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
Researchers have known that secondhand smoke can be just as dangerous for nonsmokers as smoking is for smokers, but now there’s
Researchers have known that secondhand smoke can be just as dangerous for nonsmokers as smoking is for smokers, but now there’s
admin
2011-01-10
50
问题
Researchers have known that secondhand smoke can be just as dangerous for nonsmokers as smoking is for smokers, but now there’s fresh evidence quantifying just how hazardous the after-burn from cigarettes can be, and how quickly it affects your body. Scientists at the Oregon Department of Health documented for the first time an hourly buildup of a cancer- causing compound from cigarette smoke in the blood of nonsmokers working in bars and restaurants in the state.
Reporting in the American Journal of Public Health, the researchers found that waitstaff and bartenders working a typical night shift gradually accumulated higher levels of NNK, a carcinogen in cigarette smoke, at the rate of 6% each hour they worked. NNK is known to be involved in inducing lung cancer in both lab rats and smokers.
"We were somewhat surprised by the immediacy of the effect and the fact that we could measure the average hourly increase," says Michael Stark, the lead author of the study and a principal investigator at the Mulmomah County Health Department in Oregon.
The authors are confident that the increases in NNK in the workers they tested most likely came from their exposure to smoke—the study included a control group of similar subjects in restaurants where no smoking was allowed. "There is experimental evidence from studies where you put nonsmokers in a room, blow smoke into the room and measure their artery function, that you see the platelets get sticky, which can cause clots and lead to a heart attack, and the ability of the arteries to dilate decreases very rapidly," says Dr. Matthew McKenna, director of the office on smoking and public health for the Centers for Disease Control.
All of which could mean more time loitering outside buildings and in alleyways for smokers intent on grabbing a puff. Thirteen states now prohibit smoking in restaurants altogether (most of these include bars as well), and while 11 states still put no restrictions on lighting up, individual cities within those states—such as Austin in Texas, for example have passed legislation banning smoking in eating establishments and other public areas.
It’s just getting harder to refute the scientific evidence; in a study done in Scotland several months after that nation instituted a ban on smoking in public places, researchers found that following the ban, bar patrons showed stronger lung capacity and reduced levels of inflammation (a red flag for a number of chronic diseases, including heart disease and asthma). "We made it pretty clear that the science on this is pretty irrefutable," says McKenna. And if smokers have fewer places to smoke, that message may finally get heard.
What, according to the passage, makes the research conducted by the scientists at the Oregon Department of Health so unique?
选项
A、The fact that the scientists managed to measure the average hourly increase of NNK.
B、The fact that the scientists succeeded in making more people realize the harm of smoking.
C、The fact that the scientists did a lot of experiments on smokers in public areas.
D、The fact that the scientists discovered NNK, a carcinogen in cigarette smoke.
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/qDcO777K
本试题收录于:
NAETI中级口译笔试题库外语翻译证书(NAETI)分类
0
NAETI中级口译笔试
外语翻译证书(NAETI)
相关试题推荐
Constructionofthegiganticofficebuildinginthiscitywasforyearsintermittent.
Manystudentsagreedtocome,butsomestudentsagainstbecausetheysaidtheydon’thavetime.
Ifbeingcarriedoutsuccessfully,theplanwillcompletelychangethetrafficconditionsinthecity.
WerealizedthatJohnwasstillyoungandimpressionable,butwereneverthelesssurprisedathis______.
ExercisingtoMusicPumpsupBrainPowerIfmusicmakesyousmarter,andexercisehelpsbrainfunction,canexercisingtomus
Thebankrequiresthattherealestatecompanynaturallyserveasaloan________foritscustomers.
下面你将听到的是一段有关矿产开发的讲话。中国经济高速发展,需要大量的矿产品及相关的能源与原材料加工制品。每年消耗的矿石量达60多亿吨,位居世界前列。中国政府为实现经济的可持续发展,在矿产资源勘查、开发领域制定了一系列的法律、法规和政策,
A、About23years.B、About27years.C、About30years.D、About13years.A根据第二段第一句“...constructionscheduledtostartin2007and
A、ItsentthembacktoSpain.B、IthadconstantphonecontactwiththeSpanishConsulinIstanbul.C、IttreatedtheminSpanish
体育赛事充满精彩时刻,但也许没有什么能比得土跑完马拉松的那一刻,那是所有赛事中最长、最艰苦的。“马拉松”一词来自希腊的一个村庄,公元前490年在那里发生一次著名的战争。希腊人战胜了波斯人,一个士兵一直从马拉松跑到了雅典(大概有40多公里)去传递这个好消息
随机试题
下列有关程序和软件的描述中不正确的是()
试述产伤性臂丛神经麻痹的分类。
患者,女性,18岁。2个月前发现右股骨下段包块伴疼痛,X线片显示右股骨下段干骺端骨质破坏,周围有软组织包块,病灶内可见肿瘤性成骨,经穿刺活检病理证实为骨肉瘤。患者应该进行的进一步检查有
某地2年的3种死因别死亡率,若用统计图表示出来,可选用
不引起肝脂肪变性的是
患者常见虚烦失眠,心悸健忘,头晕耳鸣,咽干,腰膝酸软,多梦遗精,潮热盗汗,小便短赤,其词属()。
直径为D的受扭实心圆杆,其最大许可荷载为P,若将其横截面面积增加一倍,则其最大许可荷载为( )。
对项目生产工艺方案进行比选的目的,是为了确定产品生产过程技术方案的()。
合同文件是索赔的最主要依据,其中包括()。
关于图书标题版式设计要求的说法,正确的是()。
最新回复
(
0
)