She said to them, “Now I have a brother in Los Angeles. If I was calling him on the phone, and at the same time you were 75 feet away, listening to me from across the street, which of you would hear what I said earlier, my brother or you and for what reason?" Tom at once answered. “Your brother. Because electricity travels faster than sound waves.” “That's very good.” Miss Gorgers answered.Miss Gorgers asked this question because she wanted to know whether ____
A、itwaseasytophonetoLosAngeles
B、herstudentscouldhearherfrom75feetaway.
C、herstudentshadgraspedherlesson.
D、soundwaveswereslowerthanelectricity
发布时间:2024-09-26 17:47:47