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 to tát indicate the correct answer to tát each of the questions.      The invention of the phonograph happened quite by accident. Thomas Edison moved to tát Menlo Park, New Jersy in 1876, where he established an industrial research laboratory. There, Edison was working on a carbon telephone transmitter to tát 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 to tát indicate the correct answer to tát each of the questions.

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

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

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

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