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
Screen Test 1 Every year millions of women are screened with X-rays to pick up signs of breast cancer. If this happens early eno
Screen Test 1 Every year millions of women are screened with X-rays to pick up signs of breast cancer. If this happens early eno
admin
2011-01-05
83
问题
Screen Test
1 Every year millions of women are screened with X-rays to pick up signs of breast cancer. If this happens early enough, the disease can often be treated successfully. According to a survey published last year, 21 countries have screening programmes. Nine of them, including Australia, Canada, the US and Spain, screen women under 50.
2 But the medical benefits of screening these younger women are controversial, partly because the radiation brings a small risk of inducing cancer. Also, younger women must be given higher doses of X-rays because their breast tissue is denser.
3 Researchers at the Polytechnic University of Valencia analyzed the effect of screening more than 160, 000 women at 11 local clinics. After estimating the women’s cumulative dose of radiation, they used two models to calculate the number of extra cancers this would cause.
4 The mathematical model recommended by Britain’s National Radiological Protection Board (NRPB) predicted that the screening programme would cause 36 cancers per 100,000 women, 18 of them fatal. The model preferred by the UN Scientific Committee on the Effects of Atomic Radiation led to a lower figure of 20 cancers.
5 The researchers argue that the level of radiation-induced cancers is "not very significant" compared to the far larger number of cancers that are discovered and treated. The Valencia programmer, they say, detects between 300 and 450 cases of breast cancer in every 100,000 women screened.
6 But they point out that the risk of women contracting cancer from radiation could be reduced by between 40 and 80 percent if screening began at 50 instead of 45, because they would be exposed to less radiation. The results of their study, they suggest, could help" optimize the technique" for breast cancer screening.
7 "There is a trade-off between the diagnostic benefits of breast screening and its risks," admits Michael Clark of the NRPB. But he warns that the study should be interpreted with caution. "On the basis of the current data, for every 10 cancers successfully detected and prevented there is a risk of causing one later in life, That’s why radiation exposure should be minimized in any screening programmer.
A. Harm Screening May Do to a Younger Woman
B. Investigating the Effect of Screening
C. Effects Predicted by Two Different Models
D. Small Risk of Inducing Cancers from Radiation
E. Treatment of Cancers
F. Factors That Trigger Cancers
Paragraph 5 ______
选项
答案
D
解析
第五段的第一句话说:研究人员争辩说,与被发现患癌症及其后接受治疗的癌症患者的数量相比,由辐射诱发癌症的数量是很小的。因此选D。
转载请注明原文地址:https://kaotiyun.com/show/camd777K
本试题收录于:
职称英语卫生类A级题库职称英语分类
0
职称英语卫生类A级
职称英语
相关试题推荐
Youaregoingtoreadamagazinearticleinwhichfivepeopletalkaboutrailwayjourneys.Forquestions22-35,choosefromthe
THEPAINTING0InthevillagewhereIgrewup,everyoneknewanoldman00whospentallofhistimewithpainting.Peoplewho
Ifinishedmyclassesat5andwenthometo______readyfortheconcert.
Archaeological.Archaeologicalstudycoversanextremelylongspanoftimeandagreatvarietyofsubjects.Theearliestsubj
AImprovementinResearchingDiseasesBTheResultsofPlantDiseasesCMistakemadeinDiagnosisDKillingInsectsEAMaj
Accordingtothefirstparagraph,whichofthefollowingisNOTaproblemofaging?Theexpression"iftheycanaffordtoretir
AAddressingaVarietyofBehavior-affectingFactorsBImportanceofImmunizationCRelationshipwithOtherHealthServicesD
CancerChatisdifferentfromotherforumsinthat"Thecharity"inthelastlinebutonerefersto
Itissaidthatthehousesalongthisstreetwillsoonbedemolished.
A.AvoidIsolationB.AdoptaPositiveAttitudetoLifeC.KeepYourMindActiveD.MaintainBalanceE.AcceptFailureF.Reduce
随机试题
脊髓灰质炎的好发年龄是
刚刚过了秋分________,就觉得突然增加了一些________。填入画横线部分最恰当的一项是()。
王某2008年5月份取得收入3800元,若规定起征点为1500元,采用超额累进税率,应税收入500元以下的,适用税率为5%;应税收入500~2000元的,适用税率为10%;应税收入2000~5000元的,适用税率为15%。则王某应纳税额为( )。
(2020年)2018年10月12日,甲医院向乙公司承租呼吸机10台,双方签订书面合同,约定:租期3个月,每台租金12000元,全部租金120000元于租期届满时一次性支付。双方未约定租赁期间的维修事项。2018年11月11日,1台呼吸机在正常使
集体合同中的一般性规定包括()。
本学期王老师接手了某班的化学课。开学第一天,他就让学生做了一份自编试题,以判断学生化学知识基础与能力的发展水平。这种测试属于()。
城市规划许可具有法律效力,其中所体现的方面不包括()。
费用支出最高的企业是( )利润最高的企业是( )
假如你被选为校研究生新生代表,将代表全体新生在校迎新大会上发言。请写一篇400字以上的演讲稿。
A、It’stoohigh.B、It’sacceptable.C、It’scheapindeed.D、Thewomanshouldhavebargainedforit.C[听力原文]W:Ispent$50onthi
最新回复
(
0
)