仁愛版九上《topic 3 would you like to be a greener person》c-全文預(yù)覽
【正文】 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 street railways. b a b c 1. Why isn’t coal a good material? 2. What is the disadvantage of using nuclear power? 3. What do you think of electric cars? 4. What do you think of the maglev train? Because it is very dirty and causes acid rain. Because it can be very dangerous. It is quiet and quick. They are very efficient and cost very little to run. Answer the following questions according to 1a. Read 1a again and fill out the following table. Way to produce power Advantage Disadvantage biogas electric vehicle maglev train renewable efficient, cheap, no pollution qui
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