阅读理解

　　At the moment，it may be difficult to imagine，but many people believe that，by the year 2100，we will live on the planet(行星) Mars.Our own planet，Earth，is becoming more and more crowded and polluted.We should build a better world on Mars.

　　First of all，transport should be better than they are today.Now it is difficult for spacecraft(宇宙飞船) to carry too large number of people to Mars梚t takes months.By 2100，travel to Mars will take a very short time in space shuttles that travel at half the speed(速度) of light.

　　Humans need water，air and food to survive.Scientists should be able to develop the plants that can grow on Mars.These plants can provide the air and food that we need.However，the scientists are not sure whether these plants can provide water.

　　Gravity(重力) will be the problem for the early settlers on Mars.The gravity on Mars will be about only three-eighth of the gravity on Earth.It is very dangerous for us because we can easily jump too high and float(漂浮) away into space.To prevent this，we have to wear special boots to make ourselves heavier.These boots will probably very popular and there will be many different designs for settlers to choose from.

　　Life on Mars will be better than life on Earth in many ways.We will have more space.Living in a dome with 10 bedrooms is highly possible.Many people thought that robots will do most of our work and we will have more time for our

hobbies.There will be no schools on Mars.Students will have a computer at home connecting to the inter-planet computer network.They can study，do homework and take exams in online schools.

　　However，in some ways，life on Mars may be worse than life on Earth.For example，food will be not the same as they are today，it may be in the form of pills(药片).

(1)

(2)

(3)

(4)

(5)

阅读理解

　　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 shouldnbe 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 ligh．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 pukkss 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 studetn 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)

(2)

(3)

(4)

(5)