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.

The good things about computer games
They’re fun!
They can improve hand-eye coordination. That means you can think and do things more quickly.
You feel good when you can move up levels and see how well you’re doing.
Most games make you think about what you’re going to do, and they can help you improve the ability (能力) of solving problems.
You can play games on the Internet with people from all over the world.
Anyone can play computer games, even if they aren’t very good at sports, have a disability, or find it hard to talk to others.
The bad things about computer games
Kids may start hitting others in their lives just as they do in games because they may think it’s OK to hit others, or to talk to people, including their parents and teachers, impolitely.
If kids play games for a long time, they may not go out and exercise. They may start eating snacks while they play games and they will become too fat. Doctors are worried about kids that play too many computer games.
Playing games is a big problem for some people. They will play or think about games when they have time. This means they may stop talking with others and become really boring people.
【小题1】How many good things about computer games does the writer mention?

A man made a nice talking machine .It could weigh people’s weight .The man wanted to try the machine before he could make a lot of machines.
He put the machine into the waiting room of a station .There were always lots of people in and out .
The first one who used the machine was an Indian woman. She stood on the machine, the machine thought for a few seconds to decide which language to speak ,“Good morning ,Madam .”it said in Indian . “Your weight is 72 kilograms .That’s three kilograms more .If you eat more fruit and vegetables ,you will be soon all right .Please have a nice day .”
The second one to use the machine was a Chinese girl .She stood on the machine and waited to hear her weight. “Good morning ,Miss .”the machine said in Chinese. “Your weight is 45 kilograms .It’s all right for your age. Keep eating what you eat every day .Please have a nice day .”
The third one to use the machine was a very fat American woman .She thought for a long time to stand on the machine .The machine spoke quickly in English , “Good morning .Will one of you get off?”
【小题1】The machine in this passage could              .