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1、Fill in the blanks using but,and,though and while.1._ its raining hard,he keeps on working outside.2.Kangkang can solve the problem,_ I cant.3.Mr.Lin is very kind _ he is very humorous.4.The suit fits me well _ I cant afford it.Though while and but 3Written workWhat good habits protect the environme
2、nt?List as many as you can.The more you list,the greener you are.Good Habits1.Turn off the lights when you leave a room.2.Walk or ride a bike instead of taking a bus or a taxi.3.Take a cloth bag when you go shopping.4.Dont use plastic bags.a.There are more than 3 000 power stations in the world that
3、 produce electricity by burning garbage to heat water.b.People use the movement of water to produce electricity.c.Wind is used for producing electricity in many places.d.People produce electricity from the sun.()()()()abdcChoose the right picture for each paragraph of 1a.abcChina is one of the first
4、 countries in the world to use biogas technology.Farmers recycle straw,grass and animal waste to make biogas.This renewable energy is used in peoples everyday life.Electric vehicles were developed in the 1990s.Now there are electric vehicles in many countries.They are very efficient and cost very li
5、ttle to run.Although electric vehicles produce no pollution,there will be an increase in electricity needs if they are widely used.In China,the best-known maglev train is the German-built one in Shanghai.It takes people just 7 minutes to go to the airport 30 km away and reaches a top speed of 431 km
6、 per hour.It is quiet and quick.There is no wheel noise,because there are no wheels.Maglev trains are very energy efficient and do not pollute the air.However,maglev guide paths are much more expensive than traditional steel railways.Read 1a and answer the following questions.Why isnt coal a good ma
7、terial?What is the disadvantage of using nuclear power?What do you think of electric cars?What do you think of the maglev train?It is very dirty and causes acid rain.Nuclear power can be very dangerous.It is quiet and quick.They are very efficient and cost very little to run.1bWork aloneRead 1a agai
8、n and fill out the following table.Way to produce powerAdvantageDisadvantagebiogaselectric vehiclemaglev trainrenewable efficient,cheap,no pollution quiet,quick,energy efficient,do not pollute the air There will be an increase in electricity needs.much more expensive than traditional steel railways.
9、Harm We have _ the earth and made it _.ProblemThe river is _ and the _ of the earth is rising.The earth is _ for help.Suggestion Plant _ trees,put the _ into dustbins and stop factories from pouring waste water _ into rivers.Listen to the passage.Fill in the blanks.pollutedsickdirtytemperaturecryingmorerubbishdirectly（录音）（录音）