowledge.json
index 0f86b43e..866f7052 100644
--- a/题库0.3/BasicKnowledge.json
+++ b/题库0.3/BasicKnowledge.json
@@ -117,7 +117,7 @@
             "K0104003B",
             "K0104006B"
         ],
-        "content": "几个结论:\\\\\n(1) $A \\cap \\overline {A}=$\\blank{20}, $A \\cup \\overline {A}=$\\blank{20}, $\\overline{\\overline {A}}=$\\blank{20}.\\\\\n(3) $\\overline{A \\cap B}=$\\blank{40}, $\\overline{A \\cup B}=$\\blank{40}."
+        "content": "几个结论:\\\\\n(1) $A \\cap \\overline {A}=$\\blank{20}, $A \\cup \\overline {A}=$\\blank{20}, $\\overline{\\overline {A}}=$\\blank{20}.\\\\\n(2) $\\overline{A \\cap B}=$\\blank{40}, $\\overline{A \\cup B}=$\\blank{40}."
     },
     "B00017": {
         "lesson": "K0105",