1. The artist's work pushes our civilization to a higher level.
改进：Artists' work upgrades our civilization.
2. For example， you work in a big factory.
改进： Suppose you work in a big factory.
3. You'll find you are fit for business and you can make it your main job.
改进：You'll find that you are cut out for business and you can make it your career.
4. We will own nothing at all if we depend on luck.
改进： We will get nowhere if we rely on luck.
5. He will get a higher salary to improve his living level.
改进： He will get a higher salary， thus improving his life.
6. Their brain is still very young.
改进： They are still immature.
7. Dissatisfaction makes people produce desire for better things.
改进： Dissatisfaction impels people for the better.
8. They can't analyze clearly what is right and what is wrong.
改进： They cannot tell right from wrong.
9. It will help children to form a good habit of dealing with time.
改进： It will help children learn to make good use of time.
10. Though it is not the best job， it afford to his life.
改进： Though it is not the best job， a job is a job. He can make ends meet with it.
11. Since people are always not satisfied with their present situation， they want further development.
改进： Since people are never satisfied with their status quo， they want further development.
12. The only thing they need to do is to find a job which can easily get big money.
改进： The only thing they need to do is to find a job that can bring them big money.
13. They like an active life but not a peaceful life.
改进： They like an active life rather than a peaceful one.
14. Some cigarettes may even cost a larger sum of money.
改进： Some cigarettes may cost even more.
15. Firstly， dissatisfaction encourages the discovery of new products.
改进： Firstly， dissatisfaction encourages the invention of new products.
16. Insgroupsto suit the needs of enteringsintoswork， students must grasp some technical skills.
改进： Insgroupsto meet the needs of future work， students must learn some practical skills.
17. It is very necessary more qualified scientists and technicians.
改进： Qualified scientists and technicians are in great demand.
18. This knowledge will become a part of your body.
改进： This knowledge will become part of you.
19. They cannot think clearly.
改进： They cannot think straight.
20. Money can improve their living standard.
改进： Money can improve their life.
21. Parents always think that children will get a good job and earn a lot of money.
改进： Parents always expect their children to get a good job and earn a lot of money.
22. If a student only cares about money， will lead to be unhappy all his life.
改进： If a student only cares about money， he will be misled and will be unhappy all his life.
23. One purpose of education is to study the way in which he studies later.
改进： One purpose of education is to learn to learn.
24. Many parents arrange their children go to learn piano.
改进： Many parents send their children to piano classes.
25. When I want to absorb somebody else's opinion， I will study with others.
改进： When I need second opinion， I will study with others.