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
2023-09-03
63
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、It’s useless.
B、It’s unnecessary.
C、It’s doubtful.
D、It’s helpful.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2983184.html
相关试题推荐
Theywere______intheirscientificresearch,notknowingwhathappenedjustou
Therearescientificproofsthatthealcohol-addictsare______toheartattack.
Shestudiesmanybooksaboutfashion,entertainingandcorrectsocialbehaviora
Theywere______intheirscientificresearch,notknowingwhathappenedjustou
The______ofthescientificattitudeisthatthehumanmindcansucceedinunder
DaVinciwassobusywithhisnumerousinventionsthathe_______foundenought
Shestudiesmanybooksaboutfashion,entertainingandcorrectsocialbehaviora
[originaltext]W:Areyoureallygoingtoquityourjob?M:Well...I’mnotsure.
[originaltext]W:Youcaneithergowithmeoryoucanstayhereattheapartmen
[originaltext]W:Youcaneithergowithmeoryoucanstayhereattheapartmen
随机试题
Althoughwehaveateam,andeachoneintheteamisa______,westilllostth
【S1】[br]【S8】A
Therearetwotypesofriskrelatedtoinvestment.Theobviousriskisthat
Peopletravelforalotofreasons.Sometouristsgotoseebattlefieldsor
初中地理《美国领土组成》 一、考题回顾 题目来源1月6日上午湖北省黄冈市
( )技术不能保障应用系统的完整性。A.奇偶校验法 B.数字签名 C.物理
肾病综合征患儿激素疗效判断,使用泼尼松的剂量(每日最大剂量≤60mg)及疗程标准
美术教材编写的要求不包括()A.以教材为本 B.强调实践能力的培养 C.
材料一 “我们都在努力奔跑,我们都是追梦人。”是的,我们都是追梦
患儿,男,4岁,因感冒出现鼻塞,可选用的治疗方案是A.口服氯苯那敏片 B.口服
最新回复
(
0
)