Latex 导言区

% 导言区
\documentclass{article} %book,report,letter
\usepackage{ctex} %中文环境需要
\usepackage{graphicx} %插图
\graphicspath{{figure/}}
%语法：\includegraphics[<选项>]{<文件名>}
\usepackage{amsmath} %数学公式宏包
\usepackage{pifont}
\newcommand\degree{^\circ} %右上角小圆圈
\newcommand{\adots}{\mathinner{\mkern2mu%
		\raisebox{0.1em}{.}\mkern2mu\raisebox{0.4em}{.}%
		\mkern2mu\raisebox{0.7em}{.}\mkern1mu}} %数学矩阵省略号

\title{\heiti }
\author{\kaishu }
\date{\today}