At the moment, it may be difficult to imagine, but many people believe that, by the year 2100, we will
live on the planet Mars. Our own planet, Earth, is becoming more and more crowed and polluted. Luckily,
we can start again and build a better world on Mars. Here is what life could be like.
     First of all, transport should be much better. At present, our spaceships are too slow to carry large
numbers of people to Mars-it takes months. However, by 2100, spaceship can travel at half the speed of
light. It might take us two or three days to get to Mars!
     Secondly, humans need food, water and air to live. Scientists should be able to develop plants that can
be grown on Mars. These plants will produce the food and air that we need. However, can these plants
produce water for us? There is no answer now.
     There is a problem for us to live on Mars. Mars pulls us much less than the Earth does. This will be
dangerous because we could easily jump too high and fly slowly away into space. To prevent this, humans
on Mars have to wear special shoes to make themselves heavier.
     Life on Mars will be better than that on Earth in many ways, People will have more space. Living in a
large building with only 10 bedrooms is highly possible. Many people believe that robot will do most of our
work, so we have more time for our hobbies.
     There will probably be no school on Mars. Every student will have a computer at home which is
connected to the internet. They can study, do their homework and take exams in online schools. Each student
will also have their own online teacher called "e-teacher".
     However, 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 make many people feel ill. The spaceship will travel fast but the journey to Mars will probably
be very uncomfortable.

1. According to the text, by the year 2100, some of us will possibly live _____. 

A. on Mars
B. on the moon
C. under the sea
D. in the sun

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

A. Two or three days
B. A few months
C. A few days
D. A few years

3. In the future, the students on Mars _____.

A. will study mainly through the internet
B. will study mainly in a classroom
C. will meet each other face to face every day
D. needn't study at all

4. Life on Mars will be better than life on the earth because _____.

A. only a few people will live there
B. there will be more space and less work to do
C. there will be much delicious food
D. all students don't need to do any homework

5. According to the text, which of the following about Mars is NOT true?

A. Transport will be much better and faster.
B. We need to develop a special plant which can produce water.
C. On Mars, we can jump higher than on the earth.
D. Food will be much more tasty.