diff --git a/工具v2/database_tools.py b/工具v2/database_tools.py
index 53c52b50..3b988fea 100644
--- a/工具v2/database_tools.py
+++ b/工具v2/database_tools.py
@@ -1326,7 +1326,7 @@ def setCopy(string): # 写入剪切板内容
 def RefineMathpix(raw_string): # 进一步修改mathpix得到的字符串
     puctuationsfulltosemi = {"　": " ","。": ". ","．": ". ","，": ", ","：": ": ","；": "; ","（": "(","）": ")","？": "? ","“": "``","”": "''", "【": "[", "】": "]"}
     replacestrings = {r"\\overparen": r"\\overset\\frown", "eqslant": "eq", r"\\vec": r"\\overrightarrow ", r"\\bar": r"\\overline", r"\\lim": r"\\displaystyle\\lim", r"\\sum":r"\\displaystyle\\sum", r"\\prod":r"\\displaystyle\\prod", r"\\mid":"|", r"\^\{\\prime\}":"'",r"e\^":r"\\mathrm{e}^",r"/\s*/":r"\\parallel "}
-    wrongrecog = {"雉":"锥","[粗秿]圆":"椭圆","投郑":"投掷","抛郑":"抛掷","范目":"范围","揷":"插","末见":"未见","末成":"未成","针角":"钝角","幕函数":"幂函数","末知":"未知","阀值":"阈值","祖[桓晅]":"祖暅","图象":"图像","末使用":"未使用","末来":"未来"}
+    wrongrecog = {"雉":"锥","[粗秿]圆":"椭圆","投郑":"投掷","抛郑":"抛掷","范目":"范围","揷":"插","末见":"未见","末成":"未成","针角":"钝角","幕函数":"幂函数","末知":"未知","阀值":"阈值","祖[桓晅]":"祖暅","图象":"图像","末使用":"未使用","末来":"未来","竟赛":"竞赛"}
     string = raw_string
     string = re.sub(r"\\left([\.\(\[|])",lambda matchobj: "" if matchobj.group(1) == "." else matchobj.group(1),string) #删去括号前的\left标记
     string = re.sub(r"\\right([\.\)\]|])",lambda matchobj: "" if matchobj.group(1) == "." else matchobj.group(1),string) #删去括号前的\right标记\
@@ -1633,6 +1633,11 @@ def getUnit(n): # 返回0-9的数字对应的单元名
     if 0<=n<=9:
         return unitlist[n]
     
+def getUnitNumber(string):
+    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 string in unitlist[1:]:
+        return unitlist.index(string)
+
 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():