It is indicated in Paragraphs 1 and 2 that______.
A. the way for customers to pay is still limited so far
B. several big retailers are planning to incorporate
C. the name of the new network may be changed
D. compatibility of the payment system is satisfactory
查看答案
Which of the following would be the best title of the passage?
A. Reform. in Airline Industry
B. The Hidden Costs of Flying
C. Dispute Between Airlines and Regulators
D. Pricing Mechanism of American Airlines