首页
登录
职称英语
When was the first actual radio broadcast made? [originaltext] It was an Itali
When was the first actual radio broadcast made? [originaltext] It was an Itali
游客
2023-11-22
32
管理
问题
When was the first actual radio broadcast made?
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. 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. 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? 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. This was radio pioneer, David Sarnoff, who predicted that one day there would be a radio receiver in every home.
选项
A、On Christmas Eve of 1906.
B、On Christmas Eve of 1960.
C、On Christmas Eve of 1895.
D、On Christmas Eve of 1859.
答案
A
解析
情景事实题。短文的开篇讲到“And the first actual radio broadcast was made on Christmas Eve of 1906.”即真正能用来广播的装置是De Forest于1906年圣诞夜时做成的。选项A为正确答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3209696.html
相关试题推荐
[originaltext]M:Goodmorning,everybody.[6-1]Studieshaveshownthatchildre
[originaltext]M:Goodmorning,everybody.[6-1]Studieshaveshownthatchildre
[originaltext]M:Goodmorning,everybody.[6-1]Studieshaveshownthatchildre
[originaltext]M:Goodmorning,everybody.[6-1]Studieshaveshownthatchildre
[originaltext]W:Goodafternoon,everybody.Amongthemistakesjournalistssome
[originaltext]W:Goodevening,everybody.Automation,drivenbytechnologicalp
[originaltext]W:Goodevening,everybody.Automation,drivenbytechnologicalp
[originaltext]W:Goodevening,everybody.[5-1]Despiteeffortsfromallsides,
[originaltext]W:Goodevening,everybody.[5-1]Despiteeffortsfromallsides,
[originaltext]W:Goodevening,everybody.[5-1]Despiteeffortsfromallsides,
随机试题
"Tear’emapart!""Killthefool!""Murderthereferee(裁判)!"Thesearec
[originaltext]M:Ireallydon’tknowwhattodothissummer.Ican’taffordto
Knowledgemaybeacquiredthroughconversation,watchingtelevisionortrave
胰高血糖素由何种细胞所分泌A.A细胞 B.B细胞 C.D细胞 D.PP细胞
稳压二极管的正常工作状态是()。A.反偏状态 B.反向截止状态 C.正向导通
交换机当前状态处于局部配置模式的是()。A.switch> B.switch#
有人认为.村委会是最基层的国家机关。对此,下列判断正确的是()。A.观点正确。村
反洗钱国际组织及许多国家都将反洗钱恐怖融资和反扩散融资纳入反洗钱工作范畴,关于恐
村集体经济组织的幼畜及育肥畜属于()。A.农业资产 B.流动资产 C.无形资
关于项目风险的说法,正确的是()。(新教材已删除)A.投资者不能主动接受项
最新回复
(
0
)