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  3. What impact can mobile phones have on their users’ health? Many people worry about the supposed ill effects caused by radiation

What impact can mobile phones have on their users’ health? Many people worry about the supposed ill effects caused by radiation

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问题     What impact can mobile phones have on their users’ health? Many people worry about the supposed ill effects caused by radiation from handsets and base stations, (1)_____ the lack of credible evidence of any harm. But evidence for the beneficial effects of mobile phones on health is rather more (2)_____ Indeed, a systematic review (3)_____ out by Rifat Atun and his colleagues at Imperial College, rounds up 150 (4)_____ of the use of text-messaging in the (5)_____ of health care. These uses (6)_____ three categories: efficiency gains; public-health gains; and direct benefits to patients by (7)_____ text-messaging into treatment regimes.
    Using texting to (8)_____ efficiency is not profound science, but big savings can be achieved. Several (9)_____ carried out in England have found that the use of text-messaging reminders (10)_____ 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 (11)_____ nationally, this would translate (12)_____ annual savings of ￡256-364 million.
    Text messages can also be a good way to deliver public-health information, particularly to groups (13)_____ are hard to reach by other means. Text messages have been used in India to (14)_____ people about the World Health Organization’s strategy to control lung disease. In Iraq, text messages were used to support a (15)_____ to immunize nearly 5 million children (16)_____ paralysis.
     (17)_____, there are the uses of text-messaging as part of a treatment regime. These involve sending reminders to patients to (18)_____ their medicine, or to encourage accordance with exercise regimes. However, Dr. Rifat notes that the evidence for the effectiveness of such schemes is generally (19)_____, and more quantitative research is (20)_____.

选项 A、Finally
B、However
C、Usually
D、Obviously
答案A
解析 上下文的理解。文章的第一段讲述了手机短信的三类用途。第二、三段分别是手机短信的第一、第二个功能，那么第三段应该就是最后一个功能，Finally"最后"符合题意，入选。However"然而，可是"，表转折，但文章此处并无转折含义，故排除；文章第一段提出短信的这些用途可以分为三类，下面三段分别阐述一种短信的用途，如选Obviously"明显地"，就不能体现文章的逻辑结构。Usually"通常"不符合题意，排除。
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