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
83
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
Peoplethought:Hey,eatacarpandyouwillbetakingin(what)itisthatgivesyouthese(fish)theirlong(life-span).Ofco
WhenJackwaseighteenhe______goingaroundwithastrangesetofpeopleandstayingoutverylate.
Whatisitthatbringsaboutsuchanintimateconnectionbetweenlanguageandthinking?Istherenothinkingwithouttheuseof
Billcouldn’t______ananswerwhentheteacheraskedhimwhyhewaslate.
Hisexpenditureonholidaysandluxuriesisratherhighin______tohisincome.
Onebusyday,Iwasracingaroundtryingtogettoomuchdone,andIexclaimedtomythreekidsinthecar,"Wecangetboththi
Onebusyday,Iwasracingaroundtryingtogettoomuchdone,andIexclaimedtomythreekidsinthecar,"Wecangetboththi
Whenconfrontedwithsuchquestions,mymindgoes______,andIcanhardlyremembermyowndateofbirth.
TheNationalTrustinBritain,togetherwithsimilarvoluntaryorganization,playsanincreasinglyimportantpartinthepreserv
Theworldisfilledwithmanyinterestingsounds.Someareunpleasanttoourearswhileothersarevery【46】tohear,inasingle
随机试题
药性寒凉,功能开窍的药是
3岁小儿,因生长发育迟缓来院就诊,表现为身材矮小、智力落后。经检查诊断为先天性甲状腺功能减低症。对于此类疾病,为预防神经系统功能损害应当及时开始治疗。正确的时间是
女性青春期开始的标志是
犬库欣综合征的典型临床特征是
男,70岁。既往无高血压病史,有失眠史。体检发现血压为180/85mmHg。3天后复查血压为165/86mmHg,超声心动图正常,肝肾功能正常。本例血压增高的可能原因是
A、泻下作用峻烈B、泻下极微,并凉血化瘀止血C、泻下稍缓,清上焦实热D、泻下缓和,减轻腹痛,并增强活血祛瘀E、泻下作用减弱,以消积化瘀为主酒大黄()。
A、虫蛀B、吸湿C、结块D、粘连E、软化中药散剂易
电动机减压启动中,软启动器除了完全能够满足电动机平稳启动这一基本要求外,还具备的特点是()。
下列关于上市公司公司债券投资者权益保护制度的表述中,符合证券法律制度规定的是()。
Whowantstopayfor"D"-qualityplumbing(管道)?Flytheskieswitha"D"-ratedpilot?Settle【C1】______a"D"restaurant?Exa
最新回复
(
0
)