最新仁爱版英语九年级上册U2T3SC课件

Look up these words in a dictionary.
power
电力； 动力；力
acid rain
efficient
效率高的； 有能力的
酸雨
nuclear
electric
电动的， 用电的
可更新的
renewable
原子核的， 原子能的； 核动力的
Look at the following pictures and guess the meaning of the underlined word.
Look at the following pictures and guess the meaning of the underlined word. Nuclear power is clean but it is very dangerous.
Read 1a and answer the following questions. Why isn’t coal a good material? It is very dirty and causes acid rain. What is the disadvantage of using nuclear power? Nuclear power can be very dangerous. What do you think of electric cars? They are very efficient and cost very little to run. What do you think of the maglev train? It is quiet and quick.
Look at the following pictures and guess the meaning of the underlined words. The maglev train in Shanghai uses magnets. The magnets push the train forward.
Look at the following pictures and guess the meaning of the underlined words. …people produce power from coal, but it is very dirty and causes acid rain.
Choose the right picture for each paragraph of 1a.
Electric vehicles were developed in the 1990s. Now there are electric vehicles in many countries. They are very efficient and cost very little to run. Although electric vehicles produce no pollution, there will be an increase in electricity needs if they are a 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 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 b are much more expensive than traditional steel railways.
Wind is used for producing electricity in many places.
Look at the following pictures and guess the meaning of the underlined word. More and more people are interested in electric cars.
China is one of the first countries in the world to use biogas technology. c Farmers recycle straw, grass and animal waste to make biogas. This renewable energy is used in people’s everyday life.
最新仁爱版九年级英语
Unit 2 Topic 3
Section C
warming up:
sing a song together. “ If You're Happy
Use but, and, while to answer the following questions. •What activities should we do to protect the environment? •What activities shouldn’t we do to protect the environment?
来自百度文库
1b
Work alone
Read 1a again and fill out the following table. Way to produce Advantage Disadvantage power biogas electric vehicle