_is not the necessary travel document when you go abroad（）
A. passport
B. visa
C. ID card
D. E-ticket itinerary
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When booking an international ticket online, the passenger should fill in the following information EXCEPT____（）
A. date and time of departure
B. passport number
C. destination city
D. baggage allowance
You may book___ seat on the flight to Shanghai at a lower price（）
A. an economy class
B. a business class
C. a first class
D. a premium class
After check-in, a passenger can get ______（）
A. a flight ticket
B. a visa
C. a boarding pass
D. a passport
In which ways can you book a flight ticket（）
A. train station
B. official website of the airlines
C. online ticket agency
D. telephone reservation
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