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
52
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://www.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
Yourblunttreatmentofdisputeswouldputotherpeopleinanegativeframeof_
[originaltext]W:Ineedtobuytrainticketsformyparents,butthetrainstat
HowtoMakePeacewithYourWorkloadA)Swamped(忙碌的),underthegun,justs
黑格尔认为,自然界是“自我异化”的()。A.绝对同一 B.绝对精神 C.自我
用钢锯锯割物件时()A.锯割运动时,握锯的右手施力,左手的压力不要过大 B.锯
合同法律关系的内容是()。A.权利和义务 B.权利和责任 C.法律事实
以下哪项不属于早期矫治的有利因素A.错畸形复发的可能性小 B.利用生长发育的潜
柳先生向A银行申请个人商用房贷款100万元,购买B房地产经销的一手商品房,经A银
( )是商业银行有效风险管理的基石。A.高级管理层的支持与承诺 B.董事会的
根据《住宅专项维修资金管理办法》,下列哪些费用不得从住宅专项维修资金中列支(
最新回复
(
0
)