某二叉树的中序遍历序列为CBADE,后序遍历序列为CBADE，则前序遍历序列为（ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29839' and id < 2421754 and id<>'2421754' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29839' and id > 2421754 and id<>'2421754' order by id asc limit 5