如图所示文件夹窗口，里面一共有几个文件？（ ） 

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31815' and id < 2542852 and id<>'2542852' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31815' and id > 2542852 and id<>'2542852' order by id asc limit 5