1. 照片双栏格式插入
\begin{figure}
\includegraphics[width=\linewidth]{qian.jpg}
\caption{Example of a figure caption.} \label{qian.jpg}
\end{figure}2. 照片单栏格式插入
\begin{figure*}
\includegraphics[width=\linewidth]{qian.jpg}
\caption{Example of a figure caption.} \label{qian.jpg}
\end{figure*}