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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.
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.
“Most cancers have multiple causes,” she says, but she points to laboratory research that suggests low-energy radiation could damage cells that could possibly lead to cancer.
Children are more vulnerable(易受伤的)to radiation than adults, Ms. Davis and other scientists point out. Radiation that penetrates only five centimeters into the brain of an adult will reach much deeper into the brains of children because their skulls are thinner and their brains contain more absorptive fluid(易吸收的液体). No studies have yet been completed on cell phone radiation and children, she says.
Henry Lai, a research professor in the bioengineering department at the University of Washington, began laboratory radiation studies in 1980 and found that rats exposed to radiation had damaged DNA in their brains.
Ms. Davis recommends using wired headsets or the phone’s speaker. Children should text rather than call, she said, and pregnant women should keep phones away from the abdomen(腹部).
72. According to Ms Davis, brain cancer increase ____.
A. among children B. among old people
C. in the twenties D. among pregnant women
73. Why do children easily be affected by radiation?
A. Because they haven’t grown up.
B. Because they are too young to protect themselves.
C. Because they use cell phones more often than adults.
D. Because their skulls are thinner and their brains are easily hurt.
74. What can we conclude from the last paragraph?
A. Pregnant women should keep cell phones away.
B. People should use cell phones in the correct way.
C. If you are a child, you’d better text than make phone calls.
D. When you use a cell phone, use a wired headset or the phone’s speaker.
75. What does the passage mainly talk about?
A. Be careful when using cell phones.
B. Don’t hold your cell phone against your ear.
C. Rats exposed to radiation have damaged DNA in their brains.
D. Low-energy radiation could damage cells that could lead to cancer.
第二卷 非选择题(非选择题共35分)
第四部分写作(共二节,满分35分)
第一节 短文填词(共10小题;每小题1分,满分10分)
阅读下面短文,根据以下提示:1)汉语提示,2)首字母提示,3)语境提示,在每个空格内填入一个适当的英语单词,所填单词要求意义准确,拼写正确,并将该词完整地写在答题卡中相应的横线上。
I once had a little red umbrella that my father sent me on my first day to school, which is the most __76_____(令人难忘的) gift I’ve ever r 77 . He told me that it would protect me from rain and snow. ___78____ time went by, I realized life wasn’t all about laughter and happiness. It was about pains and t 79 , too. Every time I was d 80 hurt inside, I would open my little red umbrella to ____81___(去除)my pains and forget my painful thoughts. Many years l 82 , that little red umbrella was gone, together with the days when I wept u 83 the little umbrella. However, every time it ___84____, I will still think of that little umbrella in my ___85____(童年). Even in my dreams, I am still looking for it.
76.___________ 77.___________ 78. ___________ 79.___________ 80.____________
81.___________ 82.___________ 83. ____________84.____________85.___________
第二节 书面表达 (25分)
某英语报社开辟了中学生习作专栏。本期的话题是:注重日常学习、工作和生活中的细节。因为细节往往决定成败。请你以“We Should Pay Much Attention to Details”为题,用英语写一篇短文,谈谈自己的一些看法。
注意:1.词数120左右;
2.短文中不能出现本人相关信息。
【思路点拨】 本文是一篇命题作文,属于议论文类。成文时要注意:1.提出论题We Should Pay Much Attention to Details;2.分析问题:为什么我们应该注意细节;3.解决问题:我们应该怎样做,发表自己的看法。
英语学习 http://www.yggk.net/english/