Mobile Phones（手機(jī)）at School

Many children think mobile phones are cool．They come in fun colors and let you talk with your friends at any time and anywhere．

In the United States，more than 90 million people use mobile phones．Many of those people are children．But I don't think it's good for students to use them at school．

Most mobile phone users don't think about the health problem caused by mobile phones．Some scientists say that mobile phones give off radiation（輻射）．It might be bad for people's health．One recent study shows that mobile phone radiation might raise a person's chance of getting some kinds of cancer（癌癥）．

Scientists say that people can protect themselves from mobile phone radiation．One way is to use a headset（耳機(jī)）．

Many students use mobile phones to send messages．They spend a lot of time doing that．Some students always hope to buy the latest mobile phones and this will waste their parents' money．

1．Why do the kids like mobile phones? Because ________．

A．some mobile phones can play games

B．other kids have mobile phones

C．parents have bought mobile phones for them

D．having mobile phones is cool

2．Which of the following ideas is wrong?

A．Most people who use mobile phones are children in the US．

B．Mobile phones makes it possible for children to communicate with their friends at any time and anywhere．

C．The writer is against students' using mobile phones in school．

D．Mobile phone radiation is bad for health．

3．What is the meaning of “raise … chance” in the third line of Paragraph 3?

A．獎勵給……的機(jī)會                                 B．提高……的機(jī)率

C．隨機(jī)獎勵給……                                     D．贊揚(yáng)

4．In how many ways does the writer explain the bad points of using mobile phones for students?

A．Four．                 B．Three．                C．One．                    D．None．

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