燕子是鸟的正例，蝙蝠是鸟的反例。 （ ）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='32286' and id < 2569522 and id<>'2569522' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32286' and id > 2569522 and id<>'2569522' order by id asc limit 5