来源：环球教育网 www.ielts.com.cn 2005-11-4

　　Nowadays the jet plane is considered to be one of the most important and influential inventions in the world. To what extent do you agree or disagree with this opinion?

　　For:
　　Reach an average speed of 500 to 1000 kilometers per hour, the fastest means of transportation, 20 times faster than ships, 10 times than cars, 5 times than trains.
Take much less time
　　In this busy modern world in which efficiency is second to none, taking flight sounds fantastic.
Comfortable, free from the fatigue they may suffer when traveling by train or bus, cozy, noise-free cabin, food, entertainment
Safe, air crash,
Military, shorten/diminish the duration of war

　　Against:
　　popularity, frequency, time difference/lag, paralysis, varicosity, terrorist