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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.  
【C13】
选项 A、owed
B、turned
C、led
D、inclined
答案B
解析 空格所在句的主语是“大卫.恩和他的同事们”，宾语是“一项研究”，下一句说到他们利用这项研究的成果进行下一步工作，结合空格后的介词to，可推断选B项turned，固定短语    turn to表示“转向、求助于”，此处意为“参考，参阅”。A项owed与to搭配意为“归功于”。其用法为owe sth．to sth．，这跟原文的结构不符。C项led to“导致，通向”代入空格，表示“大卫.恩和他的同事们导致了一项研究”，句意不通顺。D项inclined与to搭配一般为incline to do sth．，指“倾向于做某事”。
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