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  3. The first time Tom Kiklas saw an electronic cigarette, he recalls, "I couldn’t stand it.. . I thought, ’I don’t want to be invol

The first time Tom Kiklas saw an electronic cigarette, he recalls, "I couldn’t stand it.. . I thought, ’I don’t want to be invol

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问题     The first time Tom Kiklas saw an electronic cigarette, he recalls, "I couldn’t stand it.. . I thought, ’I don’t want to be involved in this. ’ I’m an anti-smoking kind of guy. "
    But after Kiklas realized that electronic cigarettes, a. k. a. e-cigarettes, deliver nicotine without tobacco or combustion products, thereby eliminating virtually all of the health hazards associated with smoking, he was comfortable becoming media relations director for inLife, one of the companies that sell the devices in the United States. Unfortunately, many anti-smoking activists and public health officials are stuck in that first stage of visceral antipathy toward anything that resembles cigarettes, an emotional reaction that could prove deadly for smokers.
    Introduced by the Chinese company Ruyan in 2004, e-cigarettes produce water vapor containing nicotine and the food additive propylene glycol. The tip of the battery-powered "cigarette" lights up when a user sucks on it, and the vapor looks like smoke, but it dissipates immediately and contains none of the toxins and carcinogens that are generated when tobacco burns.
    Given the enormous differences between this vapor and tobacco smoke, the companies that sell e-cigarettes online and from shopping mall kiosks are on firm ground in advertising them as safer alternatives to conventional cigarettes that can be used in places where smoking is banned. The arguments of e-cigarette opponents, by contrast, reek of red herrings.
    The critics warn that nicotine is addictive, that it may contribute to cardiovascular problems, and that smokers may use e-cigarettes as way of coping with smoking bans, continuing their habits instead of quitting. All of these objections also apply to the nicotine gum, patches, sprays, and inhalers the FDA has approved as safe and effective smoking cessation tools.
    E-cigarettes are less expensive than those products and may be more appealing to smokers looking for an experience that’s closer to the real thing. Although they have not been subject to the sort of rigorous testing the FDA demands for new drugs, the drug they contain is not new. It’s the same one delivered, in a much dirtier manner, by the cigarettes that the government says kill 400,000 Americans every year.
    "The standard for lower-risk products for use by current smokers," argues the American Association of Public Health Physicians, "should be the hazard posed by cigarettes, not a pharmaceutical safety standard. " Telling smokers they may not use e-cigarettes until they’re approved by the FDA is like telling a floundering swimmer not to climb aboard a raft because it might have a leak.
E-cigarettes are advertised as a safe substitute of ordinary cigarettes because they______.
选项 A、contain harmless food additive propylene glycol
B、produce water vapor without harmful substances
C、reduce toxins and carcinogens that are generated
D、create tobacco smoke without addictive chemical
答案B
解析 根据第三段中的“…the vapor looks like smoke，but it dissipates immediately and containsnone of the toxins and carcinogens…”，B应为答案。
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