Whenwetalkaboutpaper的精選

問題詳情：Whenwetalkaboutpaper,wethinkofnewspapersandbooks.Buttherearemanyotherusesofpaper.Onlyhalfof  61 world’spaperisusedforbooksandnewspapers.Paperon  62 weusuallywriteanddrawisverygoodforkee...