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
For decades many U.S. veterans who took part in atmospheric nuclear tests have wondered whether their exposure to radiation migh
For decades many U.S. veterans who took part in atmospheric nuclear tests have wondered whether their exposure to radiation migh
admin
2013-01-12
81
问题
For decades many U.S. veterans who took part in atmospheric nuclear tests have wondered whether their exposure to radiation might ultimately cost them their lives. Their private fears became a public issue in 1976 after a veteran claimed his leukemia was caused by radiation from a 1957 test series.
The atomic veterans and their families, as well as researchers and policy-makers, continue to struggle for definitive answers. These have been elusive, at least in part, because a crucial piece of information has been difficult to get--the radiation dose that each individual received.
In the largest study to date, researchers from the Institute of Medicine (IOM) have come up with some partial answers. But they too were limited in their ability to draw conclusions by the lack of usable information on radiation exposure.
The new study focused on participants in five series of nuclear tests, all of which took place either in the Nevada desert or the South Pacific. Nearly 70,000 soldiers, sailors, airmen, and marines were involved in at least one of these, and about 30 percent of them have now died. For comparison, researchers selected a group of 65,000 military people serving at the same time under similar conditions, except that they did not take part in nuclear tests.
After an intensive review of service and death records, researchers found no difference between the two groups in overall death rates or in total deaths from cancer. Had there been a dramatic radiation effect, it would have shown up in this comparison.The researchers also analyzed specific causes of death, including diseases linked in other studies to radiation. Here there were some differences. Among the nuclear test veterans, 14 percent more died from leukemia than those in the comparison group, although the difference lacked statistical significance and could have resulted from chance.
When comparisons were made based on whether the veterans participated in nuclear tests in Nevada or in the Pacific Ocean, the differences were sharper: a 50 percent higher leukemia death rate among Nevada atomic veterans than among the comparison group. This was not true among Pacific test participants, who actually had a slightly lower, though not statistically significant leukemia death rate than those in their comparison group.
The latest study includes a comparison made between ______.
选项
A、healthy veterans and unhealthy veterans
B、nuclear test participants and those with no radiation exposure
C、the veterans who are still alive and those who have died
D、people who died of cancer and people who took part in atomic tests
答案
B
解析
本题的依据句是第四段的“For comparison,researchers selected a group of 65,000 military people serving at the same time under similar conditions,except that they did not take part in nuclear tests.”,从中可知B项为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/L49O777K
0
考博英语
相关试题推荐
AnewcatastrophefacesAfghanistan.TheAmericanbombingcampaignisconspiringwithyearsofcivilconflictanddroughttocre
Theplacedidnotappeartobepopular,foritwascompletelydeserted,andinanycase______totraffic.
Whatisitthatbringsaboutsuchanintimateconnectionbetweenlanguageandthinking?Istherenothinkingwithouttheuseof
ThecrucialyearsoftheDepression,astheyarebroughtintohistoricalfocus,increasinglyemergeasthedecisivedecadeforA
Writeanessayofatleast250wordsbasedonthefollowingtopic.Yourwritingshouldincludeyourviewandsupportingdetails.
Perhapsthemostinterestingthingaboutthephenomenonoftaboobehaviorishowitcanchange【1】theyearswithinthesamesocie
Thebiggesttrendtodayintheworldoffashionisn’tsomuchwhatclothesyouarewearing,butratherwhat—orwhose—fragrancey
InarecentbookentitledThePsychicLifeofInsects,ProfessorBouviersaysthatwemustbecarefulnottocreditthelittlew
Itwouldbesurprisingfor______anyobjectionstotheproposal.
Theworldisfilledwithmanyinterestingsounds.Someareunpleasanttoourearswhileothersarevery【46】tohear,inasingle
随机试题
巨大儿
既能生津止渴,又能消肿排脓的药物是()
关于队列研究,下列哪项是正确的
计算机最主要的工作特点是()。
2012年7月1日,北京的最高气温达到35摄氏度,该数据属于()。[2012年初级真题]
关于抽样检验的描述正确的是()。
根据以下资料,回答问题。“十五”以来,广东省的产业集群发展迅速,特色产业基地已成为广东省经济持续高速增长的新亮点。据统计,2006年广东省特色产业基地工业总产值达4930亿元,约占全省工业总产值的10%;基地的高新技术产品产值1650亿元,占全省
Readingaloudandsilentreadingaretwodifferenttypesofreadingpractice.Eachhasafunctionintheteachingofreadingand
关于运动和静止的辩证统一关系,下列选项表述正确的是()
A、Useofcomputersinbanks.B、Conveniencesbroughtaboutbycomputersinbusiness.C、Significanceofautomationincommerciale
最新回复
(
0
)