According to the passage, how did Edison test his new invention?
A.He made improvements to the machine.
B.He used a carbon transmitter.
C.He read a children’s rhyme.
D.He produced the audience voice.
A.He made improvements to the machine.
B.He used a carbon transmitter.
C.He read a children’s rhyme.
D.He produced the audience voice.
Loga
Hóa Học lớp 12
