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
2010-01-14
62
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 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.
4.The mathematical model recommended by Britain’s National Radiological Protection Board(NR- PB)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 programme,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."0n 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
B
解析
短文第三段第一句话提到“巴伦西亚理工大学的研究人员分析了11个社区门诊用X射线检查16万以上女性的结果”,由此可以看出,这一段主要讲的是“分析研究X射线检查的结果”,故选B。
转载请注明原文地址:https://kaotiyun.com/show/ovmd777K
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
DEALINGWITHWASTEPLASTICEveryyearpeoplethrowawaymillionsoftonnesofplasticbottles,boxesandwrapping.Thesecr
DEALINGWITHWASTEPLASTICEveryyearpeoplethrowawaymillionsoftonnesofplasticbottles,boxesandwrapping.Thesecr
DEALINGWITHWASTEPLASTICEveryyearpeoplethrowawaymillionsoftonnesofplasticbottles,boxesandwrapping.Thesecr
"Peter,you’veeatenalltheice-cream?saidhismother.accusedPeter’smother____________________alltheice-cream.
THOMASEDISONOnthenightof21October1931,millionsofAmericanstookpartinacoast-to-coastceremonytocommemorate
THOMASEDISONOnthenightof21October1931,millionsofAmericanstookpartinacoast-to-coastceremonytocommemorate
THOMASEDISONOnthenightof21October1931,millionsofAmericanstookpartinacoast-to-coastceremonytocommemorate
WILLIAMTHEHERO!BraveWilliamBaldock,whoissixyearsold,isaheroafterhelpinghismotherwhenshefelldownstairs
WILLIAMTHEHERO!BraveWilliamBaldock,whoissixyearsold,isaheroafterhelpinghismotherwhenshefelldownstairs
随机试题
关于垂体的叙述正确的是()。
王甲和王乙是父子,王乙于2004年前往澳大利亚工作,后定居于悉尼,出国期间对其父王甲不闻不问。王甲由于年老体衰,又无任何经济来源而生活陷入困顿,于是向我国人民法院提起诉讼,要求王乙履行扶养义务。下列说法错误的是()
排除有爆炸危险的可燃气体、蒸汽或粉尘气溶胶等物质的排风系统,当防爆通风机不能满足技术要求时,可采用()。
票据权利取得的方式有()。
下图为四位同学分别绘制的某局部海域8月表面水温图(单位:℃)。读图,回答下列问题。四位同学绘制的图中,正确的是()。
2013年1月8日,甲市A区居民吉某与该市B区居民童某因在地铁上争座位而发生争执,二人大打出手。五分钟后被周围群众拉开。尔后,童某前往隔壁车厢,并在该市C区的某站下车。吉某觉得在斗殴中吃亏,遂在童某下车后尾随童某伺机报复。当童某行至该市C区一胡同时,吉某趁
当北京炎热多雨时,意大利首都罗马的季节是______。
阐述无意思联络的数人侵权行为的概念、构成要件与责任。[南京大学2009年研]
若方程x2+ax+1=0的两个根x1,x2满足:1/x1+1/x2=5,则x13+x23=()。
数据的逻辑独立性是指当数据的______改变时,通过系统内部的自动映像或转换功能,保持了数据的局部逻辑结构不变。
最新回复
(
0
)