diff --git a/DrissionPage/base.py b/DrissionPage/base.py
index 78ad5ca..5090b60 100644
--- a/DrissionPage/base.py
+++ b/DrissionPage/base.py
@@ -30,7 +30,7 @@ class BaseParser(object):
         return
 
     @abstractmethod
-    def ele(self, loc_or_ele, mode, timeout):
+    def ele(self, loc_or_ele, mode='single', timeout=None):
         pass
 
 
@@ -75,7 +75,7 @@ class BaseElement(BaseParser):
         return True
 
     @abstractmethod
-    def ele(self, loc_or_str, mode, timeout):
+    def ele(self, loc_or_str, mode='single', timeout=None):
         pass
 
     @abstractmethod
@@ -228,7 +228,7 @@ class BasePage(BaseParser):
     @property
     def title(self) -> Union[str, None]:
         """返回网页title"""
-        ele = self('x:/html/head/title')
+        ele = self.ele('x:/html/head/title')
         return ele.text if ele else None
 
     @property
@@ -281,7 +281,7 @@ class BasePage(BaseParser):
         pass
 
     @abstractmethod
-    def ele(self, loc_or_ele, mode, timeout):
+    def ele(self, loc_or_ele, mode='single', timeout=None):
         pass
 
     @abstractmethod
diff --git a/DrissionPage/driver_page.py b/DrissionPage/driver_page.py
index 7a7e6e8..fde34e2 100644
--- a/DrissionPage/driver_page.py
+++ b/DrissionPage/driver_page.py
@@ -318,7 +318,7 @@ class DriverPage(BasePage):
     def to_frame(self, loc_or_ele: Union[int, str, tuple, WebElement, DriverElement] = 'main') -> None:
         """跳转到frame                                                                       \n
         可接收frame序号(0开始)、id或name、查询字符串、loc元组、WebElement对象、DriverElement对象，  \n
-        传入'main'跳到最高层，传入'parent'跳到上一层                                             \n
+        传入 'main' 跳到最高层，传入 'parent' 跳到上一层                                             \n
         示例：                                                                                \n
             to_frame('tag:iframe')    - 通过传入frame的查询字符串定位                            \n
             to_frame('iframe_id')     - 通过frame的id属性定位                                   \n