A:5(m2-1)
B:5m2-6m-5
C:5(m2+1)
D:-(5m2+6m-5)
The fire spread through the hotel very quickly but everyone get out.
在华夏五千年浩瀚的历史长河中,家国情怀感人至深,随意掬起一抔足以让人心潮澎pài____:花木兰代父从军,深明大义,妇rú____皆知;端木蕻良不忘国chǐ____,铮铮誓言,激荡人心;闻一多高昂头lú____,直面枪口,正气凛然。