Miss Gorgers taught physics in a New York school. Last month she explained to one of her c

Miss Gorgers taught physics in a New York school. Last month she explained to one of her classes about sound, and she decided to test them to see how successful she had been in her explanation. 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 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, but then one of the girls raised her hand, and Miss Gorgers said, “Yes? Kate.”
“I disagree. Your brother would hear you earlier because when it’s 11 o’clock here and it’s only 8 o’clock in Los Angeles.” Kate said.
【小题1】
Miss Gorgers was teaching her class     .A．how to telephoneB．about electricityC．about time zoneD．about sound【小题2】
Miss Gorgers raised this question because she wanted to know whether     .A．it was easy to phone to Los Angeles B．her student could hear her from 75 feet awayC．her students had understood her lessonD．sound waves were slower than electricity【小题3】
Kate thought Tom was wrong because     .A．clocks in Los Angeles showed a different time from those in New YorkB．electricity was slower than sound wavesC．Tom was not good at physics at allD．Tom’s answer had nothing to do with sound waves【小题4】
Whose answer do you think is correct according to the laws of physics?
A. Tom’s.   　 　 B. Kate’s.        C. Both A and B. 　 　D. Neither A nor B.D