从A、B、C、D四个选项中，选出与所给句子划线部分意义相同或相近的一项。

He takes exercise every day in order to build himself up. [ ]

A. set himself up

B. made himself healthy

C. give himself up

D. make himself stronger

建立重大危险源监控预警系统的目的主要是监视重大危险源在( )情况下的运行情况及状态，并对其实时和历史趋势作一个整体评判，对系统的下一时刻做出超前的预警行为。

A．正常

B．非正常

C．临界

D．失效