（二）
At the moment, it may be difficult to imagine, but many people believe that, by the year 2100, we will live on the Mars. Earth is becoming more and more crowded and polluted(受污染的). Luckily, we can start again and build a better world on Mars. 1
Transport should be much better. Now, our spaceships are too slow to carry large numbers of people to Mars—it takes months. 2 It might take us two or three days to get to Mars!
3 This will be dangerous because we could easily jump too high and fly slowly away into space. To stop this, humans on Mars have to wear special shoes to make themselves heavier.
There will probably be no schools on Mars. 4 They can study 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(药丸) and will not be as delicious as they are today. 5 The spaceship will travel fast but the journey to Mars will probably be very uncomfortable.

A. Here is what life could be like.
B. Every student will have a computer at home.
C. Mars pulls us much less than the Earth does.
D. Also, space travel will make many people feel ill.
E. To get high marks, students can study with others online.
F. However, by 2100, spaceship can travel at half the speed of light.
1.
2.
3.
4.
5.

1. A 2. F 3. C 4. B 5. D