Latex beamer 分左右两栏(一边文字，一边图片)并动态显示

\documentclass{beamer}
\begin{document}
\begin{frame}
\begin{columns}
\begin{column}{.5\linewidth}
\includegraphics<1>[width=\linewidth]{Figs/1.jpg}
\includegraphics<2>[width=\linewidth]{Figs/2.jpg}
\includegraphics<3>[width=\linewidth]{Figs/3.jpg}
\includegraphics<4>[width=\linewidth]{Figs/4.jpg}
\includegraphics<5>[width=\linewidth]{Figs/5.jpg}
\includegraphics<6>[width=\linewidth]{Figs/6.jpg}
\includegraphics<7>[width=\linewidth]{Figs/7.jpg}
\end{column}

\begin{column}{.5\linewidth}
\setbeamercolor{alerted text}{fg=blue}
\begin{itemize}
\item<1-|alert@1> Start with cube (generation 0)
\item<2-|alert@2> Split into 8 sub-cubes (generation 1)
\item<2-|alert@2> Select fertile sub-cubes
\item<3-|alert@3> Split fertile sub-cubes (generation 2)
\item<4-|alert@4-6> Repeat until maximum generation  reached
\item<7-|alert@7> Place stars
\end{itemize}
\end{column}
\end{columns}
\end{frame}

\end{document}