\documentclass[a4paper,11pt]{article}
\usepackage{ctex}
\usepackage[toc,page]{appendix}
\begin{document}
\tableofcontents
\newpage
\begin{appendices}
\renewcommand{\thesection}{Appendix~\Alph{section}}
\section{One}
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\section{Two}
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\end{appendices}
\end{document}
