ACCORDING TO THE PASSAGE, THE INVENTION OF THE PHONOGRAPH_________...
47.According to the passage, the invention of the phonograph_________ .
A.was quite unplanned
B.was Edison’s principal project
C.was surprising to no one
D.took many years
47.According to the passage, the invention of the phonograph_________ .
A.was quite unplanned
B.was Edison’s principal project
C.was surprising to no one
D.took many years