2020 National Question 11 Single-choice Differentiating 2020_新课标II Paper 11.若 $2^{x}-2^{y}<3^{-x}-3^{-y}$,则( ) A. $\ln(y-x+1)>0$B. $\ln(y-x+1)<0$C. $\ln|x-y|>0$D. $\ln|x-y|<0$ Answer keyA ☆ SaveCan't do it, show the explanation查看原卷 →