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专题检测卷(十七)
阅读理解
(建议用时: 25分钟)
A
(2013·十堰模拟)
Holding a cell phone against your ear or storing it in your pocket may be dangerous to your health. This explains a warning that cell phone manufacturers include in the small print that is often ignored when a new phone is purchased. Apple, for example, doesn’t want iPhones to come closer to you than 1.5 centimeters; Research In Motion, BlackBerry’ s manufacturer, recommends 2.5 centimeters.
If health issues arise from cell phone use, the possible effects are huge. Voice calls—Americans chat on cell phones 2. 26 trillion(万亿)minutes annually—earn $109 billion for the wireless carriers.
Devra Davis, an expert who has worked for the University of Pittsburgh, has published a book about cell phone radiation, “Disconnect. ”The book surveys scientific research and concludes the question is not settled.
