下列选项中，属于第二信号系统条件反射的是（ )

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27591' and id < 2273610 and id<>'2273610' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27591' and id > 2273610 and id<>'2273610' order by id asc limit 5