首页
登录
职称英语
[originaltext] Since 1939, numerous scientific studies have been conducted t
[originaltext] Since 1939, numerous scientific studies have been conducted t
游客
2024-05-15
51
管理
问题
Since 1939, numerous scientific studies have been conducted to determine whether smoking is a health hazard. The trend of the evidence has been consistent and indicates that there is a serious health risk Research teams have conducted studies that show beyond all reasonable doubt that cigarette smoking is associated with a shortened life expectancy.
Cigarette smoking is believed by most research workers in this field to be an important factor in the development of cancer of the lungs and cancer of throat. Male cigarette smokers have a higher death rate from heart disease than nonsmoking makes. Female smokers are thought to be less affected because they do not breathe in the smoke so deeply.
It might be helpful to look at what smoking actually does to the human body. Smoke is a mixture of gases, vaporized chemicals, minute particles of ash, and other things. There is also nicotine, which is a powerful poison and black tar. As the smoke is breathed in, all these components form deposits on the membranes of the lungs. One point of concentration of deposits is where the air tube divides. Most lung cancer begins at this point.
Smoking also affects the heart and Blood vessels. It is known to be related to Beurger’ s disease, a narrowing of the small veins in the hands and feet that can cause great pain. Smokers also die much more often from heart disease.
选项
A、Smoking can lengthen life expectancy.
B、Smoking can shorten life expectancy.
C、We haven’t found out yet.
D、There is no connection between smoking and life expectancy.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3599449.html
相关试题推荐
[originaltext]Thiswasnoordinaryclass.Thestudentswhocametogetherwe
[originaltext]Thiswasnoordinaryclass.Thestudentswhocametogetherwe
[originaltext]M:Dr.White,we’verecentlylearnedthatapieceoftheLarsenI
[originaltext]M:Dr.White,we’verecentlylearnedthatapieceoftheLarsenI
[originaltext]M:Doyoufeellikeyouneedmorehoursfromtheday?Well,Good
[originaltext]M:Doyoufeellikeyouneedmorehoursfromtheday?Well,Good
[originaltext]M:Doyouhaveaseatfortheconcerttomorrow?W:Noseatsata
[originaltext]M:Doyouhaveaseatfortheconcerttomorrow?W:Noseatsata
[originaltext]M:Doyouhaveaseatfortheconcerttomorrow?W:Noseatsata
[originaltext]M:Doyouhaveaseatfortheconcerttomorrow?W:Noseatsata
随机试题
[originaltext]Anearthquakemeasuring6.7ontheRichterscalehashitnort
Britainhasalwaysbeenfortunateinhavingplentifulenergyresources.A
Apple’slaunchoftheiPadisagambleinmorewaysthanone.Tostartwith,
张处于实值状态的看跌期权的内在价值等于()A.股价减去执行价格 B.看跌期权
资料(一) 俊宏益德集团(以下简称俊宏集团)属于建筑防水材料行业,是一家集研
某工程进行AC-16沥青混合料目标配合比设计,为配合此项工作,试验人员需要取集料
莪术与三棱作用相似,但莪术偏于A.破血 B.破气 C.消积 D.止血
动脉阻塞且静脉回流受阻的下肢易发生 A.凝固性坏死B.液化性坏死C.湿性坏
甲国公民玛丽与中国公民王某经常居住地均在中国,2人在乙国结婚。关于双方婚姻关系的
一住店客人未付房钱即想离开旅馆去车站。旅馆服务员揪住他不让走,并打报警电话。客人
最新回复
(
0
)