首页
登录
职称英语
When was the first actual radio broadcast made? [br] [originaltext] It was an
When was the first actual radio broadcast made? [br] [originaltext] It was an
游客
2024-10-30
1
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. 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、They would get smaller in size.
B、Their signals would travel further.
C、They would become less popular than television.
D、They would be common household items.
答案
D
解析
语义理解题。从“This was radio pioneer, David Sarnoff, who predicted that one day there would be a radio receiver in every home.”可知总有一天,每个家庭都将拥有无线电收音机。选项D为正确答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3824267.html
相关试题推荐
Whenwasthefirstactualradiobroadcastmade?[br][originaltext]Itwasan
Whatarespeakersmainlydiscussing?[br][originaltext]M:Howdidyoulikeyes
Whatarespeakersmainlydiscussing?[originaltext]M:Howdidyoulikeyesterday
HowmanyelectoratesopposedtheEUconstitutioninFrench?[originaltext]Fre
Howmanyhijackersareinvolvedinthenews?[originaltext]Russiancommandos
Whatarethespeakersmainlydiscussing?[br][originaltext]W:DoctorWhite,we
Whatarethespeakersmainlydiscussing?[br][originaltext]W:DoctorWhite,we
Whatarethespeakersmainlydiscussing?[originaltext]W:DoctorWhite,werecen
Whatseemstosurprisethemanaboutthenewproduct?[br][originaltext]W:I’v
Whatseemstosurprisethemanaboutthenewproduct?[originaltext]W:I’vebeen
随机试题
A—PerfectattendancebonusJ—MinimumwageB—PerformancebonusK—BasicwageC—Inc
Theexpensiveshopsinafamousarcade(有拱廊的街道)nearPiccadillywerejustop
TheRepublicPartyhadonlywona______victorybyelevenvotesintheelection.A
《国民经济行业分类》按层次划分我国经济活动为()个门类。A.913
对联的横批是对联()的高度概括。A.主题思想 B.表现手法 C.意境 D.
下列关于“包豪斯”的论述正确的是( )。A.“包豪斯”是英语的音译 B.以功
在公司财务分析中应该注意()。A:财务报表数据的准确性B:财务报表数据的真实性
韦氏成人智力测验中属于言语部分的有()。 A.词汇 B.领悟 C.数字广度
(2018年真题)丹参中含有的丹参酮其结构类型是( )A.三萜类 B.香豆素
某机电安装公司承建一个生活小区室外热力管网工程安装任务。施工范围是由市政热力管网
最新回复
(
0
)