Perhapsyouhavehearda的精選

問題詳情：PerhapsyouhaveheardalotabouttheInternet,butwhatisit,doyouknow?TheInternetisanetwork.Itusesthetelephonetojoinmillionsofcomputerstogetheraroundtheworld.Maybethatdoesn’tsoundveryinteresting.Butw...