He learned how to operate the computer before he came to work here,（）he?

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30107' and id < 2437455 and id<>'2437455' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30107' and id > 2437455 and id<>'2437455' order by id asc limit 5