技能形成的基本途径是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30613' and id < 2469422 and id<>'2469422' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30613' and id > 2469422 and id<>'2469422' order by id asc limit 5