3岁男孩，生后5个月逐渐出现智力低下，毛发色浅，皮肤白皙，惊厥3次。本病可能的病因是

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='28717' and id < 2342431 and id<>'2342431' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='28717' and id > 2342431 and id<>'2342431' order by id asc limit 5