Unit 4 Flying In and Out 第1页Part I Getting readyB e f a d bC第2页Part Airport announcementsA第3页B第4页A.1.business trip 2.rates,21-day,30-day3.preference4.reservation5.cash,credit6.passport7.checked 8.claim,ticketPart III A trip to the States第5页B第6页Part More about the topic:In-flightService 第7页Part Memory test:Airline Information第8页