题目内容：

Many children think mobile phones are cool. Mobile phones have nice colours and you can use it to talk with a friend at anytime and anywhere. In the USA，more than 90 million people use mobile phones. Many of them are children. For children，mobile phones are more than phone calls. They are fashionable.

Most mobile phone users don't know that some health problems have something to do with using mobile phones. Some scientists say that mobile phones give off radiation(辐射) and it may be bad for users. One study shows that mobile phone radiation can make people get some kinds of cancers(癌症). Other scientists say mobile phones have nothing to do with people's health.

Scientists say that people can keep themselves away from mobile phone radiation. One way is to use an earphone(耳机). Or people can make shorter calls.

 

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

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

2.Which of the following sentences is TRUE?

A. All scientists think mobile phones are bad for users.

B. Some scientists think mobile phones are bad for users.

C. Mobile phones are only good to old people.

D. Mobile phones are only bad for children.

3.The underlined phrase “give off” in Paragraph 3 means" ______" in Chinese.

A.发出       B.放弃       C.拒绝      D.传播

4.People can ______to keep themselves away from mobile phone radiation.

A. make longer calls         B. use an earphone

C. use more mobile phones    D. use smaller mobile phone