ThecelebrationofEarthDayonApril22ndbeganintheUnitedSta...
问题详情: ThecelebrationofEarthDayonApril22ndbeganintheUnitedStatesin1970.EarthDayisaperfecttimetoreflectaboutwhatyouaredoingtohelpprotecttheenvironment.Therearemanywaysthatyoucancelebratealoneandwith...