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 Every year millions of women are screened with X-rays to pick up signs of breast cancer. If this happens early e
Screen Test Every year millions of women are screened with X-rays to pick up signs of breast cancer. If this happens early e
admin
2010-01-14
37
问题
Screen Test
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 Australia, Canada, the US and Spain, screen women under 50.
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 analysed 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.
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.
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 programme, they say, detects between 300 and 450 eases of breast cancer in every 100,000 women screened.
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.
“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 programme.”
*
选项
答案
E
解析
E与题干生成:Delaying the age at which screening starts may reduce the risk of radiation triggering a cancer. 延缓用X射线检查的年龄也许能减少辐射诱发癌症的危险。答案在第六段。
转载请注明原文地址:https://jikaoti.com/ti/8oOsFFFM
本试题收录于:
职称英语理工类基础题库职称英语分类
0
职称英语理工类基础
职称英语
相关试题推荐
WhichstatementaboutBarthisNOTtrue?WhenBarthwasacollegestudent,heoftenshoppedatthriftshops______.
WaterResourceMorethanhalfofthewaterusedfordrinking,washingandirrigatingcomesfromundertheground.Thissubte
WaterResourceMorethanhalfofthewaterusedfordrinking,washingandirrigatingcomesfromundertheground.Thissubte
Majorproductcategoriesencompasselectronictestandmeasuringinstruments,solid-statecomponents,electroniccalculations.
Late-nightDrinkingCoffeelovers,becareful.Havingaquick"pick-me-up"cupofcoffeelateinthedaywillinterruptyour
Weconsumealotmorethanweareabletoproduce.
OilandEconomyCouldthebadolddaysofeconomicdeclinebeabouttoreturn?SinceOPECagreedtosupplycutsinMarch,th
HighStressMayDamageMemoryAccordingtoareportissuedinMay1998,elderlypeoplewhohaveconsistentlyhighbloodleve
Theresultsofthenewstudyareunexpected.Theresultsofthestudyareofgreatsignificancetopeopleeverywhere.
Theresultsofthenewstudyareunexpected.Fungusandmoldsinlocalfoodsmaybepartlyresponsibleforthehighcancerrate
随机试题
从企业固定资产周转看,企业固定资产的价值周转特点有()
眼窝凹陷,说明
某男,30岁,右下齿痛,疼痛剧烈,齿龈红肿,无龋齿,身热,舌红,苔薄黄,脉浮数。针灸治疗本病的取穴是()
坐骨棘间径平均是
下列付款方式中不属于汇付的是()。
某公司是一家发展迅速的企业,随着企业发展,公司的组织结构、技术条件等都发生了改变。公司在发展中不仅设立了新的职位,而且原有很多职位的工作内容和任职资格也发生了变化。但公司仍然沿用原有的职位说明书,造成职位说明书严重脱离实际。公司意识到了问题,决定聘请咨询机
张三于2015年6月来到某小城镇创业,当月用25万元购置一套88平方米的普通住房(张三名下没有其他住房),用20万元购置一间60平方米的临街商铺。为满足创业需要,当月他从某工厂用5万元购置了一辆该厂使用过的二手面包车(该厂能提供车购税和车船税完税凭证);从
在物业管理活动中,业主相互之间最本质的关系是()
阅读下面材料,回答问题。春天悄然而至,为让幼儿感受春天赋予我们生活的诗情画意,我(老师)教幼儿学习诗歌《春天的颜色》。在第一次语言活动中,为了激起幼儿的学习兴趣,让幼儿理解诗歌大意,我特别画了几幅有关春天美景的图画。但无论我怎么解释,孩子就是记不住诗句,
α、β是实系数方程χ2+2χ+2=0的两个虚根,则它们在复平面上对应的向量夹角的正弦值为().
最新回复
(
0
)