相关UrbanizationUntilrel的文学知识

问题详情：UrbanizationUntilrelativelyrecently,thevastmajorityofhumanbeingslivedanddiedwithouteverseeingacity.Thefirstcitywasprobablyfoundednomorethan5,500yearsago.  36    Infact,nearlyeveryonelive...