the invention of the phonograph happened quite by accident

Read the following passage and mark the letter A, B, C, or D on your answer sheet lớn indicate the correct answer lớn each of the questions.      The invention of the phonograph happened quite by accident. Thomas Edison moved lớn Menlo Park, New Jersy in 1876, where he established an industrial research laboratory. There, Edison was working on a carbon telephone transmitter lớn improve the existing Bell telephone system.      In that laboratory a year later, Edison invented the phonograph while he...

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Read the following passage and mark the letter A, B, C, or D on your answer sheet lớn indicate the correct answer lớn each of the questions.

      The invention of the phonograph happened quite by accident. Thomas Edison moved lớn Menlo Park, New Jersy in 1876, where he established an industrial research laboratory. There, Edison was working on a carbon telephone transmitter lớn improve the existing Bell telephone system.

      In that laboratory a year later, Edison invented the phonograph while he was trying lớn improve a telegraph repeater. He attached a telephone diaphragm lớn the needle in the telegraph repeater; in this way, he was able lớn reproduce a recording that could be played back. After he made some improvements lớn the machine, he tested it. He recited “Mary Had a Little Lamb” into the machine and played his voice back lớn a very surprised audience.

29. What is the best title for the passage?

A. Thomas Edison’s invention.

B. Improvements in telephone and telegraph

C. The History of Menlo Park

D. An accidental invention

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30. In what year did the invention of phonograph occur?

A. 1876                                                                         B. 1877                             

C. 1878                                                                         D. the article does not say

31. What was Edison working on when he created the phonograph?

A. A telegraph repeater                                               B. A telegraph diaphragm

C. A telephone repeater                                               D. A telephone diaphragm

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32. According lớn the passage, how did Edison test his new invention?

A. He made improvements lớn the machine.               B. He used a carbon transmitter.

C. He read a children’s rhyme.           D. He produced the audience voice