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
2023-04-07
70
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 260 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/DYvD777K
0
大学英语六级
相关试题推荐
Theauthorarguedthatthefieldofsociologyhasbeenovertly(i)________,partlybecause,formanyscholars,theedgesofthe
Thejournalistwassomeonewhosehabitualdistrustofauthoritystruckafewpeopleas(i)________butwhohadenoughtalentand
Whenaskedtochoosebetweenmarriageandcareer,femalecollegestudentsareaslikelytochoosemarriagetwiceastheirmalec
Informationwillbethegreatestopportunityforbusinessleadersinthecomingyears—andperhapsourbiggestheadache.Sinceth
Chinaisthetopsourcecountryofinternationalstudentsintheworld.Recentstatisticshaveshowna【C1】________trendforChin
C细节辨认题。当男士问女士NEA基金会是一个什么样的机构,为教师提供哪些支持时,女士提到该基金会致力于为学生改善公共教育、每年向教育工作者发放三次补助金、每年颁发优秀教学奖等,由此判定选项A、B、D均与原文不符。C项与原文中的“Educatorscan
D细节辨认题。当谈论到个人可以为改善光污染做些什么时,女士提到在家庭照明中需要注意光的朝向,应该让光线的照射角度向下。因此本题答案为D。
A、80or90minutes.B、16or17hours.C、8or9hours.D、18or19hours.D题目问Susan每天花在手机上的时长。录音中Susan回答是18或19个小时,之后Charles表示惊讶并向S
A、Itmightbothersomepeople.B、Itisveryusefulandromantic.C、Itdoesn’ttakemuchworktowrite.D、Ithastobecertified
A、Ithascometoanendbecausesheisadvancedinyears.B、Itisconductivetotheprotectionofchimpanzees.C、Ithelpsyoung
随机试题
Asmanypeoplehitmiddleage,theyoftenstarttonoticethattheirmemoryandmentalclarityarenotwhattheyusedtobe.We
Thewatercompanyisobligedtomaintainasupplyofwholesomewater.
APTT缩短见于
下列不属于高危妊娠范畴的是
犯罪中止可以发生在以下哪些情形?
根据《个人贷款管理暂行办法》规定,贷款风险评价应以分析借款人()为基础,采取()办法,全面、动态地进行贷款审查和风险评估。
某公司普通股每股发行价为5元,筹资费用率为5%,预计下期每股股利0.95元,以后每年的股利增长率为6%,则该公司的普通股资本成本为()。
(2015年)采用分批法时,成本计算期与产品生产周期基本一致,但与财务报告期不一致。()
操作系统是为了提高计算机的工作效率和方便用户使用计算机而配备的一种()。
[2007年]设线性方程组①与方程(Ⅱ):x1+2x2+x3=a一1,②有公共解.求a的值与所有公共解.
最新回复
(
0
)