Many children think mobile phones are cool. They come in fun colors and you can talk with a friend anytime and anywhere. 

In the USA, more than 90 million people use mobile phones. Many of those people are chil-dren. For children, mobile phones are more than phone calls. They are fashionable. Most mobile  phone users don’t think about the health problems caused by mobile phones. Some scientists say  that mobile phones give off radiation(輻射) that might be bad for users. One recent study shows that mobile phone radiation might raise a person’s chance of getting some kinds of cancer(癌癥).Other scientists say mobile phones are not bad for people’s health. They say that they didn’t find any link between mobile phone use and cancer. Scientists say that they can protect themselves from mobile phone radiation. One way is to use an earphone, or people can make shorter calls.

1.Many children like mobile phones because they think mobile phones are _________.

A. cool B. colourful C. cheap D. their toys

2.In the USA, who thinks mobile phones are more than phone calls?

A. women B. men C. scientists D. children

3.The underlined word “give off” in the passage means “________”.

A. 發(fā)出 B. 放棄 C. 遠(yuǎn)離 D. 傳播

4.To protect themselves from mobile phone radiation, people can __________.

A. make longer calls B. use a earphone C. make shorter calls D. both B and  C

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