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
考研
British cancer researchers have found that childhood leukemia is caused by an infection and clusters of cases around industrial
British cancer researchers have found that childhood leukemia is caused by an infection and clusters of cases around industrial
admin
2012-05-19
70
问题
British cancer researchers have found that childhood leukemia 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 leukemia—not the environmental factors widely blamed for the disease.
"Childhood leukemia 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 leukemia cases around the Sellafield nuclear reprocessing plant in Cumbria in northern England. Scientists have been trying to establish why there was more leukemia 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) leukemia 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 leukemia is due to environmental factors.
B、Population mixing best explains the cause of childhood leukemia.
C、Radiation has nothing to do with childhood leukemia.
D、Children born in a large town are at higher risk of leukemia.
答案
A
解析
是非判断题。采用排除法。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没有在文中明确指出,D不对,因为这种病的高发区是人口混居区而非大城镇。第一段最后一句话证明A应当为正确的答案。
转载请注明原文地址:https://kaotiyun.com/show/PNp4777K
0
考研英语一
相关试题推荐
Publicityisanypromotionalcommunicationaboutanorganizationoritsproductsthatispresentedbythemediabutisnotpaid
Highoilpriceshavenotyetproducedaneconomicshockamongconsumingcountries,butfurtherrises,especiallysharp(1)_____,
Bycitingthedetailednumbersrelatedtotheplant,theauthorintendstoshowthatTotoday’sAmericans,productivityimprove
ThestudiescitedbytheNationalEatingDisordersAssociationaremadeamongItisimpliedinthelastparagraphthat
AreallygooddayforRobBoruckiwillbeadayFast-foodeatersmaynotabsolutelybeobesemainlybecause
Television—thatmostpervasiveandpersuasiveofmodemtechnologies,markedbyrapidchangeandgrowth—ismovingintoanewera,
Thekidswhogrewupon"StarTrek"can’tfind(1)_____wayaroundEarth.Americanscan(2)_____directtoEngland,butonly
Inthetwodecadesbetween1929and1949,sculptureintheUnitedStatessustainedwhatwasprobablythegreatestexpansionins
NiagaraisanIndianwordwhichmeans"roaringwater".Indeed,theroarofthefallingwaterofNiagaracanbeheard(1)_____a
NiagaraisanIndianwordwhichmeans"roaringwater".Indeed,theroarofthefallingwaterofNiagaracanbeheard(1)_____a
随机试题
下列不属于企业道德设计原则的是()
患儿男,7.5岁。上前牙外伤2小时,要求治疗。此上前牙的特点中错误的是
下列哪种情况不会见到血清钾增高
张某出差途中突发疾病死亡,被市社会保障局认定为工伤。但张某所在单位认为依据《工伤保险条例》,只有“在工作时间和工作岗位突发疾病死亡”才属于工伤,遂诉至法院。法官认为,张某为完成单位分配任务,须经历从工作单位到达出差目的地这一过程,出差途中应视为工作时间和工
水利工程建设总监理工程师实行()管理制度。
甲公司系上市公司,属于增值税一般纳税人,适用的增值税税率为17%;适用的所得税税率为25%。除特别说明外,甲公司采用账龄分析法计提坏账准备,3个月以内账龄的应收款项计提坏账准备的比率为0。甲公司按实现的净利润的10%提取法定盈余公积。甲公司20×
关于假性痴呆的特点,下列说法中不正确的是()。
【2014年陕西咸阳.判断】在班级管理中,班主任是班级的法人。()
参加大型团体表演的学生共300名,他们面对教练站成一排,从左到右按1、2、3、4、5……依次报数,教练要求全体学生牢记各自所报的数,并做下列动作:先让报的数是3的倍数的学生向后转;接着让报的数是5的倍数的学生向后转;最后让报的数是7的倍数的学生向后转,则此
A、TheywereprotectedbyastrongUnitedStatesNavy.B、Theyweresupportedbyawell-developedrailroadC、Mostcrewmembershad
最新回复
(
0
)