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ought when I began to talk like a tourist guide. “The Great Wall is one of the wonders in the world. We are very proud of it.” Soon I was interrupted again by his words:“You don’t say!” I couldn’t help asking, “Why do you ask me not to talk about it?” “Well, I didn’t request you to do so, ” he answered, greatly surprised. I said, “Didn’t you say’ you don’t say?” Hearing this, the Englishman laughed to tears. He began to explain, ‘You don’t say’ actually means ‘really!’ It is an expression of surprise. Perhaps you don’t pay attention to English idioms.” Only then did I know I had made a fool of myself. Since then I have been more careful with idiomatic expressions. Remember: what the English teachers said is always right to us students. 21. At first, on hearing “You don’t say,” I thought the foreigner meant _______. A. I had to stop talking B. he was only interested in the Great Wall C. I had talked too much D. he was not interested in the topic22. The underlined word in the first paragraph probably means _______. A. unlucky B. important C. terrible 23. Which of the following is true according to the passage? A. The Englishman left China without seeing the Great Wall. B. The Englishman wanted to see the Great Wall after I talked about it. C. The Englishman wanted me to act as his guide. D. The Englishman visited the Great Wall and thought it worth visiting.BThe Internet has led to a huge increase in creditcard(信用卡) fraud. Your card information could even be for sale in an illegal Web site(網(wǎng)站).Web sites offering cheap goods and services should be regarded with care. Online shoppers who enter their creditcard information may never receive the goods they thought they bought. The thieves then go shopping with your card number—or sell the information over the Internet. Computers hackers(黑客) have broken down security(安全) systems, raising questions about the safety of cardholder information. Several months ago, 25 000 customers of CD Universe, an online music retailer(批發(fā)商), were not lucky. Their names, addresses and creditcard numbers were posted on a Web site after the retailer refused to pay US $157 828 to get back the information. Creditcard firms are now fighting against online fraud. Master card is working on plans for Webonly credit card, with a lower credit limit. The card could be used only for shopping online.However, there are a few simple steps you can take to keep from being cheated. Ask about your creditcard firm’s online rules: Under British law, cardholders are responsible(對(duì)…負(fù)有責(zé)任的) for the first US $78 of any fraudulent spending. And shop only at secure sites: Send your creditcard information only if the Web site offers advanced secure system. If the security is in place, a letter will appear in the bottom righthand corner of your screen. the Web site address may also start with ://the extra “s” stands for secure. If in doubt, give your creditcard information over the telephone. Keep your password safe: Most online sites require a user name and password before placing an order. Treat your passwords with care. 24. What do most people worry about the Internet according to this passage? A. A lot of stolen creditcards were sold on the Internet. B. Many Web sites are destroyed. C. Fraud on the Internet. D. Many illegal Web sites are on the Internet. 25. What is the meaning of “fraud”? A. safety B. sale C. payment D. cheating26. How can the thieves get the information of the creditcard? A. The customers give them the information. B. The customers sell the information to them. C. The thieves steal the information from Web sites. D. Both A and B. 27. How many pieces of advice does the passage