在CPU中，（）不仅要保证指令的正确执行，还要能够处理异常事件。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30130' and id < 2438239 and id<>'2438239' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30130' and id > 2438239 and id<>'2438239' order by id asc limit 5