1. When a train is running here,a butterfly is sleeping on the way of the train,without any movement,what will happen?

6. Maglev

7. What is the full name of a Maglev? Magnetically levitated trains. What is a train? A long line of vehicles traveling in the same direction.

8. Match Column A with Column B Column AColumn B Para.1-2 A.the advantages of Maglev Para.3-4 B.the disadvantages of Maglev. Para.5-8 C.a general introduction of Maglev.

9. Where does a Maglev run? On a guidance track with magnets/ Above a guide way on a magnetic field. Where does a steel wheel train run? On a steel rail When running,how much does a Maglev float? About 10mm above the guide way

10. What pulls a Maglev forward? And how? The guideway itself, by changing magnetic fields. What pulls a steel train forward? An onboard engine.

11. How does a Maglev work? 1.Floating on a magnetic field. 2.Pulled by the guide way itself by changing magnetic fields.

12. Advantages 1. Easy in keeping.2. Having no friction. 3. Having less noise. 4. High speed. 5. Speeding up quickly. 6.climbing slopes easily. 两车交汇视频 磁悬浮视频

13. Disadvantages 1.more expensive 2.lack of existing infrastructure. 课间休息音乐

14. Language point learning and practice

15. What happened to China’s trains? 1. Jan.1,2003 Shanghai the world’s first commercial Maglev began to run. 2.July1,2006 3.Apr.18,2007 between Xi’ning and La’sa Qingzang railway began to serve the two cities. all over China the trains starting with “D”letter speeded up. 4.It is the time that China’s trains have speeded up since 1997. sixth