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  3. Fear can be an effective way to change behavior. One study compared the effects of high-fear and low-fear appeals on changes in

Fear can be an effective way to change behavior. One study compared the effects of high-fear and low-fear appeals on changes in

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问题    Fear can be an effective way to change behavior. One study compared the effects of high-fear and low-fear appeals on changes in attitudes and behaviors related to dental hygiene(卫生). One group of subjects was shown awful pictures of【C1】______teeth and diseased gums; another group was shown less frightening materials such as plastic teeth, charts, and graphs. Subjects who saw the frightening materials reported more anxiety and a greater【C2】______to change the way they took care of their teeth than the low-fear group did.
   But were these reactions actually【C3】______into better dental hygiene practices? To answer this important question, subjects were called back to the laboratory on two【C4】______ (five days and six weeks after the experiment). They chewed disclosing wafers(牙疾诊断片)that give a red stain to any uncleaned areas of the teeth and thus provided a direct【C5】______of how well they were really taking care of their teeth. The result showed that the high-fear appeal did actually result in greater and more【C6】______changes in dental hygiene. That is, the subjects【C7】______to high-fear warnings brushed their teeth more【C8】______than did those who saw low-fear warnings.
   However, to be an effective persuasive device it is very important that the message not be too frightening and that people be given【C9】______guidelines to help them to reduce the cause of the fear. If this isn’t done, they may reduce their anxiety by denying the message or the【C10】______of the communicator. If that happens, it is unlikely that either attitude or behavior change will occur.
A)accustomed I)eligible
B)carefully J)exposed
C)cautiously K)indication
D)concrete L)occasions
E)credibility M)permanent
F)decayed N)sensitivity
G)desire O)translated
H)dimensions
【C7】
选项
答案J
解析 分析句子结构可知，该空格前面为充当句子主语的名词，后面为to引出的介词短语，句子的谓语动词为brushed，据此推断空格处和to引出的介词短语共同充当定语，修饰前面的subjects。根据上下文可知，此处的受试者就是指前文提到的看到多幅可怕图片的受试者，即“高恐惧警告”。J)exposed的意思为“使暴露，使陷入”，与to搭配译为“暴露于……”，因此J)为本题正确答案。备选项里还有一个动词过去分词形式accustomed，其意思为“使习惯于”，不符合句意，可以排除。
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