TOEFL study
2013年05月28日 05:30
5:00-5:30
Langrich
today's lesson is NHK "heavy load".
Samor Air, which is the biggest airline companey in Samore, has decided to charge passangers on scale of their weight. It is the fairest way because the comsumption of airplane's fuel is in linear relation with the weight of airplane which contains passanger and their baggage.