说为什么!
1.Yourcountryissending145athletestotakepartinthePlympicGames.Theyarealltravellingbyair.Thesportsreportersaregoingbycoach.Eachofthetwocoachescancarry56prople.Theteammanagersaregoingbycar.Theytravelinfivecars,eachcarwithfourseats.480supportersarearrivingbytrain.
Howmanypeopleintotal?