首页
登录
职称英语
When was the first actual radio broadcast made? [br] [originaltext] It was a
When was the first actual radio broadcast made? [br] [originaltext] It was a
游客
2023-11-02
61
管理
问题
When was the first actual radio broadcast made? [br]
It was an Italian inventor who created the first wireless device for sending out radio signals in 1895. But not until the American inventor Lee De Forest built the first amplifying vacuum tube in 1906 did we get the first radio as we know it.(14)And the first actual radio broadcast was made on Christmas Eve of 1906. That’s when someone working from an experimental station in Brand Rock, Massachusetts, arranged the program of two short musical selections, a poem and a brief holiday greeting. The broadcast was heard by wireless operators on ships with a radio through several hundred miles.(15)The following year, De Forest began regular radio broadcasts in New York. These programs were similar to much of what we hear on the radio today in that De Forest played only music. But because there were still no home radio receivers, De Forest’s audience consisted of only wireless operators on ships in New York harbor. There is no doubt that radio broadcasting was quite a novelty in those days. But it took a while to catch on commercially. Why?(16)For the simple fact that only a few people, in fact, only those who tinkered with wireless telegraphs as a hobby, owned receivers. It wasn’t until the 1920’s that someone envisioned mass appeal for radio.(17)This was radio pioneer, David Sarnoff, who predicted that one day there would be a radio receiver in every home.
选项
A、Military communications officers.
B、People who treated radio technology as a hobby.
C、People who lived in big cities.
D、People with an interest in music.
答案
B
解析
语义理解题。根据句(16)可知,只有那些喜爱无线电的人才有接收机。因此B为正确答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3151846.html
相关试题推荐
Whatarethemanandthewomanmainlydiscussing?[br][originaltext]W:Hi,Jim
Whatarethemanandthewomanmainlydiscussing?[originaltext]W:Hi,Jim.What
Themandoesn’twanttogotouniversitybecause______.[br][originaltext]W:A
Themandoesn’twanttogotouniversitybecause______.[br][originaltext]W:A
Whatcanwelearnaboutthewoman?[br][originaltext]M:So,(l-l)haveyoufo
WhichofthefollowingdidNOTlaunchthe"roadmap"planin2003?[originaltext
WhatdoesthemanwanttoknowfromJessica?[br][originaltext]M:Hi,Jessica!
WhatdoesthemanwanttoknowfromJessica?[br][originaltext]M:Hi,Jessica!
WhatdoesthemanwanttoknowfromJessica?[originaltext]M:Hi,Jessica!Didy
Whatkindofaccommodationdoesthewomanneed?[originaltext]M:Goodmorning.C
随机试题
StandardEnglishisthevarietyofEnglishwhichisusuallyusedinprintan
[originaltext]Theweatherisgettinghotterandyou’llbegettingthirstier
WhenthePacificWarbrokeout,Edwardwasdraftedbynavyandservedfourfull
PhysicalEducationI.BriefintroductionofthecoursesA.PhysicalFitnessIn
Igetalongbetterwithothers______(既然我已消除了内疚).nowthatI’vegotridofmygui
根据所给资料,下列说法中不正确的一项是:A.2012年,江西省服务业固定资产
噎膈之气虚阳微证的治法是A.滋阴养血 B.破血行瘀 C.开郁化痰 D.温补
圬工基础或砂垫层基础,施工前必须先对()进行检查验收。A.上承层地基土
案例: 其乐融融 ①古有桃花源中的“黄发垂钓,并怡然
魏孝文帝亲政后,面对着阶级、民族矛盾日益激化的政治形势,不得不_____,推行一
最新回复
(
0
)