下列关于光现象的物理解释正确的是：

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='29350' and id < 2390021 and id<>'2390021' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29350' and id > 2390021 and id<>'2390021' order by id asc limit 5