A、Tofacilitate,intravel,people'saccesstoeducationandculture
B、Toactasaninternationalagencyofcoordinationandcooperationtospreadtourism
C、Toavoiddiscriminationbetweencontractingcountries
D、Toimprovetheconditionsofcountrydwellersandsotocontributetoanexpandingworldeconomy

A、in
B、with
C、from
D、at

A、from
B、at
C、to
D、on