WARNING: Holding a cell phone against your ear or putting it in your pocket may be bad for your health.   

This sentence is a warning that you’d better not put it close to you when a new phone is bought. Apple company, for example, doesn't want IPhones to come closer to you than 1.5 centimeters; Research In Motion, BlackBerry's producer, recommends 2.5 centimeters.

(1)If cell phone use can        health problems, the         will be very serious. Americans spend 2.26 trillion minutes chatting on cell phones every year, which brings $109 billion for the wireless businessmen.

Devra Davis, an epidemiologist(皮肤病专家) who has worked for the University of Pittsburgh, has published a book about mobile phone radiation(辐射)"Disconnect." Davis studies how often brain cancer happens during different age groups. She finds a big increase in brain cancer in the 20-to-29 age group and a drop for the older people.

Children are more easily hurt by radiation than grown-ups, Ms. Davis and other scientists point out. But no studies have yet been finished on cell phone radiation and children, she says.

Henry Lai, a research professor, began lab radiation studies in 1980 and found that mice exposed to(暴露在) radiofrequency(电波频率)radiation had destroyed DNA in their brains.

Ms. Davis recommends using wired earphones(有线耳机)or the phone's speaker. (2)Children should send text messages rather than call, she said, and pregnant(怀孕的) women should keep phones away from their bodies.

1.在(1)句空白处填入适当的词使句意完整、上下文通顺。

2.将(2)句翻译成中文。

3.回答问题:What kind of people with brain cancer are getting more and more?

4.找出同义句。

Scientists are still carrying on with the studies on cell phone radiation and children

5.找出或写出该短文的主题句。

 

  Everyone can feel stressed out because of too many things happening in your life. Teenagers, however, have __36__ opportunities to get stressed than people in any other age group. Being a teenager is hard.

      You are not a children any more, but you are not __37__, even though you have to deal with some grow-up problems and made decisions by __38__. Families can be one of the biggest causes(原因)of stress, such as problems of arguing with __39__ or brothers or sisters. Teenagers also have lots of stress from __40__, either from their teachers or from their classmates. Some teenagers also feel __41__ about choosing their education after high school. Getting a place at university can be very difficult and some can’t __42__ to go to university. It is hard for some teenagers to get a job after they graduate. There are so many young people finishing school __43__ not enough jobs for them. Though there is a lot of stress, you can find many ways to __44__ it. Talking to people is one of the best ways to deal with stress. It may sound __45__, but it is helpful.

1. A. more                        B. fewer                   C. many

2.A. a baby                      B. a teenager                C. an adult

3.A. yourself                   B. himself                    C. myself

4.A. teachers                   B. parents                    C. classmates

5.A. family                      B. society                   C. school

6. A. relaxed                     B. stressed                   C. excited

7. A. afford                      B. offer                      C. refuse

8.A. and                        B. but                      C. or

9. A. agree with                  B. talk with                  C. deal with

10. A. simple                      B. difficult                   C. good

 

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