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题目内容
（四川民族学院大学英语 B卷）
Passengers should send their application to Air France____.
A、upon receiving the application form
B、within 3 weeks of their first flight
C、before their first flight with Air France
D、within 6 months of joining the program
A、upon receiving the application form
B、within 3 weeks of their first flight
C、before their first flight with Air France
D、within 6 months of joining the program
参考答案