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如何在考试类中挂接 \fillin 命令以在最后漂亮地打印答案

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如何在考试类中挂接 \fillin 命令以在最后漂亮地打印答案

这是一个最小的例子。

\documentclass[a4paper, addpoints]{exam}
\usepackage{etoolbox}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% the accumulated answers text
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\newcommand{\answertext}{}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% hook to fillin command
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\makeatletter
\renewcommand\fillin[1][{}]{%
% copy the contents of fillin definition from the exam class
% we try to append the content to the \answertext string
\xappto\answertext{\thequestion,#1\space}%
\def\fillin@ans{#1}%
\fillin@relay
} 
\makeatother


\begin{document}

\section{Questions}
\begin{questions}
\question First Quesiton \fillin[Answers1] is the color of my true love’s hair.
\question Second Question \fillin[Answers2] is the \fillin[Answers3].
\question Third Question  \fillin[Answers4] is OK.
\end{questions}


\section{Answers}
\ifprintanswers
    % do nothing
\else
    % this print the answertext
    \answertext
\fi

\end{document}

我必须挂接到\fillin命令来累积答案，并将它们放入全局变量中\answertext。

但结果如下所示：

填写答案显示不好

我希望看到如下内容：

1,Answers1 2,Answers2;Answers3 3,Answers4

我的意思是它应该只显示一次问题号“2”。因为一个问题可能有很多填空答案。另外，我需要一种方法来计算总的填空数。（也就是说，一个填空位置有 2 分，例如）

答案1

我添加了新的计数器fillno和lastquesno，用于计算填空的数量，并测试当前填空是否属于包含前一个填空的同一问题。我还更改了您对 的新\fillin定义

\makeatletter
\renewcommand\fillin[1][{}]{%
% copy the contents of fillin definition from the exam class
% we try to append the content to the \answertext string
%\xappto\answertext{\thequestion,#1\space}%
\appendanswertext{\thequestion}{#1}%
\setcounter{lastquesno}{\value{question}}%
\addtocounter{fillno}{1}%
\def\fillin@ans{#1}%
\fillin@relay
} 
\makeatother

\newcommand{\appendanswertext}[2]{%
  % #1 is \thequestion, #2 is the answer
  \ifnum \value{lastquesno} = #1\relax
    % It's another fillin for the same question:
    \xappto\answertext{;#2}%
  \else
    % First fillin for this question:
    \xappto\answertext{\space #1,#2}
  \fi
}

There were \thefillno\ fillins.我还在您调用 后立即添加了该行 \answertext。现在它似乎可以执行您的请求。

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