\documentclass[%11pt,
  numbered question,
  numbered answer,
  scroll,
]{Q-and-A}

\UseLanguage{Chinese}

\begin{document}


:: {Q-and-A-demo-cn-content}


---

"
  以下是这段对话的代码。

  == {Q-and-A-demo-cn-content}

"
  以下是主文档的代码。

  == [latex] {\jobname}


\end{document}
