\newcommand{\maru}[1]{{\ooalign{% \hfil\hbox{$\bigcirc$}\hfil\crcr% \hfil\hbox{#1}\hfil}}}\maru{2}

色々方法があるみたい． \renewcommand{\baselinestretch}{1.1}\baselineskip = 22pt

\usepackage{indentfirst}