The first paper was made from the bark of the mulberry tree.
A、driedwoodB
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Communicationisoneofthemostimportantbondsthatholdculturalsystemstogether.
Despitetheproliferationofotherfastermodesoftransportation,therailroadsremainthelargestcarriersofintercityfreightintheUnitedStates.
WhileBillieHolidaydidnotinventthemusiccalled"theblues",shemostassuredlyhelpedpopularizeit.
DoubleEagleinthefirsttransatlanticballoon,wasgreetedbyavidcrowdsinFrance.