\textbf{98-} \textbf{According to the passage, the linear plan is more appropriate for airports ----------.}
\begin{enumerate}
\item[1)] with small planes
\item[2)] that offer domestic flights
\item[3)] the passengers of which prefer to board planes as quickly as they can
\item[4)] that can provide service to a limited number of planes at the same time
\end{enumerate}