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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.
【C19】
选项 A、unscientific
B、real
C、unconfirmed
D、legal
答案C
解析 上下文语义。根据句首的However以及后文“需要进行更多的定量化研究”，可以判断，有关这些手机短信功能效果的证据还不完全可信，C项unconfirmed意为“未经证实的”，符合题意，为正确答案。A项unscientific“不科学的”虽然放进句子中也通顺，但需要进一步的定量研究，去证明这些功能是否科学，而不是过早地下定论，故A项排除。如选B项real“真实的”或D项legal“合法的”，说明有关这些功能效果的证据是真实的或是合法的，而这样的证据是不需要进一步定量研究的，故二者不符合题意，排除。
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