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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