15．People who travel a lot fly with Bel Air because they know they will get what they want.They want to go quickly，and safely，across the country，across the sea，or right across the world--and they know Bel Air will take them where they want to go.
Bel Air flies all the newest and fastest planes，to more towns and cities，in more countries of the world，than any other airline.Do you want to go to Paris，Washington，Tokyo？Bel Air will take you there，at all times of the day or night，right through the week.But Bel Air flies not only to the big cities in the rich countries--we fly two or three times to towns and cities in the very heart of Asia，Africa and South America.
People who travel a lot with Bel Air，because they know they will leave on time，and arrive on time.They know the food they will receive and the films they will watch will be of the very best.
Bel Air is second to none.When you fly，fly with Bel Air.
（1）Why do the experienced travelers choose to fly with Bel Air？
（2）How often does Bel Air fly to big cities like Tokyo？
（3）How often does Bel Air fly to towns and cities in the very heart of Asia，Africa and South America？
（4）What's the meaning of the sentence "Bel Air is second to none" ？
（5）What's the goal of the passage？
