题目内容
（请给出正确答案）
According to the spokesman of Delta, preferred economy-class tickets_________
A. usually have a fixed price
B. Can be obtained with additional charge
C. are available 24 hours prior to the plane's departure
D. are only for Medallion members
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A、A miracle story
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A、Theological exposition, history, and literature
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A classification paragraph often includes examples and other supporting details that are organized according to types, categories or parts of a whole. Read the following sentences and order them in a logical way. Your answer to this question should be given in such form as 3-2-5-... People with Type B personality tend to be more tolerant of others, and they are more relaxed and reflective than Type A individuals. They were both cardiologists and developed their theory based on an observation of the patients with heart conditions in their waiting room. They experience lower levels of anxiety and display higher level of imagination and creativity. They strive toward goals without feeling a sense of joy in their efforts or accomplishments. Friedman and Rosenham first distinguished between Type A and Type B people. Type A individuals tend to be very competitive and self-critical.
A、5：1
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A、their easy accessibility
B、their high reliability
C、their lower interest rates
D、their wide availability
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