\documentclass[12pt]{article}
\begin{document}
\begin{enumerate}
\item Lorem ipsum dolor sit amet
\item .
.
.
\item Lorem ipsum dolor sit amet
\end{enumerate}
\end{document}
得出的结果为:
答案1
\documentclass[12pt]{article}
\begin{document}
\begin{enumerate}
\item Lorem ipsum dolor sit amet
\item \leavevmode\vspace{3cm}
\item Lorem ipsum dolor sit amet
\end{enumerate}
\end{document}