Exercise 1 : Đọc kỹ đoạn văn rồi điền từ còn thiếu vào chỗ trống mỗi câu.
You may use the telephone every day but how much you know about it. Alexander Bell invented the first telephone in 1876. Bell was born in Scotland in 1847 but later he decided to emigrate to America and taught in a school for the deaf-mutes . Bell was interested in sound , so he wanted to be able to send sound through a wire . He did many experiments with his assistant , Thomas Watson . Bell finally succeeded . He inve...
Đọc tiếp
Exercise 1 : Đọc kỹ đoạn văn rồi điền từ còn thiếu vào chỗ trống mỗi câu.
You may use the telephone every day but how much you know about it. Alexander Bell invented the first telephone in 1876. Bell was born in Scotland in 1847 but later he decided to emigrate to America and taught in a school for the deaf-mutes . Bell was interested in sound , so he wanted to be able to send sound through a wire . He did many experiments with his assistant , Thomas Watson . Bell finally succeeded . He invented the first telephone . Later other inventions made better ones but the way the telephone works is still the same
1. In 1976 Alexander.................................................................................................
2. Bell was born in...........................................................1947
3. Bell wanted to be able to sen through a wire because he was...............................
4........................................was Bell’s assistant
Exercise 2 : Đọc kỹ đoạn văn rồi điền từ còn thiếu vào chỗ trống mỗi câu.
The invention of the phonograph happened quite by accident . Thomas Edison moved to Menlo Park, New Jersy in 1876, where he established an industrial research laboratory . There, Edison was working on a carbon telephone transmitter to improve the exosting Bell telephone system
In that laboratory a year later, Edison invented the phonograph while he was trying to improve a telegraph repeater . He attached a telephone diaphragm to the needle in thetelegraph repeater ; in this way , he was able to reproduce a recording that could be played back. After he made some improvements to the machine, he tested it . He recited ‘‘Mary had a little lamb’’ into the machine and played his voice back to a very surprised audience
1. Thomas Edison moved to............................................................................1976
2. Thomas Edisom established an industrial research laboratory in....................................1976
3. He invented.............................while he was trying to improve a telephone repeater
4. The invention of the....................................................................by accident
