Thefirstpaperwasmadefromthebarkofthemulberrytree.
A、driedwoodThefirstpaperwasmadefromthebarkofthemulberrytree.
Formulatedin1823,theMonroeDoctrineassertedthattheAmericaswerenolongeropentoEuropeancolonization.
Communication is one of the most important bonds that hold cultural systems together.
ThecompanyissuesanannualreporteveryMarch.
Themegaphone(microphone)makesthevoicesoundlouderbecauseitpointssoundwavesinonedirectionandkeepsthemfromspreadingoutinalldirections.