—个血型为AB型的孩子，父母的血型组合不可能是（

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30914' and id < 2487785 and id<>'2487785' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30914' and id > 2487785 and id<>'2487785' order by id asc limit 5