单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Unit 16 Scientist at work,gravity,Relativity,Evolution,in a chemistry lab,doing an experiment,an English-Chinese dictionary,an English book and a notebook,in a physics lab,doing an experiment,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,chemistry,science of elements and their laws of combination and change,element,substance,gas,liquid,solid,chemical change,chemistry experiments,physics,science of matter and energy and of interactions between the two,matter,power,energy,physical change,physics experiment,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,1.,Safety,comes first!,2.Follow the teachers,instruction,s.,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,Speaking,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,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,