首页
登录
职称英语
When was the first actual radio broadcast made? [br] [originaltext] It was a
When was the first actual radio broadcast made? [br] [originaltext] It was a
游客
2023-11-02
40
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.(14)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.(15)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?(16)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.(17)This was radio pioneer, David Sarnoff, who predicted that one day there would be a radio receiver in every home.
选项
A、Military communications officers.
B、People who treated radio technology as a hobby.
C、People who lived in big cities.
D、People with an interest in music.
答案
B
解析
语义理解题。根据句(16)可知,只有那些喜爱无线电的人才有接收机。因此B为正确答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3151846.html
相关试题推荐
Whatarethemanandthewomanmainlydiscussing?[br][originaltext]W:Hi,Jim
Whatarethemanandthewomanmainlydiscussing?[originaltext]W:Hi,Jim.What
Themandoesn’twanttogotouniversitybecause______.[br][originaltext]W:A
Themandoesn’twanttogotouniversitybecause______.[br][originaltext]W:A
Whatcanwelearnaboutthewoman?[br][originaltext]M:So,(l-l)haveyoufo
WhichofthefollowingdidNOTlaunchthe"roadmap"planin2003?[originaltext
WhatdoesthemanwanttoknowfromJessica?[br][originaltext]M:Hi,Jessica!
WhatdoesthemanwanttoknowfromJessica?[br][originaltext]M:Hi,Jessica!
WhatdoesthemanwanttoknowfromJessica?[originaltext]M:Hi,Jessica!Didy
Whatkindofaccommodationdoesthewomanneed?[originaltext]M:Goodmorning.C
随机试题
IsCollegeReallyWorththeMoney?TheReal
Whatcanbedoneaboutmassunemployment?Allthewiseheadsagree:there’re
[originaltext]VirtuallyeveryAmericancanrecognizeadollarbillatamere
盐酸普鲁卡因降解的主要途径是A.脱羧 B.水解 C.氧化 D.聚合 E.
试样中巨粒组土粒质量少于或等于总质量的30%,且巨粒组土粒与粗粒组土粒质量之和多
下列选项中,不得成为持有证券公司5%以上股权的股东的有()。 ①因故意犯罪被
中药胶囊剂需做的检查有A.装量差异 B.崩解时限 C.水分 D.A+B+C
企业在生产过程中,要最大限度减少生产物料装运的频率和缩短搬运的距离,这体现了企业
共用题干 女,48岁。口腔黏膜粗涩感半年,检查发现其舌背左右各一黄豆大小白色病
最新回复
(
0
)