相关IntheCaucasusregiono的文学知识

问题详情：      IntheCaucasusregionofRussia,nearly50outofevery100,000peoplelivetocelebratetheir100thbirthday,andmanydon’tstopat100!Bycomparison,inAmericaonly3peoplein100,000reach100．ButtheseRussia...