多项选择题
A.addresseschosenbyacompanytocommunicatewiththeInternet
B.addressesthatcannotberoutedthroughthepublicInternet
C.addressesthatcanberoutedthroughthepublicInternet
D.aschemetoconservepublicaddresses
E.addresseslicensedtoenterprisesorISPsbyanInternetregistryorganization