Canwelivewithoutsalt的精选

问题详情： 阅读理解Canwelivewithoutsalt？No,saltisveryimportanttous.Weneedsaltinourfood.Animalsneedit,too.   Mostofthesaltinourcountrycomesfromthesea.Peoplediggreatpools(水池)andletintheseawater.Whent...