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Alexander Graham Bell was born in 1847 in Edinburgh, Scotland. He moved to Canada and then to the USA in the 1870s. In America, he worked with deaf-mutes at Boston University. Soon, Bell started experimenting with ways of transmitting speech over a long distance. This led to the invention of the telephone. Thomas Watson was Bell's assistant. Bell and Watson introduced the telephone in 1876. Bell demonstrated his invention at a lot of exhibitions. He died in 1922 1. When and where was Alexander Graham Bell born? * Câu trả lời của bạn 2. What did he do when he was at Boston University? * Câu trả lời của bạn 3. Who was Thomas Watson? * Câu trả lời của bạn 4. Where did Bell demonstrate his invention? *
Kim Ngân
13 tháng 3 2020 lúc 15:07

1. He was born in 1847 in Endinburgh, Scotland

2. He worked with deaf-mutes

3. Thomas Edison was Bell's assistant

4. Bell demonstrated his invention at a lot of exhibitions

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