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
60
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
Thetrafficpolicestoppedthreetrucksheavilyloadingwithmerchandisethatlookedasgrainbags.
Celebrate.Celebrate.PhysiciansaredelightedwithaFoodandDrugAdministration(FDA)advisorypanel’srecommendationearliert
Shouldwecareifover150knownspeciesofanimalshave【C1】______fromtheearthinthelastfiftyyears?Shouldwebeconcerned
Becauseexcessivelyhuntinghasdepletedmanywildlifespecies,gamepreservesarebeingestablished.
Thedoctorswereworriedbecausethepatientdidnotrecuperateasrapidlyastheyhadexpected.
Someconsumerresearchersdistinguish【C1】______"rational"motivesand"emotional"(or"non-rational"motives.Theyusetheterm
Someconsumerresearchersdistinguish【C1】______"rational"motivesand"emotional"(or"non-rational"motives.Theyusetheterm
下面你将听到一段关于中国教育状况的介绍。中国人历来重视教育,实施“独生子女”政策后尤为如此。中国家庭的平均教育支出约占其收入的15%,而据中国社会调查所的一项研究成果显示,有43%的家庭都设立了专门账户,用来支付孩子的教育费用。近年来,
Mostpeoplecanrememberaphonenumberforuptothirtyseconds.Whenthisshortamountoftimeelapses,however,thenumbersa
A、Redsaltybeef.B、Spicyseafood.C、Fishandchips.D、Sausagesandeggs.C
随机试题
已知等截面积叶片高Lb=200mm,横截面面积Ab=2.15cm2,叶片平均直径Dav=1200mm,材料密度ρ=7850kg/m3,转速n=3000r/min,试求叶片根部的伸拉应力为多少?
患者,男,24岁。左上后牙咀嚼痛1个多月,近1周加剧。近日牙齿出现松动,完全不能触动。疼痛剧烈,不能入睡,发热、头痛。检查发现左上后牙牙龈红肿,触痛明显,左上第一磨牙远中牙合面龋,无探痛,叩痛(+++)该患牙与急性牙周脓肿鉴别时,鉴别要点如下,除外
工程建设项目设计质量控制的方法有()。
法律、行政法规、地方性法规、自治条例、单行条例、规章一般不溯及既往,但为了()而作的特别规定时,可以溯及既往。
常用的粉尘净化方法是()。
大陆架
=________
若整型变量a、b、c、d中的值依次为:1、4、3、2。则条件表达式a<b?a:c<d?c:d的值是()。
数据类型是()。
【B1】【B7】
最新回复
(
0
)