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
63
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:http://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
Charles’shopdoesNOTsell[br][originaltext]W:Well,Charles,Imustsaytha
[img]2018m11s/ct_eyyjsaz2017j_eyyjsacloze_0091_201809[/img]Genealogy,thest
In1689,theBillofRights,whichensuredthattheKingwouldneverbeableto
Ourassociation,whichhasconsistentlypressedforgreateremploymentopportuni
Theevolutionofsexratioshasproduced,inmostplantsandanimalswithse
[originaltext]M:Hi,Donna,areyouinterestedingoingtoanartexhibitionon
初产妇,宫口开全2小时,胎头棘下2cm,宫缩较前减弱,胎膜已破,胎心120次/分
2020年12月,全国中心城市客运量的同比减少率与同年1月相差:A.不到
某在建工程,建筑高度为28m,地上6层,每层建筑面积为2000m2,设置了室内、
血虚证可以出现A.面色淡白 B.头晕目眩 C.手足发麻 D.妇女经闭
最新回复
(
0
)