Alexander Graham Bell was born in 1847 in Edinburgh, Scotland

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Alexander Graham Bell was born in 1847 in Edinburgh, Scotland. His father wa
expert in phonetics, the study of the sounds of languages. As a boy, Bell bec
interested in sounds and speech.
In 1870 the Bells decided to emigrate to America. They lived in Boston, w
Alexander taught in a school for the deaf. There he began experimenting with a mac
to help the deafhear. While experimenting with this machine, Bell had an idea. Why
use electricity to send the human voice from one place to another? Bell began wor
a new invention.
expert (n): chuyên gia
27. When was Alexander G. Bell born?
a. In 1847
b. In 1870
c. In 1870s
d. no information
28. He went to live
b. in America
29. What does the word 'emigrate' in line 4 mean?
a. leave somebody's country to live in another country
a. in Scotland
c. in Boston
d. b & c are correct