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
2023-11-22
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. 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://www.tihaiku.com/zcyy/3209699.html
相关试题推荐
Oftentimeswhenwecry,wefeelalumpinthethroat.Doesalumpactual
Oftentimeswhenwecry,wefeelalumpinthethroat.Doesalumpactual
Oftentimeswhenwecry,wefeelalumpinthethroat.Doesalumpactual
Oftentimeswhenwecry,wefeelalumpinthethroat.Doesalumpactual
Oftentimeswhenwecry,wefeelalumpinthethroat.Doesalumpactual
Howmanyattacksandclasheswerereportedinthisnews?[originaltext]Atta
Accordingtothecourtruling,Israelhasto[br][originaltext]TheInterna
Accordingtothecourtruling,Israelhasto[originaltext]TheInternational
Wheredoesthisconversationmostlikelytakeplace?[originaltext]M:Hello.May
Whatisthemaintopicofthisconversation?[br][originaltext]M:Weseemtob
随机试题
•Readthistexttakenfromanarticleaboutsomekeyaspectsofoperationsmana
[originaltext]M:Whydoyouthinkthatway?W:WhileIadmitthereisverylitt
Whatisthebesttitleofthepassage?[originaltext]CarnegieMellonUniversi
[originaltext]Moderator:Goodevening,ladiesandgentlemen.It’smyho
()是指物质高温分解或燃烧时产生的固体和液体微粒、气体,连同夹带和混入的部分空
白癜风皮损多见的部位为A、手掌、足掌、口鼻 B、腹腔脏器、臀部 C、胸腔脏器
根据《消防法》的规定,有()行为的施工单位,将被责令改正,并处5000元以上5万
共用题干 APowerfulInfluenceTherecanben
酶切鉴定DNA长度大小过程中使用的酶是A.限制性内切酶 B.连接酶 C.D
关于建筑市场诚信行为记录的说法,正确的有()。2018真题A、不良行为记录信息的
最新回复
(
0
)