A. There will probably be no school on Mars.
B. It might take us two or three days to get to Mars.
C. There is a problem for us to live on Mars.
D. Food will not be the same.
E. First, people will have more space.
Many people believe that, by the year 2100, we will live on the planet Mars(火星). Here is what life could be like.
First of all, transport should be much better. By 2100, spaceship can travel at half the speed of light.  【小题1】 
Secondly, humans need food, water and air to live. Scientists should be able to find plants that can grow on Mars. These plants will provide us with food and air.
 【小题2】  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 in many ways.  【小题3】  It is possible to live in a large building with many bedrooms. Then, robot will do most of the work, so we have more time for hobbies.
 【小题4】 Every student can study, do their homework on the computer 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.  【小题5】Meals will probably be in the shape of pills(药片) and will not be as delicious as they are today. Also, space travel will make many people feel ill.

As prices and building costs keep rising, “the do-it-yourself”（DIY）trend（趋势） in the US continues to grow.
“We needed furniture for our living room,” says John Kose, “and we didn’t have enough money to buy it.” So we decided to try making a few tables and chairs. John got married six months ago, and like many young people these days, they are struggling （努力）to make a home when the cost of living is very high. The Koses took a 2-week course for $ 280 at a night school. Now they build all their furniture and make repairs around the house.
Jim Hatfield has three boys and his wife died. He has a full-time job at home as well as in a shoe-making factory. Last month, he received a car repair bill for $420. “I was very upset about it. Now I’ve finished a car repair course. I should be able to fix the car myself. ”
John and Jim are not unusual people. Most families in the country are doing everything they can save money so they can fight the high cost of living. If you want to become a “do-it-yourself”, you can go to DIY classes. And for those who don’t have time to take a course, there are books that tell you how to do things yourself.
【小题1】We know from the passage that many people ________ .