\foreach 中的交替分页符

Question

我有一个列表，我想在该列表上每出现偶数项后就分页。

我该怎么做呢？

\documentclass{article}

\usepackage{ifthen}
\usepackage{pgf}
\usepackage{pgffor}

\begin{document}

\foreach \x in {1,...,20}
 {\x \linebreak}   
 % I want to divide each \x by 2
 % If the remainder is 0 then insert \pagebreak, else nothing.

\end{document}

Answer 1

\ifodd\x\relax\else\pagebreak\fi