diff --git a/工具v2/database_tools.py b/工具v2/database_tools.py
index 085b4e9f..6934bcb0 100644
--- a/工具v2/database_tools.py
+++ b/工具v2/database_tools.py
@@ -1329,6 +1329,21 @@ def getUnit(n): # 返回0-9的数字对应的单元名
     unitlist = ["暂无对应","第一单元","第二单元","第三单元","第四单元","第五单元","第六单元","第七单元","第八单元","第九单元"]
     if 0<=n<=9:
         return unitlist[n]
+    
+def ExtractProblemIDs(paperdict,pro_dict):#从备课组材料的每一张讲义的dict(paperdict)中提取题号
+    output = []
+    for key in paperdict.keys():
+        if type(paperdict[key]) == list:
+            suslist = paperdict[key]
+            flag = True
+            for id in suslist:
+                if not id in pro_dict:
+                    flag = False
+                    break
+            if flag:
+                for id in suslist:
+                    output.append(id)
+    return(output)
 
 if __name__ == "__main__":
     print("数据库工具, import用.")
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