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
37
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
TALK:LOQUACIOUS::A、speak:pratingB、expend:extravagantC、behave:rudeD、wa
Pleasesweepupalltheglass______beforeanyonestepsonthem.A、chunksB、chips
Almost20,000whaleshavebeenslaughteredsincea【B1】______oncommercialwh
ReadthetextbelowandanswerQuestions14-20.AdultEducationC
【说明】你是EB公司的Kate,刚从英国出差回来,在英国期间得到了LH公司的AnneGreen小姐的照顾,你想写一封电子邮件表示感谢。【内容】
根据《水利工程质量监督管理规定》,水利工程建设项目质量监督方式以( )为主。A
对此为村庄或集镇标志。
仰卧举腿动作的原动肌为()。A.臀大肌 B.腹直肌 C.髂腰肌 D.肱
考试命题的质量指标主要有() ①信度②效度③区分度④难度 A、①②③B
某市一初中在市举办的地方文化节期间,利用学校地处市中心的位置,将操场改为临时停车
最新回复
(
0
)