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
Scientists working on a problem do not know and sometimes can’t even guess what the final result will be. Late on Friday, 8 Nove
Scientists working on a problem do not know and sometimes can’t even guess what the final result will be. Late on Friday, 8 Nove
admin
2009-06-15
89
问题
Scientists working on a problem do not know and sometimes can’t even guess what the final result will be. Late on Friday, 8 November, 1895, Professor Rontgen, a German physicist, was doing an experiment in his laboratory when he noticed something extraordinary. He had covered an electric bulb with black cardboard, and when he switched on the current he saw little dancing lights on his table. (46); how then could any ray penetrate? On the table there were some pieces of paper which had been covered with metal salts. (47). Professor Rontgen took a piece of this paper and held it at a distance from the lamp. Between it and the lamp he placed a variety of objects, a books, a pack of cards, a piece of wood and a door key. The ray penetrated every one of them except the key. He called his wife into the laboratory and asked her to hold her hand between the lamp and a photographic plate. (48), but she held up her hand for a quarter of an hour, and when the plate was developed there was a picture of the bones of her hand and of the ring on one finger. The mysterious ray could pass through the flesh and not through the bone or the ring.
At a scientific meeting, Professor Rontegen called this new ray "the unknown", the X-ray.(49), and soon there were X-ray machines in all the big hospitals. The most obvious use for this discovery was to enable doctors to see exactly how a bone was fractured. Other uses came later. It was found that these rays could be used to destroy cancer cells, just as they destroyed the healthy cells of the doctors who first used the machines. (50), and the lungs could be X-rayed to show if there was any tuberculosis present.
A. It was on this paper that the lights were shining
B. She was very surprised by this request
C. Now the bulb was completely covered
D. It was a great invention
E. Methods were found later by which ulcers in the stomach could be located
F. Doctors quickly saw how this could be used
选项
答案
E
解析
意为:溃疡的位置被找到了。
转载请注明原文地址:https://kaotiyun.com/show/rz1d777K
本试题收录于:
职称英语卫生类C级题库职称英语分类
0
职称英语卫生类C级
职称英语
相关试题推荐
小谢是2011年9月来公司的,虽然时间短,但他做事一直很努力,很认真,同事们都很喜欢他。根据这段话,可以知道小谢:
Readthefollowingpassageanddecidewhichanswerbestfitseachspace.Forquestions26~45,markoneletterA,B,CorDo
Whilestillinitsearlystages,welfarereformhasalreadybeenjudgedagreatsuccessinmanystates,atleastUNisgettingp
Therearemanydifferentreasonswhyfashionissuchapowerfulculturalandeconomicinfluenceindevelopedsocietiesatthebe
Whenwespeakofabasichumanneed,wemeansomethingwhichisnecessarytolife,somethingthatwecannotpossiblydowithout.
Lookatthetenstatementsforthispart.Youwillhearastoryaboutajewellerydesigner.Decidewhethereachstatemen
Lookatthetenstatementsforthispart.Youwillhearapassageabout"AResearchonSleep".Youwilllistentoittwice.
Youaregoingtoreadamagazinearticleaboutlearningtoflyaplane.Eightparagraphshavebeenremovedfromthearticle.Cho
CancerChatisdifferentfromotherforumsinthatAllthestatementsaboutthemessagespostedonCancerChataretrueEXCEPT
Inthepast,doctorscouldn’tdoanythingaboutstomachulcers.Stomachulcerscanleadtostomachcancer.
随机试题
龙门铣床垂直铣头垂直进给时出现爬行现象,其原因之一是垂直铣头溜板的镶条、压板调整得过紧。()
当套类工件内孔精度很高,而加工时工件扭转力矩很小时,可选用__________定位。
余某,现年35岁,2004年药学专业大学本科毕业,到某市人民医院药剂科工作。2010年经国家执业药师资格考试取得执业药师资格。2011年,碍于情面,利用自己的证件替亲戚李某办理药品经营许可证、执业药师注册证,并担任药店负责人,但不参与实际经营。2013年因
某市一日化公司为增值税一般纳税人,主要生产高档化妆品,2020年12月发生以下业务:(1)从国外进口一批散装化妆品,关税完税价格为250000元,关税税率为40%。(2)将进口化妆品的70%生产加工为成套化妆品,本月销售4000套,每套不含税价格为50
传说中畲族的始祖是( )。
在世界医学史上最早发明麻沸散的人是()。
某省纺织工业总公司是以经营纺织原材料为主的企业,在当前纺织行业不景气、产品滞销、效益滑坡的情况下,请你谈谈省纺织工业总公司走出困境的思路和对策。
A、 B、 C、 D、 D下面表格中的两个数分别是图形中黑点和白圈的数目。从每行来看,黑点数目依次减1,白圈数目依次加1,所以应选择只有7个白圈的圆形。
上海商务总会
有些时候法庭判决合同当事人的身份错误不足以免除合同,因为合同当事人是希望同站在他面前的人订立合同。然而,在别的案件中,法庭判决,合同双方身份错误非常重要,这样的错误将导致合同无效。若发生身份错误,什么情况会导致合同成立,什么情况会导致合同不成立?
最新回复
(
0
)