阅读理解OnehundredyearsagoatragedyhappenedinSanFrancisco．ah...
问题详情：阅读理解OnehundredyearsagoatragedyhappenedinSanFrancisco．ahugeearthquakedamagedmuchofthecity．Thenabigfiresweptthroughthecity．Manybuildingsburneddown．Hundredsofpeoplewerekilled．Thousandsofpeoplelost...