5.to 介词to的基本用法。
6.injuries 名词作宾语,根据常识要用复数。
7.is bitten 由句意可知用被动语态。
8.under 根据句意可知。
9.and 前后句意为顺承关系,故填and。
10.a 不定冠词表示“一个”。
Ⅱ.阅读理解
(2017·望城二中高三月考)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,Black Berry'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.
Brain cancer is a concern that Ms.Davis examines.Over all,there has not been an increase in its incidence since cell phones arrived.But the average masks an increase in brain cancer in the 20-to-29 age group and a drop for the older population.
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