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
British cancer researchers have found that childhood leukaemia is caused by an infection and clusters of cases around industrial
British cancer researchers have found that childhood leukaemia is caused by an infection and clusters of cases around industrial
admin
2014-09-27
36
问题
British cancer researchers have found that childhood leukaemia is caused by an infection and clusters of cases around industrial sites are the result of population mixing that increases exposure. The research published in the British Journal of Cancer backs up a 1988 theory that some as yet unidentified infection caused leukaemia—not the environmental factors widely blamed for the disease.
"Childhood leukaemia appears to be an unusual result of a common infection," said Sir Richard Doll, an internationally-known cancer expert who first linked tobacco with lung cancer in 1950. "A virus is the most likely explanation. You would get an increased risk of it if you suddenly put a lot of people from large towns in a rural area, where you might have people who had not been exposed to the infection. " Doll was commenting on the new findings by researchers at Newcastle University, which focused on a cluster of leukaemia cases around the Sellafield nuclear reprocessing plant in Cumbria in northern England. Scientists have been trying to establish why there was more leukaemia in children around the Sellafield area, but have failed to establish a link with radiation or pollution. The Newcastle University research by Heather Dickinson and Louise Parker showed the cluster of cases could have been predicted because of the amount of population mixing going on in the area, as large numbers of construction workers and nuclear staff moved into a rural setting. "Our study shows that population mixing can account for the (Sellafield) leukaemia cluster and that all children, whether their parents are incomers or locals, are at a higher risk if they are born in an area of high population mixing," Dickinson said in a statement issued by the Cancer Research Campaign, which publishes the British Journal of Cancer.
Their paper adds crucial weight to the 1988 theory put forward by Leo Kinlen, a cancer epidemiologist at Oxford University, who said that exposure to a common unidentified infection through population mixing resulted in the disease.
According to the passage, which of the following is true? ______
选项
A、Most people believe childhood leukaemia is due to environmental factors.
B、Population mixing best explains the cause of childhood leukaemia.
C、Radiation has nothing to do with childhood leukaemia.
D、Children born in a large town are at higher risk of leukaemia.
答案
A
解析
第一段最后一句话证明[A]是正确的,[B]不对,因为人口混居是造成这种病多发的原因,而非致病的原因;[C]不对,因为尽管文中说没有确定这种病和辐射的关系,但并不表示它和辐射没有关系;[D]不对,因为这种病的高发区是人口混居区而非大城镇。所以正确答案应当为[A]。
转载请注明原文地址:https://jikaoti.com/ti/ZHfsFFFM
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
StandardEnglishisthevarietyofEnglishwhichisusuallyusedinprintandwhichisnormallytaughtinschoolsandtonon-nat
Rabiesisanordinarilyinfectiousdiseaseofthecentralnervoussystem,causedbyavirusand,asarule,spreadchieflybydo
Forwhomdidthespeakerprobablysaythispassage?
Excite’sUniversalInbox:AMixedBagIfinformationiscomingatyoufrommomanydirections,Excite@Home’sExciteInbox
Thetopicofthoughtisoneareaofpsychology,andmanyobservershaveconsideredthisaspectinconnectionwithrobotsandcom
ThewomanisgoingtotalktoProfessorSmithabout______.
Thursday最后一个话轮交代了男士给出结果的时间:YoumaycallmeonThursdaynight,考生只要听清了这一句即可作答。
pool在第二个话轮中女士描述自己的活动时,第六句即指出;AndthenIsometimes...inmypool。注意本题也可由常识得出答案,因为游泳(swim)只能在她自己的游泳池中进行。
lesssleeping(orlosingsleeping)上网成瘾最直接的害处就是休息时间少了,对话中提到一项调查显示许多人认为Internet是他们睡眠不足的原因之一,所以答案应该写lesssleeping或losingsleeping才对。
amongadvertisements此题从上下文中可以得到线索,报纸老登一些错误的东西,当它们不得不订正时,他们会把勘误放在广告当中,所以advertisement肯定要用复数形式。
随机试题
人生的自我价值
小儿腹泻致代谢性酸中毒的最主要原因是
某机械设备安装工程项目,业主拟通过招标确定施工承包商,业主经过资格预审确定了A、B、C、D、E、F6家投标人作为潜在投标人,这6家潜在投标人在投标时出现以下情况:A投标人在编制投标文件时主要依据设计图纸、工程量表、其他投标人的投标书、有关法律法规等。B投
2006年1月8日,国务院发布了(),明确了各类突发公共事件分级分类和预案框架体系,规定了国务院应对特别重大突发公共事件的组织体系、工作机制等内容,是指导预防和处置各类突发公共事件的规范性文件。
霍桑试验中,职工的“士气”主要取决于()。
新石器时代是指使用磨制石器的时代。
民族精神是一个民族赖以生存和发展的精神支撑。中华民族精神的核心是自强不息。()
根据以下资料,回答116-120题。与1995相比,2006年各省、市农村居民人均纯收入位次有变动的有()。
编制好的程序,首先要确保它的正确性和可靠性,还应强调良好的编程风格。在书写功能性注解时应考虑()。
Aperson’shomeisasmuchareflectionofhispersonalityastheclotheshewears.Thefoodheeatsandthefriendswithwhom
最新回复
(
0
)