In 1861 it seemed inevitable that the Southern states would break away from the Union.
A、strangeB
暂无解析
Despitetheproliferationofotherfastermodesoftransportation,therailroadsremainthelargestcarriersofintercityfreightintheUnitedStates.
Communicationisoneofthemostimportantbondsthatholdculturalsystemstogether.
TheNativeAmericaninterpreterSacajaweawasavaluablememberoftheLewisanddarkexpeditionin1805.
HowmanypeopleareawarethatadancerwiththeNewYorkCityBallettypicallywearsoutaminimumoftwohundredpairsoftoeshoesperyear?
Blue－greenalgaegrowabundantlyinsaltmarshes.
