Was the first telephone in commercial use When was Alexander Graham Bell born? 2/ Where was he born? 3/When did he emigrate to the USA? 4/ Who did he work with at Boston University? 5/ Who was Bell’s assistant? 6/ What was the first message? 7/ When did Bell and his assistant introduce the telephone? 8/ Was the first telephone in commercial use inin 1877?
Loga
Sinh Học lớp 12
