my 1st DIY ppt .

1. Unit One Making a difference

2. Stephen Hawking

3. big bang

4. Quote: some famous Imagination is more important than knowledge.

5. It takes a very unusual mind to undertake analysis of the obvious. Alfred North Whitehead

6. Nothing in life is to be feared. It is only to be understood. ---Madame Curie

7. Genius is one percent inspiration and ninety-nine percent perspiration

8. You cannot teach a man anything; you can only help him find it within himself.

9. You have to believe in yourself. That’s the secret of success. 人必须相信自己，这是成功的秘诀。 —— Charles Chaplin卓别林 I like the dreams of the future better than the history of the past.我不缅怀过去的历史，而致力于未来的梦想。 —— T. Jefferson 杰弗逊

10. I think biology is…

11. …the most importantand useful.

12. …it is essential to protect the ecological balance and environment.

13. No biology, no medicine.

14. Well, maybe, but I think …

15. …chemistry is the most important and useful.

16. Chemical reaction produces many new things.

17. It is hard to say…

18. There are so many physical products. And physics is widely used in …

19. Without physics, we couldn’t outer space. explore

20. That’s true. But maths is …

21. …the basic science like a tool.

22. No doubt. But in my opinion,

23. …the computer can help us settle all kinds of problems at a high speed.