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1 It's been 40 years since the surgeon general issued the first report warning that cigarettes cause cancer. Since then, the public has grown acutely aware that smoking is lethal. But though the public education campaign has been a great success in providing information, it's been a failure in one conspicuous way: 46 million American adults still smoke. 2 How come? Because it's so hard to quit. Nicotine is so powerfully addictive that lots of people find it impossible to give up even with lung cancer, emphysema and heart disease staring them in the face. Despite an array of products and strategies designed to help people conquer the habit, cigarettes remain a major killer in this country. 3 If we want to know how to reduce the death toll from tobacco use, we might want to look at Sweden, where smoking among men has dropped sharply in recent years. How come? Brad Rodu, a professor of pathology at the University of Alabama at Birmingham, says one big reason is that a lot of Swedish smokers have switched to smokeless tobacco. 4 That may sound like a pointless exercise, substituting one deadly addiction for another. In fact, snuff and other unsmoked forms of tobacco are not nearly as risky as the kind you ignite and inhale. 5 A 2002 report by Britain's Royal College of Physicians noted that 'the consumption of non-combustible tobacco is of the order of 10 to 1,000 times less hazardous than smoking.' Smokeless tobacco is known to cause oral cancer. But Rodu estimates that if everyone now smoking made the change, the annual number of tobacco-related deaths in the United States would plunge from 440,000 to 6,000. 6 U.S. Surgeon General Richard Carmona, who says he would like to ban all tobacco products, insists that 'there is no scientific evidence that smokeless tobacco products are b6th safe and effective aids to quitting smoking.' Anti smoking groups portray smokeless tobacco as an intolerable danger. But a growing pile of evidence suggests snuff could be a valuable tool to help smokers help themselves. 7 It's true that they'd do well to swear off the weed in any form. But when virtue fails, as it often does, we have to look for ways to make vice less dangerous. That's the rationale for giving teens access to condoms and other types of birth control, even if we strongly prefer that they abstain from sex. It's also the idea behind needle-exchange programs, which recognize that one thing worse than injecting heroin is injecting it with an AIDS-infected syringe. 8 Smokeless tobacco offers hope to hard-core smokers because it lets them fill their nicotine needs without sucking toxic fumes into their lungs. Addicts would be better off getting their daily dose without lighting up. 9 The rest of us would gain as well, since this indulgence lacks a notable byproduct of cigarettes: secondhand smoke. (With some forms, the user doesn't even have to spit.) And nobody ever burned down his house by falling asleep while dipping snuff. 10 You may wonder why any smoker wouldn't use nicotine gum or patches instead. Answer: because they're more expensive and less potent, relieving smokers of their cash but not their cravings. While nicotine maintenance works for some people, it doesn't work for others, and they shouldn't be deprived of additional options. 11 Critics dismiss Rodu as a hired gun for the smokeless tobacco industry, which in recent years has donated money to support his research and would like to market its product as a safer alternative to smoking. But he says his studies between 1993 and 1999 were done without any industry financing. The funds the industry has given since then have been unrestricted grants to the University of Alabama at Birmingham, and it has no control over the research. 12 Attacking his funding seems to be easier than refuting his evidence. If the tobacco industry donates money to scientists who say the sky is blue, that doesn't make it green. Instead of
A.
Quite a big percentage of Americans are cigarette smokers.
B.
Americans are well informed of the danger from smoking.
C.
Smokers of cigarettes may die of cancer.
D.
The campaign against smoking succeeds in preventing Americans from smoking.
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举一反三
【判断题】当下属的成熟水平不断的提高时,领导者可以减少对活动的控制。( )
A.
正确
B.
错误
【多选题】关于民事义务,下列说法正确的有( )。
A.
必须遵守,不能随意变更、抛弃
B.
不遵守民事义务将受到法律的强制和制裁
C.
民事义务的本质,是法律加于当事人的一种不利益
D.
民事义务也称为民事责任
E.
民事义务只有通过义务人积极地作为才能够实现
【简答题】计算机的时钟周期就是计算机的主频。( )
【简答题】关于电子商务当事人订立和履行合同的法律适用,下列说法正确的是: A.适用《电子商务法》《民法总则》《合同法》《电子签名法》等法律的规定; B.只适用《电子商务法》的规定,不适用其他法律规定; C.只适用《合同法》的规定; D.只适用《电子签名法》的规定。
【单选题】领导生命周期曲线模型概括了情景领导模型的各项要素。当下属的成熟水平 ( ) 时,领导者不但可以不断减少对下属行为和活动的控制,还可以不断减少关系行为。
A.
提高
B.
降低
C.
稳定
D.
变化
【简答题】煤是一种化石燃料,用煤作燃料生成的SO 2 气体会造成环境污染.有一种煤每燃烧1t就会释放出53.3kgSO 2 .如果将产生的SO 2 用熟石灰来完全吸收,其反应的化学方程式为:S0 2 +Ca(OH) 2 ═CaSO 3 +H 2 0,那么燃烧5t这种煤产生的SO 2 在理论上需用多少千克的Ca(OH) 2 来吸收?(计算结果取整数)
【判断题】计算机的时钟周期就是计算机的主题。
A.
正确
B.
错误
【简答题】锅炉按压力分为哪几类?
【判断题】计算机的时钟周期就是计算机的主频。( )
A.
正确
B.
错误
【判断题】领导生命周期理论认为:当下属的成熟水平不断提高时,领导者不但可以不断减少对下属行为和活动的控制,还可以不断减少关系行为。
A.
正确
B.
错误
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