若ax2+bx+c＞0的解集为{x|-2＜x＜4}，那么对于函数f（x）=ax2+bx+c应有（　　）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='13833' and id < 1128316 and id<>'1128316' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='13833' and id > 1128316 and id<>'1128316' order by id asc limit 5