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\usepackage[UTF8, fontset = none, heading = true]{ctex}
\setCJKmainfont[BoldFont=黑体,ItalicFont=楷体]{华文中宋}
\usepackage{amssymb,amsmath,amsfonts,amsthm,mathrsfs,dsfont,graphicx}
\usepackage{ifthen,indentfirst,enumerate,color,lastpage}
\usepackage{tikz}
\usepackage{multicol}
\usepackage{makecell}
\usepackage{longtable}
\usepackage{diagbox}
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\usepackage{fancyhdr}
\fancyhf{}
\fancyhead[LO]{学号\blank{50} \ 姓名\blank{80}}
\chead{\papername}
\rhead{--\ \thepage\ of \pageref{LastPage} \ --}
\pagestyle{fancy}
\ctexset{section={
name={},
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}}
\CTEXsetup[format={\bfseries\raggedright}]{section}
\usetikzlibrary{arrows,calc,intersections,patterns,decorations.pathreplacing,3d,angles,quotes,positioning,shapes.geometric}

\renewcommand{\baselinestretch}{1.5}
\newtheorem{defi}{定义~}
\newtheorem{eg}{例~}
\newtheorem{ex}{~}
\newtheorem{rem}{注~}
\newtheorem{thm}{定理~}
\newtheorem{coro}{推论~}
\newtheorem{axiom}{公理~}
\newtheorem{prop}{性质~}
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\newcommand{\bracket}[1]{(\hbox to #1pt{})}
\newcommand{\onech}[4]{\par\begin{tabular}{p{.9\linewidth}}
A.~#1\\
B.~#2\\
C.~#3\\
D.~#4
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A.~#1& B.~#2\\
C.~#3& D.~#4
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(1)~#1& (2)~#2\\
(3)~#3& (4)~#4
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A.~#1 &B.~#2& C.~#3& D.~#4
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(1)~#1 &(2)~#2& (3)~#3& (4)~#4
\end{tabular}}


\newcommand{\papername}{标题替换}

\begin{document}
\begin{center}
% {\bf\large 高三上学期\papername}
{\bf\large \papername}
\end{center}


\section{填空题}

\begin{enumerate}[1.]
待替换1
\end{enumerate}


\section{选择题}

\begin{enumerate}[1.]
待替换2
\end{enumerate}

\section{解答题}

\begin{enumerate}[1.]
待替换3
\end{enumerate}

\end{document}