Unit 4-Exercise 11 Inventor of the telephone (1) P54-55Listen to the first part of the talk about the inventor of the telephone. As you listen to the talk, write down the missing information in the notes below.[音频]The man who invented the telephone was Alexander Graham Bell. He was born in Edinburgh,Scotland, in 1. _____________· His father and grandfather had both been teachers of 2. _____________. His father had worked out a system of “Visible Speech”, that is, a system by which a deaf person can “see” what people say by reading 3. _____________. Bell learned this system and soon he 4. _____________ a teacher of the deaf too, and he opened his 5. _____________ school for the deaf people in Canada.Through his teaching, Bell became interested in the 6. _____________ of the human voice. He thought that it should be possible to 7. _____________ sound across a distance. He worked very hard with his assistant Thomas A. Watson day and night on this idea. They made some 8. _____________and tried again after each failure.