2. gravity

3. Relativity

4. Evolution

6. in a chemistry lab doing an experiment

7. an English-Chinese dictionary, an English book and a notebook

8. in a physics lab doing an experiment

9. in a biology lab looking at something through a microscope

10. Warming up 1. Look at the textbook P22 and describe what can be seen in each picture. What is it about? 2. What English words do you think of for each subject of science? science physics chemistry biology

11. chemistry  science of elements and their laws of combination and change element substance gas, liquid, solid chemical change chemistry experiments

12. language  the system of sounds and words used by humans to express their thoughts and feelings sounds, words, phrases, sentences grammar communicate communication native/mother language foreign language

13. physics  science of matter and energy and of interactions between the two matter power energy physical change physics experiment

14. biology  science of life and of living organisms animal plant living things gene cell protein biology experiment

15. Listening 1.Listen to the tape. Tick the things that Mrs Zhu talks about. ( ) safety in the lab ( ) gloves ( ) gases ( ) experiments ( ) long hair ( ) liquids ( ) car accidents ( ) shoes ( ) flames

16. 1. Safety comes first! 2. Follow the teacher’s instructions. 3. Bottles may contain dangerous gases. 4. Immediately wash your eyes with a lot of water. 5. 1) Clear everything away and leave the classroom neat and clean. 2) Wash your hands with water and soap. 3) Turn off the lights and shut the windows. Listening P22

17. Useful expressions on P 23 be to do sth: should /must do, plan to do a maglev train in one’s opinion (a) waste of money much too / too much in the future mean to do sth./ mean doing sth. make (good/full) use of  The money would be better spent building more roads or railways in other parts of China.

18. inventionadvantagesdisadvantages Maglev train It is fast,clean and it doesn’t make any noise. It is a waste of money.

19. Scientific applications AdvantagesDisadvantages Cloning Nuclear energy Computers Space flights

20. Cloning 1.can help some women have babies 2.can help medical research 1.it is not natural to make people 2.dangerous, people use it to do strange things Nuclear energy 1.can make all the electricity we need 2.is a limitless resource 1.unsafe to all life if not controlled 2.can be expensive to build/repair Speaking on P23

21. Computers 1.makes communication faster 2.can keep information better 1.unsafe because of viruses 2.makes more problems than it solves Space flights 1.makes research of outer space possible 2.put communication satellites in space 1.expensive and dangerous 2.used by the army