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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
【C5】
选项
答案K
解析 该空格位于不定冠词a和形容词direct之后，而且后面接有介词of引出的从句，据此推断空格处应该填入一个名词。分析句子可知，句子由and和表示因果关系的thus连接，前一句提到受试者们在牙疾诊断片上被留下红色的污点，后一句提到他们对保护牙齿的重视程度，根据常识也可知，进行医疗检查就是为了发现存在的疾病或者出现的问题，因此，牙疾诊断片上留下的红色污点能够反映出人们对牙齿保护的重视程度，由此确定答案为K)indication“迹象，指示”。备选名词还有credibility“可信度，确实性”，dimensions“规模，维度”，sensitivity“敏感，敏感性”，但均不符合文意，故可以排除。
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