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  3. What impact can mobile phones have on their users’ health? Many individuals are concerned about the supposed ill effects caused

What impact can mobile phones have on their users’ health? Many individuals are concerned about the supposed ill effects caused

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问题     What impact can mobile phones have on their users’ health? Many individuals are concerned about the supposed ill effects caused by radiation from handsets and base stations,【C1】______ the lack of credible evidence of any harm. But evidence for the beneficial effects of mobile phones on health is rather more【C2】______ . Indeed, a systematic review【C3】______ by Rifat Atun and his colleagues at Imperial College, London, gathers【C4】______ of the use of text-messaging in the【C5】______ of health care. These uses【C6】______ three categories; efficiency gains; public-health gains; and direct benefits to patients by【C7】______ text-messaging into treatment regimes.
    Using texting to【C8】______ efficiency is not profound science, but big savings can be achieved. Several【C9】______ carried out in England have found that the use of text-messaging reminders【C10】______ the number of missed appointments with family doctors by 26-39% , and the number of missed hospital appointments by 33-50% . If such schemes were【C11】______ nationally, this would translate【C12】______ annual savings of ￡ 256-364 million.
    Text messages can also be a good way to deliver public-health information, particularly to groups【C13】______ are hard to reach by other means. Text messages have been used in India to【C14】______ people about the World Health Organization’s strategy to control tuberculosis(肺结核) . In Iraq, text messages were used to support a【C15】______ to immunize nearly 5 million children【C16】______ polio(小儿麻痹症).
    【C17】______ , there are the uses of text-messaging as part of a treatment regime. These involve sending reminders to patients to【C18】______ their medicine, or to encourage compliance with exercise regimes or efforts to stop smoking. However, Dr. Rifat notes that the evidence for the effectiveness of such schemes is generally【C19】______ . More quantitative research is【C20】______ —which is why his team also published three papers this week looking at the use of mobile phones in health care in more detail.
【C13】
选项 A、those
B、whose
C、which
D、who
答案D
解析 语法知识。groups在这里意为“人群”，需要填一个关系代词以引导定语从句修饰groups，D项who是修饰人的关系代词，为正确答案。A项those不能引导定语从句；B项whose是关系形容词，是先行词的所有格，不合题意；C项which用于修饰物。
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考研英语一

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