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
A、They will not cause death. B、They have no toxic chemicals. C、They do not use tobacco. D、They are not so addictive. C录音提到电子香烟不需
A、They will not cause death. B、They have no toxic chemicals. C、They do not use tobacco. D、They are not so addictive. C录音提到电子香烟不需
admin
2016-11-26
21
问题
Good morning. Today I’d like to talk about electronic cigarettes. 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 tillable 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. 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 will not cause death.
B、They have no toxic chemicals.
C、They do not use tobacco.
D、They are not so addictive.
答案
C
解析
录音提到电子香烟不需要通过燃烧烟草来传递尼古丁,因此显得比传统香烟更安全,毒性更小,本题选C项。A项“电子香烟不会致人死亡”未在录音提及。录音提到电子香烟虽然不产生烟雾,但却仍然含有尼古丁及其他一些有害物质,因此B项“电子香烟不含有毒物质”不正确。尼古丁很容易使人上瘾,而且人们接触到尼古丁之后,大脑还容易对其他一些物质产生依赖,因此D项“电子香烟没那么容易使人上瘾”不正确。
转载请注明原文地址:https://kaotiyun.com/show/NmF7777K
0
大学英语六级
相关试题推荐
A、Chemicals.B、Bottles.C、Athleticshoes.D、Modelboats.B“oceanographers”是指“海洋学者”。这篇杂志上的文章说,海洋学者们许多年以来,向海洋里扔了大量的瓶子,希望弄清海流的去向。正确
A、Bothered.B、Amazed.C、Puzzled.D、Excited.B四个选项均为单个形容词,有正面的,也有负面的,选项所给信息过少,无法判断本题考查内容,但听录音时,对与这些形容词有关联的内容都要注意捕捉。对话中女士问男士走到哪儿都会
A、Thestripsofaspecialplant.B、Woodorthebarkoftrees.C、Worn-outclothandstraw.D、Somecommonchemicals.A事实细节题。本题问的是造
A、Subjective.B、Objective.C、Ambiguous.D、Changeable.B观点态度题。本题问的是Lehrer先生对于电子阅读器持什么样的观点。短文最后,Lehrer先生表示,电子阅读器彻底革新了我们的阅读习惯,它带来方便
A、Studyinghistory.B、Buyinglotterytickets.C、Registeringforcourses.D、Goingtoanartgallery.C女士说电子工程学和艺术史报选的最后限期快到了,而男士正
A、Thetwelfth.B、ThethirteenthC、Thefourteenth.D、Thefifteenth.B根据原文,最积极参与体育运动的是18至26岁的人。故答案是B。从选项可以初步猜测题目与数字范围有关。听完录音,可得知对话
A、Refrainfromshowinghisfeelings.B、Expresshisopinionfrankly.C、Arguefiercely.D、Yellloudly.A录音提到,明显表示烦恼或生气、叫喊、大声争辩等,在日
随机试题
导游员在接送旅游者时的沿途讲解宜采用()形式。
哪些肾实质疾病或因素可导致急性肾衰竭?
下列各项中,含有当归、生地黄的方剂有
患者,女性,15岁,学生。受凉后出现鼻塞、流涕、头晕、头痛伴发热。体温38℃。其他同学无相似症状。血常规检查示:WBC3.0×109/L,N70%,L30%。可能的诊断是
为防止矿井火灾势态扩大而需要封闭火区时,对火区封闭的要求,不正确的是()
甲公司按照年度实现净利润的10%提取法定盈余公积,2×17年1月1日,甲公司股东权益总额为20000万元,其中普通股股本10000万元(10000万股),资本公积5000万元,盈余公积3000万元,未分配利润2000万元。2×17年5月6日甲公司实施完毕股
根据企业所得税法律制度的规定,下列选项中,属于长期待摊费用的有()。
我们中华民族有悠久的历史和优秀的文化传统,有丰富的文化遗产。中国文化是世界上最古老的文化之一。___________,我们的文化不同于其他古代文化的一个特点是,几千年来它一直没有中断,我们丰硕的文化遗产___________可以丰富我国人民________
一个民族的法律意识属于以下哪一类法律意识()
Thediscountdo-it-yourselfstore,Aldi,hasseensomebig【T1】______recently.Whileotherbusinessesarecuttingback,Aldiis【T
最新回复
(
0
)