diff --git a/latex-talk.pdf b/latex-talk.pdf
index 5bf3ec0..a691fa7 100644
Binary files a/latex-talk.pdf and b/latex-talk.pdf differ
diff --git a/latex-talk.tex b/latex-talk.tex
index 07ec4a2..8066040 100644
--- a/latex-talk.tex
+++ b/latex-talk.tex
@@ -116,7 +116,7 @@
 % - Keep it simple, no one is interested in your street address.
 
 \date[图书馆专题培训讲座] % (optional)
-{\today}
+{2015年4月23日}
 
 \subject{LaTeX, paper, ThuThesis}
 
@@ -646,7 +646,7 @@ \subsection{\LaTeX{}常用命令}
     \item \verb|\命令|\hspace{2em}
     \verb|{\songti 中国人民解放军}| ~$\Rightarrow$ {\songti 中国人民解放军}
   \item \verb|\命令[可选参数]{必选参数}|\\
-\verb|section[精简标题]}{这个题目实在太长了放到目录里面不太好看|\\
+\verb|section[精简标题]{这个题目实在太长了放到目录里面不太好看}|\\
 $\Rightarrow$ {\heiti 1.1 \hspace{1em} \songti 这个题目实在太长了放到目录里面不太好看}
   \end{itemize}
 \item 环境