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  3. Electronic cigarettes are handheld nicotine-delivery devices that, despite a

Electronic cigarettes are handheld nicotine-delivery devices that, despite a

游客2024-03-30  13
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] 【C5】
选项
答案 F
解析 句子主谓宾语齐全，空格处应填入副词。本段从工作原理、外观等方面介绍电子香烟。副词库中typically符合语义，表明电子香烟“通常”使用一个可充电电池驱动的加热器对可替换烟管里的尼古丁进行加热雾化。
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