答案1
也许以下内容就足够了:
\documentclass[margin,10pt]{res}
\usepackage{lipsum}
\begin{document}
\name{A Person}
\opening
\hspace*{-\sectionwidth}%
\makebox[\dimexpr\sectionwidth+\linewidth]{\begin{tabular}[t]{ l }
\makebox[0pt][r]{1. }First Person \\
address line 1 \\
address line 2
\end{tabular}\hspace{.25\linewidth}%
\begin{tabular}[t]{ l }
\makebox[0pt][r]{2. }Second Person \\
phone number \\
email address
\end{tabular}}
\lipsum[1]
\end{document}