1()7,61,621 A,1,B,3,C,5,D,61,0,-1,-3,10,(),89A,24,B,33,C.42,

1(1)7,61,621 A,1,B,3,C,5,D,6选A1=1^0-07=3^2-261=4^3-3621=5^4-4 所以()=2^1-1=11,0,-1,-3,10,(33),89A,24,B,33,C.42,D,56 选B(1+(-1))/3=0(0+(-3))/3=-1(-3+?)/3=10 =33相邻三项之间,前一项加后一项的和除以3等于中间一项"