
4.C【解析】对于A选项,1,2,3成等差数列,但1,4,9不成等差数列,故A错误;对于B选项,1,2,3成等差数列,但log21,log22,log23为0,1,log23不成等差数列,故B错误;对于C选项,由于a,b,c成等差数列,故b-a=c-b,则(b-2)-(a-2)=(c-2)-(b-2),即a-2,b-2,c-2成等差数列,C正确;对于D选项,1,2,3成等差数列,(1/3)1,(1/3)2,(1/3)3不成等差数列,故D错误.故选C.
作者:网络 来源: 2022-06-24 17:27:50 阅读:次
4.C【解析】对于A选项,1,2,3成等差数列,但1,4,9不成等差数列,故A错误;对于B选项,1,2,3成等差数列,但log21,log22,log23为0,1,log23不成等差数列,故B错误;对于C选
4.C【解析】对于A选项,1,2,3成等差数列,但1,4,9不成等差数列,故A错误;对于B选项,1,2,3成等差数列,但log21,log22,log23为0,1,log23不成等差数列,故B错误;对于C选项,由于a,b,c成等差数列,故b-a=c-b,则(b-2)-(a-2)=(c-2)-(b-2),即a-2,b-2,c-2成等差数列,C正确;对于D选项,1,2,3成等差数列,(1/3)1,(1/3)2,(1/3)3不成等差数列,故D错误.故选C.