首页
登录
职称英语
Electronic cigarettes are handheld nicotine-delivery devices that, despite a
Electronic cigarettes are handheld nicotine-delivery devices that, despite a
游客
2024-04-04
42
管理
问题
Electronic cigarettes are handheld nicotine-delivery devices that, despite a devoted following, are currently swirling in controversy. New York is pushing to become the first state to ban the devices, which so far remain【C1】______ and mostly unstudied. With cute colors, fruity flavors, clever designs and other options, e-cigarettes may hold too much【C2】______ for young people, critics warn, offering an easy gateway to nicotine addiction. But those criticisms clash with【C3】______ strong arguments for the value of e-cigarettes. The devices, which are tobacco-free, may be a safer【C4】______ to cigarettes, say advocates, who point to thousands of smokers who say they have used e-cigarettes to help them quit.
Electronic cigarettes【C5】______ use a rechargeable battery-operated heating element to vaporize the nicotine in a replaceable pipe. Nicotine is the substance in tobacco that people can become addicted to. Some e-cigarettes are made to look like real cigarettes, cigars or pipes. Others look like pens or USB memory devices. No tobacco is【C6】______ in e-cigarettes and there is no smoke either. Instead, as users breathe in, they take in nicotine-filled vapor.
By isolating nicotine, e-cigarettes should carry far fewer chemical risks than【C7】______ cigarettes. Tobacco contains about 5,000【C8】______ chemicals with as many as 100,000 more that haven’t yet been known. E-cigarettes【C9】______ many of those ingredients. Researchers also found evidence that e-cigarettes reduce desires among smokers, not just for nicotine but also for the need to hold something in their hands and put something in their mouths. As a cigarette-quitting strategy, it’s not that the devices are good for anyone, but they are just better than what they’re meant to【C10】______
A) alternative B) engaged C) regular D) opaque
E) involved F) typically G) solely H) appeal
I) momentum J) equally K) replace L) unregulated
M) eliminate N) detect O) identified [br] 【C8】
选项
答案
O
解析
空格在名词前面,可能是名词、形容词或分词作定语。空格后提到“仍有10万种以上‘未知的’化学成分”,由此推断空格所在部分讲烟草中已有5000种“已知的”化学成分。identified作定语表示“已鉴定的、已认出的”,符合句意。
转载请注明原文地址:https://tihaiku.com/zcyy/3541112.html
相关试题推荐
[originaltext]Goodmorning.TodayI’dliketotalkaboutelectroniccigaret
[originaltext]Goodmorning.TodayI’dliketotalkaboutelectroniccigaret
[originaltext]Goodmorning.TodayI’dliketotalkaboutelectroniccigaret
[originaltext]Manypeoplewhodrinkalcoholalsoliketosmokecigarettes.
[originaltext]Thepopularityofmobiledeviceshashadsomeunintendedand
[originaltext]Thepopularityofmobiledeviceshashadsomeunintendedand
HowtheCIAWorks[A]DespiteplentyofHollywoodfilmsabouttheCIAan
HowtheCIAWorks[A]DespiteplentyofHollywoodfilmsabouttheCIAan
HowtheCIAWorks[A]DespiteplentyofHollywoodfilmsabouttheCIAan
HowtheCIAWorks[A]DespiteplentyofHollywoodfilmsabouttheCIAan
随机试题
[img]2018m9s/ct_etoefz_etoeflistz_201808_0018[/img][br]Whatisthelecturemai
病人不允许有自主呼吸A.控制通气B.辅助/控制通气C.间歇指令通气D.呼吸末正压
维生素D缺乏引起的疾病最主要的是()A.不育症 B.暗适应能力下降 C.脚
学生享有的最重要的权利是______。A.参加教育教学活动 B.获得学金权
具有腐蚀作用的药物是A.八宝丹 B.升丹 C.红灵丹 D.小金丹
急性上呼吸道感染的辅助检查下列说法正确的是A.病毒感染者白细胞增高 B.细菌感
下列哪类疾病目前不能采用介入治疗? A.冠心病心绞痛B.二尖瓣狭窄C.阵发性
综观世界各国成文宪法,结构上一般包括序言、正文和附则三大部分。对此,下列哪一表述
在工程项目可行性研究阶段中,最终形成可行性研究报告的阶段是( )。A.投资机会
(2019年)根据《地下水质量标准》(GB/T14848-2017),已知某污染
最新回复
(
0
)