首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
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 te
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 te
admin
2009-04-23
81
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 understood her. "I have an uncle in Xinjiang." she said. "Suppose 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
How did Ma Hua make such a judgment?
转载请注明原文地址:https://kaotiyun.com/show/PwZK777K
0
大学英语六级
相关试题推荐
A—accountingsystemJ—fixedassetsB—financialforecastK—netprofitC—balancesheetL—baddebtsD—rentalincomeM—capita
TheBritishlikemoving.Theyregardtheopportunitytotravelfarandfrequentlyasaright.Somepeoplespenduptotwoorthr
Whatarethereinoursocietynowadays?Thereare______.
A、Heisnotsmart.B、Hedoesn’tgetalongwithothers.C、Hehassomementalproblems.D、He’snotresponsibleforhiswork.B女士问男
Environmentiseverythingthatsurroundsus:plants,animals,buildings,country,air,water—infacteverythingthatcanaffect
A—securitiesbusinessK—stockcompanyB—stockexchangecorporationL—securitiesC—quotationM—commonstockD—shareN—preference
Insurance(保险)isthesharingofrisks.Nearlyeveryoneisexposedtoriskofsomesort.Thehouseowner,forexample,knowsthat
A、Gettoworkontime.B、Makethemanandothershappy.C、Beatworkanhourearlier.D、Movetoanearerapartment.A对话结尾女士问男士能不
海报【说明】请以英语系学生会的名义写一则海报。【时间】3月15日。【内容】为丰富课外活动,提高学生英语口语能力,学生会定于下周三下午1点半在主楼404教室举办全系英语演讲比赛。凡是愿意参加者在本周六以前向各班班长报名
A、Hewasgoingtowork.B、Hewasgoingforawalk.C、Hewasgoingforapicnic.D、Hewasgoingforagame.BWhatwashedoingwh
随机试题
大众传播学者所说的“靶子”是指【】
A、y轴轴向牵拉伴x轴旋转B、x轴旋转力量C、y轴的轴向压缩D、y轴轴向压缩伴顺或逆时钟旋转单纯楔形压缩性骨折暴力来自______。
“滋水涵木”法确立的理论依据是
A.骨髓B.淋巴结C.胸腺D.外周免疫器官E.脾免疫应答发生的部位是
()是目前国内采用最为广泛的一种形式,适用于各类非水溶性甲、乙、丙类液体储罐和水溶性甲、乙、丙类液体的固定顶或内浮顶储罐。
与其他融资方式相比,下列属于融资租赁筹资方式特点的有()。
A、 B、 C、 D、 B
根据材料l,说明人的命运是由什么决定的?根据材料3,说明作者是何观点?
AccordingtoDarwin,whydopeoplelaugh?
ThoughIdaBauerwasonly18yearsold,shehadcometoSigmundFreudsufferingfromcoughingandspeechlessness.She’dbecomed
最新回复
(
0
)