题目内容：

How to protect children Web fans from unsuitable material on-line while encouraging them to use the Internet has long been discussed in the US.

For some parents, the Internet can seem like a jungle (丛林), filled with danger for their children. But jungles contain wonders as well as dangers and with good guides, some education and a few precautions (预防), the wilds of the Internet can be safely navigated . "Kids have to be on-line. If we tell our kids they can’t be allowed to surf the Internet, we are cutting them from their future,” said an expert.

Most kids have started to use search engines. Many of them are great for finding tons of interesting Internet sites, and they can also locate places where you might not want your kids to go. There are search engines designed just for kids. A certain software contains only sites that have been selected as safe. The most popular way would be to use what is known as a “content screener ". But this can’t be wholly reliable, and the best thing parents can do is to talk to their kids and let them know what is OK or not OK to see or to do on the Internet. Another way is that Mum or Dad is nearby when the child is surfing the Internet.

A few other tips:

--- Don't put the PC in the child's room but keep it in an area where Mum or Dad can keep an eye on things. That also makes the Internet more of a family activity.

--- Ask your child what he or she has been doing and about any friend they make online,

--- Tell your child not to give on-line strangers personal information, especially like address and phone number.

--- And tell your children never to talk to anyone they meet on-line over the phone, send them anything, accept anything from them or agree to meet with them unless you go along.

1.What is the best way to protect children from improper materials?

A. To fix a content screener on the computer.

B. To be nearby when they are surfing the Internet.

C. To talk to them and persuade them to tell right from wrong.

D. To buy some search engines for children.

2.Which of the following is TRUE according to the passage?

A. Surfing the Internet is the best way of educating children.

B. Using a content screener is most reliable for keeping children having ways to the Internet.

C. Search engines can help children to select materials fit for them.

D. Children’s not having chances to go to the Internet may have effect on their progress.

3.According to the passage, we can infer that _____.

A. softwares fit for children want programming.

B. the Internet will be protected by law

C. the Internet contains a lot of harmful sites

D. a child who is on-line is in danger

4.What does the passage tell us most?

A. Education.       B. Precautions.

C. Search engines. D. Software.