相关AlexanderGrahamBellw的文学知识

问题详情：AlexanderGrahamBellwasbornin1847inScotland,butwhenhewasyoung,healwaystookcareofhisalmost   61   (entire)deafmotherandhebecome   62  (interest)inhelping deafpeople, 63 ledhimtoinv...