题目内容
下列自然现象是基于光的反射原理发生的是(: )o
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SQL Error: select id,body,options from ***_enewstiku where sourceid='31897' and id < 2550071 and id<>'2550071' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31897' and id > 2550071 and id<>'2550071' order by id asc limit 5