I imported a PDF file that I had never experienced before.
Specify the following in the preamble.
\usepackage[dvipdfmx]{graphicx}
The lines described in the \ begin {document} part.
\section{次の集合について、共通部分$A\cap B$、和集合$A\cup B$を求めなさい。}
\begin{figure}[htbp]
\start{center}
\includegraphics[width=70mm]{2020-09-10_12h23_53.pdf}
\caption{U,A,Bの集合図}
\end{center}
\end{figure}
Output by above
