Many children use the Internet to get useful knowledge and information, and to relax in their free time. But some of them are not using in a good way. Here are some rules to make sure you are safe and have fun on the Internet.

Make rules for Internet use with your parents. For example, when you can go online, for how long and what activities you can go online.

Don’t give your password (密码) to anyone else, and never leak out the following information---your real name, home address, age, school, phone number or other personal information.

Check with your parents before giving out a credit (信用) card number.

Never send a photo of yourself to someone in e-mail unless your parents say it’s OK.

Check with your parents before going into a chat room. Different chat rooms have different rules and attract(吸引) different kinds of people. You and your parents must make sure it’s a right place for you.

Never agree to meet someone you met on the Internet without your parent’s permission (允许). Never meet anyone you met on line alone.

Always remember that people online may not be who they say they are. Treat everyone online as strangers.

If something you see or read online makes you uncomfortable, leave the website. Tell your parent or teacher right away.

Treat other people as you’d like to be treated. Never use bad language.

Remember—not everything you read on the Internet is true.

1. If you want a true friend on the Internet , you can ____________ .

A. tell the people what your name is.

B.meet the people on line alone.

C.write an e-mail about yourself.

D.get your parent’s permission.

2. It’s good for children to ________ on the Internet.

A. give password to others

B. get useful knowledge and information

C. give out a credit card number

D. go into a chat room as they’d like to

3.The underlined phrase “leak out” in the third paragraph may mean “________.”

A. give up B. put off

C. give out D. put away

4.If your parents don’t agree, never ________.

A. read anything on the Internet

B. relax in your free time

C. have a face-to face meeting with anyone you met online

D. treat other people as you’d like to be treated

5.This passage is mainly about “________”.

A. How to use Computers

B. Surfing on the Internet

C. Information on the Internet

D. Internet Safety Rules

Now, it may be difficult to predict the future, but many people believe that we will live on Mars by the year 2100. Our own planet, Earth, is becoming more and more crowded and polluted. Well, what problems will we need to solve before we prepare to go to Mars?

First of all, transport should be much better. At present, humans need to spend months going to Mars by spaceship. However, by 2100, spaceship can travel at half the speed of light. It might take us two or three days to get there!

Secondly, humans need food, water and air to live. Scientists should develop plants that can be grown on Mars. These plants will produce the food, water and air that we need. However, there is no answer for all the problems now.

There is also a problem for us to live on Mars. Mars attracts us much less than the Earth does. This will be dangerous bec ause we could easily jump too high and fly slowly away into space there. We will have to wear special shoes to make ourselves heavier.

In some ways, life on Mars may not be better than that on the earth today. Food will not be the same --- meals will probably be in the form of pills and will not be as delicious as they are today. Also, space travel will probably make many people feel very uncomfortable.

1. According to the passage, by the year 2100, we will possibly live________.

A. on Mars B. on the moon.

C. in the spaceship. D. in the sea.

2. So far, how long does it take us from the earth to Mars by spaceship?

A. Two or three days. B. A few days.

C. A few months. D. A few years.

3.According to the passage, which of the following is wrong?

A. A special plant which can produce water, air and food should be needed on Mars

B. We may go to Mars when transport is much better and faster.

C. We can jump higher on Mars than on the earth.

D. Food on Mars will be much better to eat.

4.Which looks like life on Mars according to the passage?

A. We can wear the shoes that we like to wear.

B. We can drink easily and conveniently.

C. We can walk faster than on the earth.

D. We can boil food to eat.

5.Why do we want to live on Mars?

A. Life on Mars is more interesting than that on the earth.

B. The earth is becoming dirty and crowded.

C. The journey to Mars is very interesting.

D. The scientists want us to do that.

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