You are presented with the quiz "People can listen and talk to each other over long distances using what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "atelephone is used for communication by humans over long distances" and "communicating is as much about listening as it is about talking". So, what's the best answer to the question?
Select from the following. (1). Neuron.; (2). power; (3). microscope; (4). microphone; (5). electricity; (6). dictaphone; (7). telephone; (8). waves;
Answer:
(7).