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  3. Next time you feel the flu coming on, think twice before reaching for painkillers—they could do more【C1】________than good. With

Next time you feel the flu coming on, think twice before reaching for painkillers—they could do more【C1】________than good. With

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问题     Next time you feel the flu coming on, think twice before reaching for painkillers—they could do more【C1】________than good. With the flu season【C2】________way across Europe and North America, millions will be taking flu【C3】________, which commonly include painkillers. The general【C4】________advice in the UK and the US is to take painkillers. But al-though painkillers can make you feel better they al-so lower fever, which can make the virus【C5】________.
    The first analysis of the effect of this on the【C6】________shows that painkillers taken at current levels to【C7】________fevers could cause 2, 000 flu deaths each year in the US alone. Fever is thought to be a【C8】________against viruses, because many viruses find it hard to【C9】________above our normal 37 °C. Some studies have shown that lowering fever may【C10】________virus-related infections and increase the amount of virus we can【C11】________on to others.
    To find out what【C12】________this might have on a flu epidemic, David Earn and his colleagues【C13】________to a 1982 study which showed that fer-rets, a【C14】________animal model for human flu produced more【C15】________flu virus if their fevers were lowered with painkillers. Earn’s team used these findings to estimate how much more virus people with【C16】________flu might produce if their fevers were【C17】________.
    With the help of a mathematical model, Eam’s team【C18】________their estimates to the number of people a year in the US who get flu,【C19】________fever and take the drugs. They found that painkillers as used in the US could be increasing the【C20】________of ordinary winter flu by up to 5 per cent.  
【C16】
选项 A、ordinary
B、exceptional
C、specific
D、explicit
答案A
解析 此处提到研究小组要把动物实验的结果推及到人类服用止痛药治疗流感的情况。最后一段提到他们关于ordinary winter flu的推论，由此可判断选A项ordinary“普通的”。B项exceptional“例外的”和D项explicit“明确的”一般不用于修饰flu“流感”。C项specific“具体的”与下文的ordinary winter flu相矛盾。
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