在标么制中，只需选定两个基准，常选的是(    )。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68479' and id < 4421490 and id<>'4421490' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68479' and id > 4421490 and id<>'4421490' order by id asc limit 5