A:No, I am not
B:No, I was just joking
C:Yes, I do
D:Yes, I have never been more seriou
下列有关初生演替和次生演替的叙述中,正确的是( )
已知点列An(an,bn)(n∈N*)均为函数y=ax(a>0,a≠1)的图象上,点列Bn(n,0)满足|AnBn|=|AnBn+1|,若数列{bn}中任意连续三项能构成三角形的三边,则a的取值范围为( )