阶段一,阶段二,阶段三,学业分层测评,1/36,2/36,前一项,同一个常数,常数,公差,d,2,3/36,4/36,5/36,a,b,2,A,6/36,d,个单位,7/36,8/36,9/36,10/36,等差数列判定与证实,11/36,12/36,13/36,14/36,15/36,XXX,等差中项应用,16/36,17/36,18/36,19/36,等差数列通项公式及其应用,20/36,21/36,22/36,23/36,24/36,25/36,26/36,27/36,28/36,29/36,30/36,31/36,32/36,33/36,34/36,35/36,36/36,