在环境之间而不是在环境内部进行分页

Question

我使用这个exercise软件包制作了由一系列小问题组成的练习表。

由于我使用两列布局，因此经常会遇到分页符/列符，有时它会在难看的地方中断练习：请参阅以下 MWE 中的练习 3。练习 2 之后的中断应该会​​更好。

\documentclass[a4paper,11pt, twocolumn]{article}
\usepackage[utf8]{inputenc}

\usepackage{exercise}
\usepackage{lipsum}


\begin{document}

\begin{Exercise}
A small sentence to describe the context of this small exercise.
\Question{Please fill this table:}

\begin{tabular}{|l|l|l|l|}\hline
 A & B & C & ??\\\hline
 A & B & C & ??\\\hline
 A & B & C & ??\\\hline
 A & B & C & ??\\\hline
 A & B & C & ??\\\hline
\end{tabular}

\Question{Can you answer this question?}
\Question{And this one?}
\Question{And this other one ?}
\end{Exercise}

\begin{Exercise}
 \lipsum[1]
\Question{Can you answer this question?}
\Question{And this one?}
\Question{And this other one ?}
\end{Exercise}

\begin{Exercise}
A small sentence to describe the context of this small exercise.
\Question{Please fill again this table:}

\begin{tabular}{|l|l|l|l|}\hline
 A & B & C & ??\\\hline
 A & B & C & ??\\\hline
 A & B & C & ??\\\hline
 A & B & C & ??\\\hline
 A & B & C & ??\\\hline
\end{tabular}

\Question{Can you answer this question?}
\Question{And this one?}
\end{Exercise}

\begin{Exercise}
 \lipsum[1]
\Question{Can you answer this question?}
\end{Exercise}

\end{document}

我怎样才能优先休息之间环境而不是之内可以吗？请注意，我并不想完全禁止分页符/列分隔符。

这\nopagebreak[number]对我来说似乎很合适，但如何将它应用到像这样的整个环境中Exercise？

Answer 1

我终于找到了这里\needspace使用来自包的命令的解决方案needspace：

[它的] 参数告诉您需要多少空间。如果空间不足，则清除当前页面，并将需要保存的内容插入到新页面上。

以下是我修改后的 MWE：

\documentclass[a4paper,11pt, twocolumn]{article}
\usepackage[utf8]{inputenc}

\usepackage{exercise}
\usepackage{lipsum}

\usepackage{needspace}

\let\oldExerciseHeader\ExerciseHeader
\def\ExerciseHeader{\needspace{4\baselineskip}\oldExerciseHeader} % Redefine Exercise header to include needspace command. 

\begin{document}

\begin{Exercise}
A small sentence to describe the context of this small exercise.
\Question{Please fill this table:}

\begin{tabular}{|l|l|l|l|}\hline
 A & B & C & ??\\\hline
 A & B & C & ??\\\hline
 A & B & C & ??\\\hline
 A & B & C & ??\\\hline
 A & B & C & ??\\\hline
\end{tabular}

\Question{Can you answer this question?}
\Question{And this one?}
\Question{And this other one ?}
\end{Exercise}

\begin{Exercise}
 \lipsum[1]
\Question{Can you answer this question?}
\Question{And this one?}
\Question{And this other one ?}
\end{Exercise}

% \begin{samepage}
\begin{Exercise}
A small sentence to describe the context of this small exercise.
\Question{Please fill again this table:}

\begin{tabular}{|l|l|l|l|}\hline
 A & B & C & ??\\\hline
 A & B & C & ??\\\hline
 A & B & C & ??\\\hline
 A & B & C & ??\\\hline
 A & B & C & ??\\\hline
\end{tabular}

\Question{Can you answer this question?}
\Question{And this one?}
\end{Exercise}
% \end{samepage}

\begin{Exercise}
 \lipsum[1]
\Question{Can you answer this question?}
\end{Exercise}

\end{document}

当然，保留的长度（4\baselineskip）可以根据您的需要进行更改。