请问大家tikz画的图怎么放到指定位置呢？

问题太多 - 宏包加载混乱 - 数学公式麻烦你就用 `$n_1$` 不行吗？ - 去看看这个《[到底什么是「内容与样式分离」](https://liam.page/2019/03/18/separation-of-content-and-presentation/)》，你简直就是在用 word 我勉强实现了，请你先去学习再使用 ```tex \documentclass[UTF8]{ctexart} \usepackage[a4paper,left=25mm,right=25mm,top=15mm,bottom=12mm]{geometry} \usepackage{color} \usepackage{amssymb} \usepackage{amsmath} \usepackage{tikz} \usetikzlibrary{arrows,shapes,positioning} \usetikzlibrary{decorations.markings} \tikzstyle arrowstyle=[scale=1] \tikzstyle directed=[postaction={decorate,decoration={markings, mark=at position .80 with {\arrow[arrowstyle]{stealth}}}}] \tikzstyle reverse directed=[postaction={decorate,decoration={markings, mark=at position .20 with {\arrowreversed[arrowstyle]{stealth};}}}] \setCJKfamilyfont{lmm}{lmmono10-regular.otf} \newcommand{\lmm}{\CJKfamily{lmm}} \setCJKfamilyfont{song}{simsun.ttc} \newcommand{\song}{\CJKfamily{song}} \setCJKfamilyfont{xh}{STXIHEI.TTF} \newcommand{\xh}{\CJKfamily{xh}} \setCJKfamilyfont{kt}{STKAITI.TTF} \newcommand{\kt}{\CJKfamily{kt}} \setCJKfamilyfont{ht}{simhei.ttf} \newcommand{\simhi}{\CJKfamily{ht}} \newcommand{\chuhao}{\fontsize{42pt}{\baselineskip}\selectfont} \newcommand{\xiaochuhao}{\fontsize{36pt}{\baselineskip}\selectfont} \newcommand{\yihao}{\fontsize{28pt}{\baselineskip}\selectfont} \newcommand{\erhao}{\fontsize{21pt}{\baselineskip}\selectfont} \newcommand{\xiaoerhao}{\fontsize{18pt}{\baselineskip}\selectfont} \newcommand{\sanhao}{\fontsize{15.75pt}{\baselineskip}\selectfont} \newcommand{\sihao}{\fontsize{14pt}{\baselineskip}\selectfont} \newcommand{\xiaosihao}{\fontsize{12pt}{\baselineskip}\selectfont} \newcommand{\wuhao}{\fontsize{10.5pt}{\baselineskip}\selectfont} \newcommand{\xiaowuhao}{\fontsize{9pt}{\baselineskip}\selectfont} \newcommand{\liuhao}{\fontsize{7.875pt}{\baselineskip}\selectfont} \newcommand{\qihao}{\fontsize{5.25pt}{\baselineskip}\selectfont} \linespread{1.5} \newcommand{\tabincell}[2]{\begin{tabular}{@{}#1@{}}#2\end{tabular}} %------------ \usepackage{wrapfig} %------------ \begin{document} \section*{\simhi \xiaoerhao 第一章 \quad 光的干涉单元练习} {\simhi \sanhao 一、\quad 选择题(每题{\lmm 3}分，共{\lmm 15}分)}\\ \begin{wrapfigure}{r}{6cm} \hfill\begin{tikzpicture} \coordinate[label=left: $S_{1}$] (S$_{1}$) at (0,1); \coordinate[label=right: $P$] (P) at (5,1); \coordinate[label=left: $S_{2}$] (S$_{2}$) at (0,-1); \draw[black,reverse directed](P) -- (S$_{1}$) ; \draw[black,directed] (S$_{2}$) -- (P); \draw[black](0,2.5) -- (0,-2.5) ; \coordinate[label=above: $t_{1}$] (t$_{1}$) at (1,1.3); \coordinate[label=below: $n_{1}$] (n$_{1}$) at (0.8,0.7); \draw[black] (0.8,1.3) -- (t$_{1}$) -- (1,0.7) -- (n$_{1}$) -- cycle; \coordinate[label=above: $t_{2}$] (t$_{2}$) at (1.8,0); \coordinate[label=right: $n_{2}$] (n$_{2}$) at (2.35,-0.55); \draw[black] (t$_{2}$) -- (2,0.1) -- (n$_{2}$) -- (2.15,-0.65) -- cycle; \node[above right] at (4.2,1) {r$_{1}$}; \node[below right] at (4,0.6) {r$_{2}$}; \end{tikzpicture} \end{wrapfigure} {\kt \xiaosihao $\bullet$1.如图 S$_{1}$、S$_{2}$是两个相干光源，它们到P点的距离r$_{1}$和r$_{2}$。路径S$_{1}$P垂直穿过一块厚度为t$_{1}$ ，折射率为n$_{1}$的介质板，路径S$_{2}$P垂直穿过厚度为t$_{2}$，折射率为n$_{2}$的另一介质板，其余部分可看作真空，这两条路径的光程差等于\qquad $\left[\quad \right]$\\ {\lmm A}$\centerdot$\quad (r$_{2}$+n$_{2}$t$_{2}$)\ -\ (r$_{1}$+n$_{1}$t$_{1}$)\\ {\lmm B}$\centerdot$\quad (r$_{2}$+(n$_{2}$-1)t$_{2}$)\ -\ (r$_{1}$+(n$_{1}$-1)t$_{1}$)\\ {\lmm C}$\centerdot$\quad (r$_{2}$-n$_{2}$t$_{2}$)\ -\ (r$_{1}$-n$_{1}$t$_{1}$)\\ {\lmm D}$\centerdot$\quad n$_{2}$t$_{2}$\ -\ n$_{1}$t$_{1}$\\ $\bullet$2.如图，用单色光垂直照射在观察牛顿环的装置上。当平凸透镜垂直向上缓慢平移而远离平面玻璃时，可以观察到这些环状干涉条纹 } \end{document} ``` 参考《[讨论：图文混排与列表环境同时使用，怎样更好？](https://wenda.latexstudio.net/q-1958.html)》 自荐[https://gitee.com/sikouhjw/zhangyu1000](https://gitee.com/sikouhjw/zhangyu1000)，虽然不是很好，我觉得你可以参考参考定理类、选择题是如何实现的

用 `section*` 之后还自己手动写第一章，你真的该用 word，别把 latex 当成公式编辑器。