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Nguyễn Thị Lan Anh

Circle the best alternative

If you ask anyone who (9) ............television, they will tell you that it was John Logie Baird. Of course, Baird was an extremely important personality in the history of television, but it would be more (10)_________ to see his role as part of a chain of events which finally led to television as we know it today. The history of television really begins in 1817 with the (11) ............. of the chemical selenium by Berzelius, a Swedish chemist. It was found that the amount of electric current that selenium could carry (12) ................. on how much light struck it. Then, G.R. Carey, who was an American inventor, (13)____________ with the first real television system in 1875. His system used selenium to (14) ................... picture to a row of light bulbs. However, this picture was not very clear. Over the next few years, a number of scientists and inventors simplified and (15) ................... Carey’s system. In 1923, Baird made the first practical transmission

9) A. invented B. found C. noticed D. conceived

10) A. real B accurate C particular D specific

11) A. evidence B discovery C sighting D encounter

12) A. called B sent C depended D turned

13) A. checked up B brought up C broke up D came up

14 A push B eliminate C transmit D delay

15 A improved B arranged C multiplied D analysed

Ngân Hà
26 tháng 8 2017 lúc 16:54

Circle the best alternative

If you ask anyone who (9) ............television, they will tell you that it was John Logie Baird. Of course, Baird was an extremely important personality in the history of television, but it would be more (10)_________ to see his role as part of a chain of events which finally led to television as we know it today. The history of television really begins in 1817 with the (11) ............. of the chemical selenium by Berzelius, a Swedish chemist. It was found that the amount of electric current that selenium could carry (12) ................. on how much light struck it. Then, G.R. Carey, who was an American inventor, (13)____________ with the first real television system in 1875. His system used selenium to (14) ................... picture to a row of light bulbs. However, this picture was not very clear. Over the next few years, a number of scientists and inventors simplified and (15) ................... Carey’s system. In 1923, Baird made the first practical transmission

9) A. invented B. found C. noticed D. conceived

10) A. real B accurate C particular D specific

11) A. evidence B discovery C sighting D encounter

12) A. called B sent C depended D turned

13) A. checked up B brought up C broke up D came up

14 A push B eliminate C transmit D delay

15 A improved B arranged C multiplied D analysed


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