7BU6知识背景课

Unit 6 ElectricityWhats this,do you know?About water:Water is_.We should_.How to save water?We can take a shower instead of a bath.We should turn the tap off when we brush teeth.We can use used water to flush the toilet.We shouldnt play with water.We should stop others when they waste water.Three Gorges DamHydro power stationIt can make electricity with water powerPower station:It can make electricity with coal.kul Power station:It can make electricity with wind power solar powersul Nuclear power station:It can make electricity with nuclear power.nju:kli Electricitywater powerwind powersolar powercoalnuclear powermake/produceenergies-energyendi ElectricityElectric appliancesplains 器具Give some examples about electric appliances at home:washing machinefridgeAir conditionerTV setcomputermobile phonerice cookertelephonemicrowave oven DCDigital Cameraelectric kettle maikrweiv diditl ketl Choose the correct answers to complete the sentences.1.If you reply to a question,you _ it.A.ask B.answer C.know2.A foolish person usually does _ things.A.harmful B.silly C.smart3.When my computer is connected to the Internet,the Internet _ my computer and the other computers in the world together.A.joins B.carries C.putsABB4.If you ask someone to wait for a moment,you will come back in _.A.a long time B.a short time C.a few hours5.Batteries provide toy cars with _.A.electricity B.heat C.oil6.You should tidy up the table means you should _the table.A.move B.set C.cleanBAC()7.I want to have a conversation with you,because I want to _ you about the meeting.A.know about B.learn about C.talk with()8.Why was the fan still on?Oh,sorry.I forgot to_.A.turn it on B.switch it off D.get it off()9.I can see nobody in the classroom,it means I cant see_ A.someone B.anyone C.somebodyCBBDont forget to switch off your lights for Earth Hourat 8.30pm on the last Saturday of March In our daily lives,we should know the importance of electricity,it is very useful and valuable,we should save electricity.So just take action,from every little thing around us,we can make a difference.If you dont use the light/fan/computer/air conditioner/,Just turn it off!Switch it off!Shut it off!Lets take part in the Earth Hour next year.Save electricity!Save energy!Protect our Earth!Protect our home!Please look around,if we dont the lights,Just turn them off.And say Ok togetherThen have a break.