\documentclass[cn,12pt,green,fancy,chinesefont=founder,twocolumn]{elegantbook}

\punctstyle{kaiming}

\everymath{\displaystyle}

\usepackage{mhchem}

\usepackage{pgfplots}
\pgfplotsset{compat=1.15}
\usepackage{mathrsfs}
\usetikzlibrary{arrows}
\pagestyle{empty}


\usepackage{ctex}
\usepackage{xcolor}
\usepackage{hlist}
\usepackage{enumerate}
\usepackage{ulem}
\usepackage{ifthen}
% 选择题的4个选项，使用一个命令根据选项内容长度自动排版

\newlength{\lab}
\newlength{\lb}
\newlength{\lc}
\newlength{\ld}
\newlength{\lhalf}
\newlength{\lquarter}
\newlength{\lmax}
\newcommand{\xx}[4]{%%%%%%%%%

    \settowidth{\lab}{A.~#1~~~}
    \settowidth{\lb}{B.~#2~~~}
    \settowidth{\lc}{C.~#3~~~}
    \settowidth{\ld}{D.~#4~~~}
    \ifthenelse{\lengthtest{\lab > \lb}}  {\setlength{\lmax}{\lab}}  {\setlength{\lmax}{\lb}}
    \ifthenelse{\lengthtest{\lmax < \lc}}  {\setlength{\lmax}{\lc}}  {}
    \ifthenelse{\lengthtest{\lmax < \ld}}  {\setlength{\lmax}{\ld}}  {}
    \setlength{\lhalf}{0.5\linewidth}
    \setlength{\lquarter}{0.25\linewidth}
    \ifthenelse{\lengthtest{\lmax > \lhalf}}
    {%
        \begin{hlist}[pre skip=0pt,item skip=0pt,,item offset={1.5em}, label=\Alpha {hlisti}.,pre label={}]1
            \hitem #1
            \hitem #2
            \hitem #3
            \hitem #4
        \end{hlist}
    }  %%%
    {%%
        \ifthenelse{\lengthtest{\lmax > \lquarter}} %
        {%
            \begin{hlist}[pre skip=0pt,item skip=0pt,item offset={1.5em}, label=\Alpha {hlisti}.,pre label={}]2
                \hitem #1
                \hitem #2
                \hitem #3
                \hitem #4
            \end{hlist}
        }
        {%
            \begin{hlist}[\parskip=0pt,pre skip=0pt,item skip=0pt,item offset={1.5em}, label=\Alpha {hlisti}.,pre label={}]4
                \hitem #1
                \hitem #2
                \hitem #3
                \hitem #4
            \end{hlist}
}}}

\newcommand{\tk}[2][　]{\dashuline{\makebox[\width{#1}][c]{%
                \ifanswer
                \textcolor{red}{#2}%
                \else
                \phantom{#2}%
                \fi}}}
\newcommand{\kh}[1]{\hfill【\  {{%
            \ifanswer
            {\makebox[0cm][c]{\textcolor{red}{#1}}}%
            \else
            \phantom{\makebox[0cm][c]{#1} }%
            \fi}\  】}}

\newif\ifanswer
\newcommand{\answer}[1]{\ifthenelse{\isodd{#1}}{\answertrue}{}}
\newcommand{\ty}[2]{\textcolor{blue}{\  {{%
                \ifty
                {%
                (#1·#2)}%
                \else
                \hspace*{-1em}
                \fi}\  }}}
\newif\ifty
\newcommand{\tiyuan}[1]{\ifthenelse{\isodd{#1}}{\tytrue}{}}




\setcounter{secnumdepth}{100}
\setcounter{tocdepth}{100}

% 本文档命令
\usepackage{array}
\newcommand{\ccr}[1]{\makecell{{\color{#1}\rule{1cm}{1cm}}}}

\definecolor{customcolor}{RGB}{32,178,170}
\colorlet{coverlinecolor}{customcolor}

% ################ 答案控制 ################
\answer{1}%%答案：1显示；0不显示
\tiyuan{1}%%题源：1显示；0不显示
% ################ _______ ################



\begin{document}
% \tableofcontents

% ################ 试题示例 ################
\begin{enumerate}
\item 年就开始你就看到\kh{A}
\xx{arg1}{arg2}{arg3}{arg4}
\item 年就开始你就看到\tk{你不会但是这里还是有很多东西}.
\item 年就开始你就看到\tk{A}.
\item \ty{2021}{西安一模}你我是不\kh{C}
\xx{那等我都不会}{那等我都不会}{那等我都不会}{那等我都不会}
\item 学习学习
\end{enumerate}
% ################ _______ ################

\end{document}