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  3. Any American who has bought a pack of cigarettes since the mid-60s might have seen the health warnings. It says, "SURGEON GENERA

Any American who has bought a pack of cigarettes since the mid-60s might have seen the health warnings. It says, "SURGEON GENERA

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问题     Any American who has bought a pack of cigarettes since the mid-60s might have seen the health warnings. It says, "SURGEON GENERAL’S WARNING: Smoking Causes Lung Cancer, Heart Disease, And May Complicate Pregnancy." Such government warnings work,【C1】________— research has shown that smokers in countries with strong warnings know more about smoking【C2】________than those in countries where warnings are weaker. But it’s unclear whether smokers who see any warning【C3】________smoke less.
    Public-health advocates have known for years that individualized messages are far more【C4】________at getting smokers to stop. For instance,【C5】________a doctor reminds a patient that her sister has promised to help her【C6】________, that patient will be much more likely to stop smoking than someone who just sees a(n)【C7】________message on a cigarette pack. A recent study shows that tailored antismoking messages engage brain regions involved in how people see themselves. Those regions are associated with emotion【C8】________basic human awareness and, possibly, awareness of others’【C9】________of us.
    The authors of the study, a University of Michigan team led by psychologist Hannah Faye Chua,【C10】________91 smokers who wanted to quit. The participants, who smoked an average of 17 cigarettes per day,【C11】________medical imaging scans for one hour while different messages appeared on a screen. Some messages were tailored to their【C12】________histories (for example, " A concern you have is being tempted to smoke when【C13】________other smokers"). Some messages were general anti-smoking【C14】________.
    The researchers found that the tailored messages【C15】________the two brain regions significantly more than the non-tailored and【C16】________messages. In other words, reading a short sentence changed their brain activity—【C17】________those who showed stronger activity in those regions were more likely to quit smoking.
    The reason this paper is important is that it【C18】________a growing body of research showing that what is often mocked as  "talk therapy" can produce real changes in brain【C19】________. If you really want to quit smoking, you should commit to a(n)【C20】________behavioral-therapy program. It will not only help you stop; it could change how your brain works.
【C1】
选项 A、in fact
B、of course
C、sort of
D、by chance
答案C
解析 本句提到，有强烈健康警示的国家的烟民比警示弱的国家的烟民对吸烟的……认识得更多。说明这个警示是有作用的。但下文提到，But it’s unclear…说明并不确定警示所起的作用有多大。因此选C项sort of“有几分地”。A项in fact“事实上”，B项of course“当然”，这两个词组都表示非常肯定的意思，与下文的But it’s unclear…不相符。D项by chance“偶然”，下文说有强烈健康警示的国家民众对吸烟的认识更多，说明这些警示并不是偶然才起作用。  
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