Reading

　　一、1.electricity 2.ran 3.out 4.of 5.battery 6.fridge 7.went 8.bad 9.yogurt 10.apartment 11.household 12.tasks

　　二、1.for a while 2.even worse 3.ran out of 4.doesn't work 5.It turns out that 6.have something in common

　　Listening

　　A.turn off the lights B.watching TV C.keep the door open D.sweater E.fan

　　Grammar

　　1.can 2.can 3.Must 4.can 5.May/Can 6.mustn't

　　Speaking and Writing

　　一、1.cable 2.touch 3.safe 4.wet 5.connect 6.electricity 7.appliance 8.instructions

　　二、

　　三、

　　Dear classmates,

　　Electricity brings colourful life in our classroom.It is very important and sometimesdangerous.To use electricity safely and wisely,we should turn off the lights and computers beforeeaving our classroom.Before using new electrical appliances,we must read the instructionscarefully.We can also unplug the electrical appliances before holidays.

　　On the other hand,we mustn't touch electrical appliances with wet hands.We shouldn't openwindows when the air conditioners are on.We shouldn't use any broken cables or devices.Using electricity safely and wisely can bring us a better life.

　　Focusing on culture

　　1.It is a global event on the last Saturday night of March every year.During the event,people around the world turn their lights off for one hour.2.The World Wildlife Fund(WWF)started Earth Hour in 2007,in Sydney,Australia.3.It has some potential problems.Forexample,when people turn off lights,they need to use candles.It may cause fire.4.WorldEnvironment Day.