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题目内容
（四川民族学院大学英语 B卷）
In order to get the first reward, passengers must fly at least____.
A、for 6 months
B、20,000 miles
C、3,000 bonus Miles
D、once in three weeks
A、for 6 months
B、20,000 miles
C、3,000 bonus Miles
D、once in three weeks
参考答案
