11. Since people are always not satisfied with their present situation, they want further development.
    改進(jìn): 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.
    改進(jìn): 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.
    改進(jìn): They like an active life rather than a peaceful one.
    14. Some cigarettes may even cost a larger sum of money.
    改進(jìn): Some cigarettes may cost even more.
    15. Firstly, dissatisfaction encourages the discovery of new products.
    改進(jìn): Firstly, dissatisfaction encourages the invention of new products.
    16. Insgroupsto suit the needs of enteringsintoswork, students must grasp some technical skills.
    改進(jìn): Insgroupsto meet the needs of future work, students must learn some practical skills.
    17. It is very necessary more qualified scientists and technicians.
    改進(jìn): Qualified scientists and technicians are in great demand.
    18. This knowledge will become a part of your body.
    改進(jìn): This knowledge will become part of you.
    19. They cannot think clearly.
    改進(jìn): They cannot think straight.
    20. Money can improve their living standard.
    改進(jìn): Money can improve their life.