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A
D
B
Read the following passage, then choose the correct answer to questions 26-30.
The invention of the phonograph happened quite by accident. Thomas Edison
Menlo Park, New Jersy in 1876, where he established an industrial research laborato
Edison was working on a carbon telephone transmitter to improve the existing Bell parl
system.
C. E
Read t
In that laboratory a year later, Edison invented the phonograph while he was
improve a telegraph repeater. He attached a telephone diaphragm to the needle in th
repeater; in this way, he was able to reproduce a recording that could be played back. A
some improvements to the machine, he tested it. He recited "Mary Had a Little L
machine and played his voice back to a very surprised audience.
26. What is the best title for the passage?
A. Thomas Edison's many inventions
C. The History of Menlo Park
B. Improvements in telepho
D. An accidental invention