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
66
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、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。根据句(17)可知,David Sarnoff预测,总有一天,每个家庭都将拥有无线电收音机。因此D为正确答案。
转载请注明原文地址:http://tihaiku.com/zcyy/3151847.html
相关试题推荐
Theyoungwomanwasplayinghardtogetbutactuallyshewantedtogoonadate
Whatisthenewsitemmainlytalkingabout?[originaltext]TheUnitedNations
MichaelSchumachergotinjuredwhilehewas______.[originaltext](29)TheGer
TheunemploymentrateinFebruarywas______.[br][originaltext]Thedeepdo
TheunemploymentrateinFebruarywas______.[originaltext]Thedeepdownturn
HowmanyvehicleswillberecalledbyToyota?[originaltext]Drivingalatem
Whyarethebeescalled"AfricanizedHoneyBees"?[br][originaltext]These
Whyarethebeescalled"AfricanizedHoneyBees"?[br][originaltext]These
Wecaninferfromthespeakerthat______.[br][originaltext]Today,Iwant
Whatisthepurposeofthisconversation?[br][originaltext]M:Hello.Ineedt
随机试题
DothefollowingstatementsagreewiththeviewsofthewriterinReadingPassag
Mostpeoplehavenoideaofthehardworkandworryaboutgoingintocollect
Historianstendtotellthesamejokewhentheyaredescribinghistoryeduca
Languageswillcontinuetodiverse.EvenifEnglishweretobecometheunive
婴幼儿最常见的贫血是A.地中海贫血 B.营养性缺铁性贫血 C.再生障碍性贫血
在原发病的基础上,继而发生新的疾病是指A:感而即发B:伏而后发C:徐发D:
2020年下半年,全国中心城市客运量不超过44亿人次的月份有几个?A.0
《城市居民委员会组织法》赋予居民委员会协助政府工作的职能不包括()。A.社会治安
2020年11月21日,某公司购入一项固定资产直接交付使用。该固定资产原值500
税务机关对纳税人下列行为中要求提供纳税担保的有()A.纳税人偷税以后 B.纳
最新回复
(
0
)