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.

A habit is any action that we have performed so often that it becomes something we do almost without thinking. Some of them are thought to be bad habits. People spend countless hours and dollars each year trying to drop these bad habits but often fail. Why? Change is hard work and there is no shortcut to achieve it. However, there is still some advice for you to follow.

First, look at why you do it. In other words, what’s the result of doing this thing? If your bad habit is shouting at people when you are unhappy or under pressure, what do you get from it? It may make you feel a little better for the moment. Or maybe you have a bad habit of leaving your homework undone. The result could be that you get more time to spend on the Internet!

Next, take a look on the other hand. What are you losing because of your habit? Shouting at other people is a bad habit because it makes people around you feel bad and unhappy. Leaving your homework undone is a bad habit because you may be punished by your teacher. Having more Internet time means that you are losing the chance to learn the things that you need to learn. When you think that way, you’ll find that it’s not wise to keep your bad habit! Now it is time to make a decision. What will you choose? I’m sure you will choose to do what you think is more important.

1.From the first paragraph we know that      .

A. people always fail to break bad habits

B. we must change all the habits we have

C. a habit is a terrible thing we can never change

D. it’s difficult, but we should do something about bad habits

2.The underlined sentence “there is no shortcut to achieve it” means that      .[来源:学_科_网]

A. it is not easy to give up bad habits       B. there is a long way and a short way

C. something dangerous may happen       D. we must cut bad habits in a short time

3. According to the passage, if you want to drop your habits, you have to      .

A. talk to others when you are in low spirits  B. know why you do what you do

C. finish your homework first                              D. spend less time on the Internet

4.. The main purpose of this passage is to ask us       .

A. not to shout at people when we are sad    B. not to spend much time on the Internet  

C. to give up our bad habits                                D. to decide what to choose

A habit is any action that we have performed so often that it becomes something we do almost without thinking. Some of them are thought to be bad habits. People spend countless hours and dollars each year trying to drop these bad habits but often fail. Why? Change is hard work and there is no shortcut to achieve it. However, there is still some advice for you to follow.

First, look at why you do it. In other words, what’s the result of doing this thing? If your bad habit is shouting at people when you are unhappy or under pressure, what do you get from it? It may make you feel a little better for the moment. Or maybe you have a bad habit of leaving your homework undone. The result could be that you get more time to spend on the Internet!

Next, take a look on the other hand. What are you losing because of your habit? Shouting at other people is a bad habit because it makes people around you feel bad and unhappy. Leaving your homework undone is a bad habit because you may be punished by your teacher. Having more Internet time means that you are losing the chance to learn the things that you need to learn. When you think that way, you’ll find that it’s not wise to keep your bad habit! Now it is time to make a decision. What will you choose? I’m sure you will choose to do what you think is more important.

1.From the first paragraph we know that      .

A. people always fail to break bad habits

B. we must change all the habits we have

C. a habit is a terrible thing we can never change

D. it’s difficult, but we should do something about bad habits

2.The underlined sentence “there is no shortcut to achieve it” means that      .

A. it is not easy to give up bad habits         B. there is a long way and a short way

C. something dangerous may happen       D. we must cut bad habits in a short time

3.According to the passage, if you want to drop your habits, you have to      .

A. talk to others when you are in low spirits  B. know why you do what you do

C. finish your homework first           D. spend less time on the Internet

4.The main purpose of this passage is to ask us       .

A. not to shout at people when we are sad    B. not to spend much time on the Internet  

C. to give up our bad habits                D. to decide what to choose