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  3. Even in the absence of definitive science on the potential hazards surroundi

Even in the absence of definitive science on the potential hazards surroundi

游客2025-03-26  4
问题     Even in the absence of definitive science on the potential hazards surrounding the use of electronic cigarettes, regulations are needed now to head off health concerns. One such restriction should be a ban on indoor use of the devices. That’s according to a new report published by the World Health Organization (WTO) on August 26. Electronic cigarettes "represent an evolving frontier, filled with promise and threat for tobacco control." The popular devices deliver an aerosolized (雾化的) solution to users by heating a nicotine solution that users breathe in.
    In the past nine years the e-cigarette industry has exploded to include more than 400 brands in a roughly $3-billion industry. Yet flavorings that attract children, poor quality control between brands and apparent rapid experimentation among adolescent users have triggered growing fears that e-cigs are a new gateway drug. The U.S. CDC reported earlier this week that more than a quarter million youth who had never smoked traditional tobacco cigarettes used e-cigs last year— representing a roughly three-fold increase from 2011 to 2013.
    The WHO report recommends that countries regulate the e-cigarette industry by such means as blocking e-cig manufacturers from making health claims about the devices that suggest they are effective aids for quitting smoking, banning e-cig use in public places and restricting advertising for the products. Other recommendations in the report include subjecting the devices to the same inspection and monitoring typical for tobacco products, restricting sales to minors and possibly requiring health warnings on the packaging.
    Most of these gadgets "have not been tested by independent scientists, but the limited testing has revealed wide variations in the nature of the toxicity of contents and emissions." Factors including how long and deep users puff on e-cigarettes, the lack of uniformity in the e-cig flavoring solutions and the possibility that users could potentially overdose on the nicotine found in the liquid—or that the drug may contribute to other health risks—must all be considered, the agency says. The WHO recommends that smokers attempting to quit should first turn to tried-and-true methods such as the patch and nicotine gum before turning to e-cigarettes.
    The U.S. Food and Drug Administration in April proposed regulations for e-cigarettes that have not yet been finalized. Those regulations, if implemented, would block youths from buying e-cigarettes and require health warnings on the products. They would not, however, ban advertising or online sales, which critics contend allow minors easy access to the devices. [br] The underlined sentence in the first paragraph means that e-cigarettes________.
选项 A、involves high-technology
B、have reached a dead end
C、have an uncertain future
D、will replace tobacco smoking
答案 C
解析 该句的大意是：电子香烟代表着一个逐渐发展的前沿领域，既有可能有利于控制吸烟，也可能对控制吸烟构成威胁。言外之意就是“前途未卜”。
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