温馨提示：
此套题为Word版，请按住Ctrl,滑动鼠标滚轴，调节合适的观看比例，答案解析附后。关闭Word文档返回原板块。
课时提升作业(六)
必修1 Module 6
Ⅰ. 阅读理解
A
Holding a cellphone against your ear or storing it in your pocket may be dangerous to your health. This explains a warning that cellphone 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 cellphone use, the possible effects are huge. Voice calls－Americans chat on cellphones 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 cellphone radiation, “Disconnect”. The book surveys scientific research and concludes the question is not settled.
