相關AlexanderGrahamBellw的文學知識

問題詳情：AlexanderGrahamBellwasbornin1847inScotland,butwhenhewasyoung,healwaystookcareofhisalmost   61   (entire)deafmotherandhebecome   62  (interest)inhelping deafpeople, 63 ledhimtoinv...