首页
登录
职称英语
Why were early radio broadcasts heard by such a small audience? [originaltext]
Why were early radio broadcasts heard by such a small audience? [originaltext]
游客
2023-11-20
71
管理
问题
Why were early radio broadcasts heard by such a small audience?
It was an Italian inventor who created the first wireless device for setting 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 with two short musical selections of poem and brief holiday greeting. The broadcast was heard by wireless operators on ships with a radio through several hundreds miles. The following year, De Forest began regular radio broadcasts in New York. These programs Were similar to much what we hear on radio today. In that, De Forest played only music. But because there were still no home radio receivers, De Forest’s audiences consisted only of 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? Hmm, 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 1920s 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、Few people owned the necessary equipment.
B、The music selection was not very popular.
C、Few ships came into New York harbor.
D、The radio signal was too weak to reach a mass audience.
答案
A
解析
转载请注明原文地址:https://www.tihaiku.com/zcyy/3204018.html
相关试题推荐
Howmanyattacksandclasheswerereportedinthisnews?[br][originaltext]
Howmanyattacksandclasheswerereportedinthisnews?[br][originaltext]
Howmanyattacksandclasheswerereportedinthisnews?[originaltext]Atta
Wheredoesthisconversationmostlikelytakeplace?[br][originaltext]M:Hell
Wheredoesthisconversationmostlikelytakeplace?[originaltext]M:Hello.May
Whatisthemaintopicofthisconversation?[br][originaltext]M:Weseemtob
______werereportedbytheweatherstationinChicago.[br][originaltext]
______werereportedbytheweatherstationinChicago.[br][originaltext]
______werereportedbytheweatherstationinChicago.[originaltext]Onthe
Howmanycarsaretowedfromthestreetseachyear?[originaltext]Oneofth
随机试题
Clearlyifwearetoparticipateinthesocietyinwhichwelivewemustcom
Everyeducationsystemisinevitablyamirrorthatreflectsthecultureoft
Todaywearegoingtopracticeevaluatingthemaintoolusedwhenaddressing
PassageTwo[br]Whatdoestheauthormeanbysaying"Tiethefirststeptoatr
Whatarethespeakersmainlydiscussing?[br][originaltext]M:Hi,Jane.Mindi
当供给和需求曲线移动时,引起均衡数量的变化不确定的情形有()。A、需求曲线和供
在教育行政关系中,其主体通常包括行政机关、学校、教职员工、学生。
从所给四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性: A.如图
储备仓库应布置在( )。A.城市郊区、水陆交通条件方便的地方,有专用的独立地段
药物与适宜的抛射剂装于具有特制阀门系统的耐压密封装置中制成的制剂()A.膜剂
最新回复
(
0
)