①乙烷②乙烯③乙炔④苯若按相邻两碳原子之间的距离由大到小的顺序排列，则正确的是（　　）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='20633' and id < 1810263 and id<>'1810263' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='20633' and id > 1810263 and id<>'1810263' order by id asc limit 5