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
Arsenic, a naturally occurring poison and carcinogen found in ground water, is strongly linked to adult-onset diabetes, U. S. re
Arsenic, a naturally occurring poison and carcinogen found in ground water, is strongly linked to adult-onset diabetes, U. S. re
admin
2011-02-25
84
问题
Arsenic, a naturally occurring poison and carcinogen found in ground water, is strongly linked to adult-onset diabetes, U. S. researchers said on Tuesday. Odorless, tasteless, colorless and easily soluble in water or wine, arsenic has long been a feared poison. A heavy dose is detectable in a corpse, but researchers say small amounts of arsenic may sicken people gradually.
Dr. Ana Navas-Aeien and colleagues at Johns Hopkins University in Baltimore found a " relatively strong " association between commonly found levels of arsenic in urine and type 2 diabetes in a study of American adults. " It seems there is maybe no safe level of arsenic. " Navas-Acien said in a telephone interview. " Worldwide it’s a huge problem, " she said. " As water becomes a scarce resource. the situation becomes even more serious. "
Arsenic raises the risk for cancers of the bladder, lung, kidney, skin and, possibly, the pros tate, Navas-Acien said. The 20 percent of nearly 800 study participants who had the most arsenic in their bodies, a tolerable 16. 5 micrograms per liter of urine, had 3. 6 times the risk of developing late-onset diabetes than those in the bottom 20 percent, who had 3 micrograms per liter. Levels of arsenic were 26 percent higher in people with late-onset, or type 2, diabetes than those without the disease, the study found.
The U. S. government sets a limit for drinking water at 10 micrograms of arsenic per liter, which is exceeded in the water consumed by 13 million Americans who mostly live in rural areas that rely on wells to bring up ground water, the researchers wrote in the Journal of the American Medical Association. Arsenic contaminates drinking water for millions of people in Bangladesh, parts of Central Europe, Chile, Argentina and the western United States, where ground water is the source of drinking water and the land has higher concentrations of arsenic.
Overall, 7. 8 percent of Americans are believed to have diabetes, although some do not know it. At least 90 percent of cases are the type 2 variety, in which the body loses its ability to use insulin properly. Navas-Acien said arsenic may play a significant role in diabetes incidence, but it is difficult to say how much. Arsenic can accumulate in the body, and can ruin the body’s ability to use insulin and perform the vital task of converting blood sugar into energy. Normally, insulin fits into cells via molecular doorways called receptors, which in turn signal the cell to move glucose inside, but arsenic enters the cell and somehow blocks the activity. Seafood is another source of arsenic, but the organic form found in shellfish and some fish has a carbon molecule attached and poses no risk to health, she said.
The situation of arsenic in water causing diabetes is worsened by______.
选项
A、the scarcity of water resources
B、the limited access to medicines
C、the level of arsenic in water
D、type 2 diabetes worldwide
答案
A
解析
细节题;题目中的“...is worsened by”在原文中的对应表达是“the situation becomes even more serious”,所以我们这里需要的答案就是原文中“As water becomes a scarce resource”的同义表达,比较阅读4个选项,A选项的表达是与其一致的。需要考生注意的是,其他几个选项在第二段中都有所体现,在这种情况下,需要考生对于题目在原文中的定位这一项阅读能力进行强化,在真实的考试中,以正确的定位为选项的分析和题目的解答奠定扎实的基础。
转载请注明原文地址:https://kaotiyun.com/show/AYZ4777K
0
考研英语一
相关试题推荐
Thoughsomepeoplehavesuggestedthatwomenshouldreturntohouseworkinordertoleave(1)_____jobsformen,theideahasbe
ApproximatelywhatpercentageofthepopulationinIndiamostprobablyobservesthecustomofarrangedmarriage?______Accordin
ArecenthistoryoftheChicagomeat-packingindustryanditsworkersexamineshowtheindustrygrewfromitsappearanceinthe
ThecrimenovelmayberegardedasWhatismentionedinthepassageasoneofthesimilaritiesbetweenthedetectivestoryand
Ascientistwhodoesresearchineconomicpsychologyandwhowantstopredictthewayinwhichconsumerswillspendtheirmoney
Ascientistwhodoesresearchineconomicpsychologyandwhowantstopredictthewayinwhichconsumerswillspendtheirmoney
Scienceisthenever-endingstruggletofindtruth.Youmaydismissthisstatementastheramblingofanamateurphilosopher,bu
Imagineleavingwork,gettinginyourcarandstartingdinnerwhiledrivinghome.That’sjustonefunctionofthehomeofthef
Imaginebeingaskedtospendtwelveorsoyearsofyourlifeinasocietywhichconsistedonlyofmembersofyourownsex.Howw
Imaginebeingaskedtospendtwelveorsoyearsofyourlifeinasocietywhichconsistedonlyofmembersofyourownsex.Howw
随机试题
简述语义的模糊性。
Thedeancan’tseeyouatthemoment.Heisaddressingthefirst-yearstudentsinthelecturehall.
症见颈前喉结两旁结块肿大,按之较硬或有结节,肿块经久未消,胸闷,纳差,舌质暗紫,苔薄白,脉涩,辨证为
A.内听道扩大及早期耳聋、耳鸣B.咖啡样色素斑C.泌乳、闭经D.灌注压突破E.皮毛窦神经纤维瘤病
下列哪一项不属于平安险的责任范围()。
混凝土基础施工过程中的质量检查,即在制备和浇筑过程中对()配合比和坍落度等的检查。
下列利率中,是由非政府部门的民间金融组织,如银行业协会等确定的利率是()。
在初中欣赏课《游击队歌》中,教师为大家讲述抗日战争时期,日军对我国冀中抗日根据地发起了大扫荡。高家庄的村主任和当地的民兵小队,把山洞、地窖修建成了多户人家相同的地道,配合八路军主力部队,一举歼灭进犯高家庄的敌人的故事。随后,教师引出本节课主题《游击队歌》。
怎样判断稿件所写内容是否有新意?
AttheEuropeanCommissioninBrussels,theyhaveajokeabouttheworkinterpretersdo--"Languages",theysay,"havenothing
最新回复
(
0
)