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  3. Millions of teenagers are in danger of putting their health at risk by getting hooked on e-cigarettes, experts warn. Leading hea

Millions of teenagers are in danger of putting their health at risk by getting hooked on e-cigarettes, experts warn. Leading hea

admin2015-07-13  33
问题     Millions of teenagers are in danger of putting their health at risk by getting hooked on e-cigarettes, experts warn. Leading health researchers say they are "very concerned" by the growing number of youngsters trying the devices as a major new study reveals one in five teenagers has accessed them.
    E-cigarettes have been marketed as a healthier alternative to smoking conventional cigarettes. But previous research shows e-cigarettes generate poisonous chemicals similar to those found in tobacco and may harm the lungs and immune system.
    Worryingly, researchers at Liverpool John Moores University discovered 16% of teenagers who have used e-cigarettes had never previously smoked. The experts also found e-cigarettes were " strongly related" to drinking among teenagers. Study author Prof. Mark Bellis warned that such " rapid penetration into teenage culture of what is essentially a new drug-use option is without precedent(先例). " He added: " Our research suggests that we should be very concerned about teenagers accessing e-cigarettes. While debate on e-cigarettes has focused largely on whether or not they act as a gateway to tobacco cigarette use, e-cigarettes themselves contain a highly addictive(上瘾的)drug that may have more serious and longer lasting impacts on children because their brains are still developing. "
    Researchers surveyed 16,000 students aged 14 to 17 in the North West of England and asked them about their alcohol and tobacco use. They found that one in five answered yes to the question: " Have you ever bought or tried electronic cigarettes?" More males than females said they had, and the figure increased with age and if they lived in a deprived poor area.
    Of the teenagers that had accessed e-cigarettes, 16% had never smoked, 23% had tried smoking but did not like it, 36% were regular smokers, 12% only smoked when drinking, and 14% were ex-smokers. The research, published in journal BMC Public Health, also found teenagers who drank alcohol were significantly more likely to have accessed e-cigarettes than non-drinkers.
    Among those who had never smoked, it was found that those who regularly have excessive drinking were four times more likely to access e-cigarettes than those who never drink. In all of those that drink, regardless of smoking status, e-cigarette access was associated with excessive drinking and involvement with violence after drinking. The researchers said their findings suggest that teenagers who use e-cigarettes are most susceptible(易受影响的)to other forms of substance use and risk-taking behaviour.
What’s the main idea of this passage?
选项 A、Experts are concerned about excessive drinking in teenagers.
B、The harm of e-cigarettes is greater than that of alcohol.
C、Teenagers are in danger of risking their health on e-cigarettes.
D、Researchers are aware of smoke-related health hazards.
答案C
解析 主旨大意题。本题考查的是全文的主旨大意。原文第一段指出，专家警告说，数以百万计的青少年沉迷于电子烟，这使他们的健康受到威胁。第二、三段表明了电子烟对青少年的危害。最后三段指出研究人员对英格兰西北部16，000名14至17岁之间的学生进行的关于其酒精和烟草的使用情况的调查，并揭示了调查结果。由此可知，本文主要阐述了青少年沉迷于电子烟，危及他们的健康。C)是对全文的最佳概括，故为答案。A)“专家关心青少年的过度饮酒问题”和D)“研究人员注意到了与吸烟相关的健康危害”都是文章提及的部分内容，属于以偏概全，故排除；B)“电子烟的危害大于酒精”，原文未提及，属于无中生有，故排除。
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