首页
登录
职称英语
[originaltext] Good morning. Today I’d like to talk about electronic cigaret
[originaltext] Good morning. Today I’d like to talk about electronic cigaret
游客
2023-08-09
60
管理
问题
Good morning. Today I’d like to talk about electronic cigarettes.[22]Electronic cigarettes are battery-operated devices designed to deliver nicotine with flavorings and other chemicals to users in vapor instead of smoke. They can be manufactured to resemble traditional tobacco cigarettes, cigars or pipes, or even everyday items like pens or USB memory sticks: newer devices, such as those with fillable tanks, may look different. More than 250 different e-cigarette brands are currently on the market. While e-cigarettes are often promoted as safer alternatives to traditional cigarettes, which deliver nicotine by burning tobacco, little is actually known yet about the health risks of using these devices.
Cigarette smoking remains the leading preventable cause of sickness and mortality, responsible for over 400,000 deaths in the United States each year. E-cigarettes are designed to simulate the act of tobacco smoking by producing something that looks and feels like tobacco smoke and delivers nicotine but with less of the toxic chemicals produced by burning tobacco leaves.[24]Because they deliver nicotine without burning tobacco, e-cigarettes appear as if they may be a safer, less toxic alternative to conventional cigarettes. Although they do not produce tobacco smoke, e-cigarettes still contain nicotine and other potentially harmful chemicals. Nicotine is a highly addictive drug, and recent research suggests nicotine exposure may also prime the brain to become addicted to other substances. Also, testing of some e-cigarette products found the vapor to contain toxic chemicals. The health consequences of repeated exposure to these chemicals are not yet clear.
Some people believe e-cigarette products may help smokers lower nicotine addiction while they are trying to discontinue their tobacco use. However, at this point it is unclear whether e-cigarettes may be effective as smoking-cessation aids. There is also the possibility that they could perpetuate the nicotine addiction and thus interfere with quitting.
Because e-cigarettes are not currently marketed either as tobacco products or as devices having a therapeutic purpose, they are not regulated by the FDA In addition, there is currently no regulation of the liquids that are used in e-cigarettes. So, there are no accepted measures to confirm their purity or safety.
22. What do we learn about e-cigarettes?
23. How many deaths are caused by cigarette smoking in the US every year?
24. Why do e-cigarettes appear to be safer than conventional cigarettes?
25. Why are e-cigarettes not regulated by the FDA?
选项
A、They are powered by battery.
B、They don’t deliver nicotine.
C、They don’t look like cigarettes.
D、They will soon be on the market.
答案
A
解析
录音提到电子香烟是用电池做电源的,故选A项。录音提到电子香烟以水蒸气而非烟雾的形式给人们传递了尼古丁及其他化学物质,故B项“电子香烟不会传递尼古丁”不正确。在外形上电子香烟可以做成传统的香烟、雪茄或者烟管的形状,也可以做成日常生活用品的造型,因此C项“电子香烟看起来不像传统香烟”过于绝对。目前市场上已有250多种不同品牌的电子香烟,故D项“电子香烟即将上市”不正确。
转载请注明原文地址:https://tihaiku.com/zcyy/2912135.html
相关试题推荐
[originaltext]Yourprofessorhasaskedmetotalktoyoutodayaboutthetop
[originaltext]Yourprofessorhasaskedmetotalktoyoutodayaboutthetop
[originaltext]Yourprofessorhasaskedmetotalktoyoutodayaboutthetop
[originaltext]Ok,soinourlastclasswewerediscussingbigbandsswingmu
[originaltext]Ok,soinourlastclasswewerediscussingbigbandsswingmu
[originaltext]We’vebeenlookingatfearfrombiologicalperspective.Andso
[originaltext]Thankyouallforcomingtomytalkthisevening.It’sniceto
[originaltext]Thankyouallforcomingtomytalkthisevening.It’sniceto
[originaltext]Xwasasecretagent.Hehadrentedafurnishedroominaprov
[originaltext]W:Whatanice,quietspotawayfromallthosepeople.Nowtellm
随机试题
WhatdidPeterfindwhenhewokeuponemorning?Hefoundthatthefloorofhis
编辑加工题:阅读分析短稿,并按照稿件加工整理的规范进行编辑加工。(本题20分)
为保证我国新闻事业永远属于人民所必须坚持的原则是()A.社会效益和经济效益的统
在临床诊疗活动中,医务人员收受药品、医用设备、医用耗材等生产、经营企业或经销人员
企业为维持一定经营能力所必须负担的最低成本是()。A、变动成本 B、混合成本
女性,40岁。左乳房外上象限可触及一直径3cm包块,距乳头距离5cm,同侧腋窝
()以金融资产为交易对象,对经济活动的各个方面都有着深刻影响。A.法律环境 B
A.静脉滴注 B.椎管注射 C.肌内注射 D.皮下注射 E.皮内注射1~
下列环境噪声监测点布设符合《声环境质量标准》的是( )。A.一般户外测点距任何
主要材料可反复使用,止水性好的基坑围护结构是()。A.钢管桩 B.灌注桩 C
最新回复
(
0
)