重新编号考试类别中的 \part

Question

我只想对一个部分重新编号，而不是所有部分\parts重新编号。

我在手册中找到了这一点：

\renewcommand{\thepartno}{\Roman{partno}}

但这使得所有的编号都\part成为罗马数字。

我在手册中找不到哪里可以对某个部分重新编号。

\documentclass[a4paper]{exam}
\usepackage{amssymb}
\usepackage{amsmath}
\usepackage{paralist}
\usepackage{enumerate}
\renewcommand{\thepartno}{\Roman{partno}}

\begin{document}
\smallskip
\begin{questions}
\question Which of the following is continuous at $x = 0$ ?
\begin{center}
    \begin{parts}
    \part $f\left(x\right) = \vert x \vert$
    \part $f\left(x\right) = e^{x}$
    \part $f\left(x\right) = \ln\left(e^{x} - 1 \right)$
    \end{parts}
\end{center}
\begin{oneparchoices}
\choice I only
\choice II only
\choice I and II only
\choice II and III only
\choice none
\end{oneparchoices}

\begin{solution}
\end{solution}
\vspace{\stretch{2}}
\end{questions}
\end{document}

Answer 1

您可以使用

\renewcommand{\thepartno}{\Roman{partno}}

在环境内部parts保持本地更改：

\documentclass[a4paper]{exam}

\begin{document}

\begin{questions}
\question Which of the following is continuous at $x = 0$ ?
    \begin{parts}
\renewcommand{\thepartno}{\Roman{partno}}
    \part $f\left(x\right) = \vert x \vert$
    \part $f\left(x\right) = e^{x}$
    \part $f\left(x\right) = \ln\left(e^{x} - 1 \right)$
    \end{parts}
\question Which of the following is continuous at $x = 0$ ?
    \begin{parts}
    \part $f\left(x\right) = \vert x \vert$
    \part $f\left(x\right) = e^{x}$
    \part $f\left(x\right) = \ln\left(e^{x} - 1 \right)$
    \end{parts}
\end{questions}


\end{document}

附注：您可以使用\label,\ref机制来避免手动编号：

\documentclass[a4paper]{exam}

\begin{document}

\begin{questions}
\question Which of the following is continuous at $x = 0$ ?
    \begin{parts}
\renewcommand{\thepartno}{\Roman{partno}}
    \part\label{abs} $f\left(x\right) = \vert x \vert$
    \part\label{exp} $f\left(x\right) = e^{x}$
    \part\label{log} $f\left(x\right) = \ln\left(e^{x} - 1 \right)$
    \end{parts}
\begin{oneparchoices}
\choice \ref{abs} only
\choice \ref{exp} only
\choice \ref{abs} and~\ref{exp} only
\choice \ref{exp} and~\ref{log} only
\choice none
\end{oneparchoices}
\end{questions}

\end{document}