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  3. Cigarette smoking is a health hazard of sufficient importance in the United States．It was 50 years ago this month that America’s

Cigarette smoking is a health hazard of sufficient importance in the United States．It was 50 years ago this month that America’s

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问题     Cigarette smoking is a health hazard of sufficient importance in the United States．It was 50 years ago this month that America’s Surgeon General sounded that warning，marking the beginning of the end of cigarette manufacturing——and of smoking itself——as a respectable activity．
    Some 20 million Americans have died from the habit since then．But advertising restrictions and smoking bans have had their effect：the proportion of American adults who smoke has dropped from 43％ to 18％；smoking rates among teenagers are at a record low．In many other countries the trends are similar．
    The current Surgeon General，Boris Lushniak，marked the half-century with a report on January 17th，declaring smoking even deadlier than previously thought．He added diabetes，colorectal cancer and other ailments to the list of ills it causes，and promised end-game strategies to extinguish cigarettes altogether．
    New technologies such as e-cigarettes promise to deliver nicotine less riskily．E-cigarettesgive users a hit of vapour infused with nicotine．In America，sales of the manufacturer，who is the fastest e-cigarettes-adopter，have jumped from nearly nothing five years ago to at least 1 billion in 2013．
    At first，it looked as if e-cigarettes might lure smokers from the big tobacco brands to startups such as NJOY．But tobacco companies have bigger war chests，more knowledge of smokers’ habits and better ties to distributors than the newcomers．Some experts reckon Americans will puff more e-cigarettes than normal ones within a decade，but tobacco folk are skeptical．E-cigarettes account for just 1％ of America’s cigarette market．In Europe 7％ of smokers had tried e-cigarettes by 2012 but only 1％kept them up．
    And no one knows what sort of restrictions regulators will eventually place on reduced risk products，including e-cigarettes．If these companies can manage the transition to less harmful smokes，and convince regulators to be sensible，the tobacco giants could keep up the sort of performance that has made their shares such a fine investment over the years．But some analysts are not so sure．
    Many tobacco firms are struggling to deliver the consistency of the earnings-per-share model we’ve seen in the past．If that persists．investors may fall out of love with the industry．A half-century after the Surgeon General’s alarm，they，and hopeless smokers，are its last remaining friends．
According to the passage，e-cigarettes__________．
选项 A、supply smokers with nicotine more safely
B、help the fastest e-cigarettes-adopter gain sales 1 billion times
C、are mastered by all tobacco firms as a new technology
D、have lured smokers from the big tobacco brands to startups
答案A
解析 细节题。根据题干关键词定位到第四、五段。第四段首句指出“一些新的技术，比如电子香烟可以降低尼古丁的危害”，A项中的supply和more safely是首句中的deliver和less riskily的同义替换，故A项为正确答案。B项“帮助最先采用这种方式的厂家获得销售量10亿倍的增长”与文意“销售量……已经达到至少10亿美元”不符，故排除。C项“作为一种技术被所有的烟草公司采纳”错在all一词。D项“已经诱导烟民们从大的烟草品牌转向新兴公司”忽视了原文中it looked as if和might的可能性修饰，是对原文意思的误解，也排除。故本题选A。
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