diff --git a/工具v2/database_tools.py b/工具v2/database_tools.py
index 15684024..6dd24f5a 100644
--- a/工具v2/database_tools.py
+++ b/工具v2/database_tools.py
@@ -1087,7 +1087,7 @@ def RefineMathpix(raw_string): # 进一步修改mathpix得到的字符串
     string = re.sub(r"\$\s+\$"," ",string) #删除多余的$符号
     string = re.sub(r"([,.:;?!])\$",lambda x:x.group(1)+" $",string) #标点和$符号分开
     string = re.sub(r"\\frac",r"\\dfrac",string) #替换frac为dfrac
-    string = re.sub(r"\n(?:A\.|\(A\))([\s\S]*?)(?:B\.|\(B\))([\s\S]*?)(?:C\.|\(C\))([\s\S]*?)(?:D\.|\(D\))([\s\S]*?)\n",lambda matchobj: "\n\\fourch{%s}{%s}{%s}{%s}\n"%(matchobj.group(1).strip(),matchobj.group(2).strip(),matchobj.group(3).strip(),matchobj.group(4).strip()),string) # 选择题的选择支处理
+    string = re.sub(r"\n(?:A\.|\(A\))([\s\S]*?)(?:B\.|\(B\))([\s\S]*?)(?:C\.|\(C\))([\s\S]*?)(?:D\.|\(D\))([\s\S]*?)\n",lambda matchobj: "\n\\fourch{%s}{%s}{%s}{%s}\n"%(matchobj.group(1).strip(),matchobj.group(2).strip(),matchobj.group(3).strip(),matchobj.group(4).strip()),string+"\n\n") # 选择题的选择支处理
     string = re.sub(r"[\.;](\}\{|\}\n)",lambda matchobj: matchobj.group(1),string) #去除选择题选项最末尾的句号或分号
     string = re.sub(r"\n\s+","\n",string) #删除多余的回车
     string = re.sub(r"\\q+uad","",string) #删除\quad,\qquad等