1.Many people suspect that credit cards lure people to_______________.
2.The author seems to believe that even in the absence of credit cards. some people would undoubtedly_________________.
3.In Para. 3, in addition to the advantages of no need lo carry cash and being useful in emergencies, whatelse is said to be the advantage of credit cards?
4.What is the main idea of Para.4?
5.A credit card user can control himself to take better advantage of credit card if he knows well the truth that____________________.