LaTeX related

\documentclass[11pt, a4paper]{article}
\usepackage[space]{ctex}
\title{LaTeX快速入门}
\author{qingdujun}
\date{\today}
\begin{document}
    \maketitle
    你好！LaTeX\footnote{LaTeX是一个与Word比肩，甚至更好的工具}。
    %\includegraphics[scale=0.6]{latex.png}
    \part{part标题}
    \section{section标题}
    \subsection{subsection标题}
    \subsubsection{subsubsection标题}
    \paragraph{paragraph标题}
    \subparagraph{subparagraph标题}
    \begin{thebibliography}{99}
        \bibitem{1} 参考文献1
        \bibitem{2} 参考文献2
    \end{thebibliography}
    \begin{appendix}
        \section{附录1}
        \section{附录2}
    \end{appendix}
\end{document}