首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
When were the first x-rays discovered?
When were the first x-rays discovered?
admin
2019-05-09
33
问题
When were the first x-rays discovered?
Karl Wilhelm Rontgen(1845 - 1923) astounded people with the first x-rays in 1895: this was followed three years later by the discovery of radium by Pierre and Marie Curie. But who were they? In 1894, Marie and Pierre Curie met while studying in Paris. Their marriage on 25 th July 1895 marked the start of a partnership which was to receive worldwide recognition.
The Curies discovered radium, a radioactive substance , in uranium oxide ore. They developed techniques for extracting it, but first did not fully understand its properties. Pierre Curie used to carry radium around in his waistcoat pocket and could not understand why he was developing a massive sore on his chest. This would have been fatal, but Pierre’ s life was cut short in 1906 when he was knocked down and killed by a horse and cart in the street. From then on, Marie devoted herself to completing the work that they had begun together.
Marie and Pierre Curie were awarded a joint Nobel Prize in 1904, followed up by a second one for Marie in 1911. Their research was crucial in the development of x-rays in surgery. During World War I Marie Curie helped to equip ambulances, which she drove to the front lines, with x-ray equipment. The International Red Cross made her head of its Radiological Service and she held training courses for medical orderlies and doctors in the new techniques.
Despite her success, Marie faced great opposition from male scientists in France and she never received the recognition she deserved. She died in 1934 from leukaemia, due to exposure to high-energy radiation used in her research. Radiation has since been used to treat cancer worldwide.
选项
A、In 1894.
B、In 1895.
C、In 1904.
D、In 1911.
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/G1Cd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
ACanadianresearcherhasdiscoveredthatsoundtravels【21】______airmorethanone-halfkilometeranhourslowerthanhadb
WheredomostBritishyoungpeoplespendtheirsparetime?
Industrial【21】______doesnotjusthappen.Companies【22】______lowaccidentratesplantheirsafetyprograms,workhard
Whatarenon-readers,accordingtothefirstspeaker?
Mostpeoplewhotravellongdistancescomplainofjetlag(喷气飞行时差反应).Jetlagmakesbusinesstravelerslessproductiveandmorepr
AuniversitystudentinNairobi,Kenya,wasstoppedforatrafficviolationtheotherday.Thepolicemantookouthisticketboo
(61)Environmentalistsandactivistsaccusedtheworld’srichnationsofmanagingaglobalconferenceongeneticallymodifiedfoo
Thereisonekindofpainforwhichnobodyhasyetfoundacure--thepainthatcomesfromtheendingofarelationship.Therela
Youareallowed35minutestowriteacompositiononthetopic:Friendship.Youshouldbaseyourcompositiononthefollowingou
Mancannotcontinue【C1】______hisnumbersatthepresentrate.Inthe【C2】______thirtyyearsmanwillfaceaperiodofcrisis.【C3】
随机试题
少焉,月出于东山之上,徘徊于斗牛之间。答案:
A.急性心功能不全B.急性肾衰C.弥散性血管内凝D.急性呼吸窘迫综合征E.急性肝功能不全患者因急性肠梗阻,小肠坏死行小肠部分切除术,术后当天出现呼吸急促,端坐呼吸,咳泡沫样痰,最可能是()
A.末端回肠B.直肠C.回盲部D.十二指肠球部E.胃
下列各项中,通过“应付职工薪酬一福利费”来核算的有()。
银行发放贷款时涉及的信贷额度是指借款人与银行在协议中规定的允许借款人借款的最低限额。()
依法治国的对象有()。
开汽车、打篮球、跳健美操等属于_______技能。
将目前低水平的、不全面的、发展很不平衡的小康社会。发展成为更高水平、内容比较全面丰富、发展较为均衡的小康社会,包括经济、政治、文化、社会和生态等多方面的内容。这是我国()。
•Lookatthenotesbelow.•Youwillheartwocolleaguestalkingonthephone.ITDepartmentMessage
Hestandsaccusedofdestroyingthepartyin______ofhispresidentialambitions.
最新回复
(
0
)