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[originaltext] Professor Wang is a physics teacher in Beijing. Once she was
[originaltext] Professor Wang is a physics teacher in Beijing. Once she was
游客
2023-09-13
23
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问题
Professor Wang is a physics teacher in Beijing. Once she was explaining to one of her classes about sound. She decided to test the students to see how well they had under- stood her. "I have an uncle in Xinjiang." she said. "Sup- pose I was calling him on the phone from here, and at the same time you were 25 metres away, listening to me. Who would hear me first, my uncle or you - and for what reason?" Ma Hue at once answered, "Your uncle, Professor Wang, because sound- waves travel slower than electricity.”
"Good," said the professor, but then another boy raised his hand.
"Yes, Li Ming?" said Professor Wang.
" Of course your uncle would hear you first," Li Ming said, "but that’ s because of the time difference. When it ’ s nine o’ clock here, it’ s seven o’ clock in Xinjiang."
选项
A、He knew this beforehand.
B、He judged from his common sense.
C、He judged from the speeds of sound
D、He judged by reading the textbook.
答案
C
解析
Ma Hua在回答问题时,可以听到wave和electricity。C为正确答案。
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