Thank you ever so much for the book you gave me.（）

A . not at all. B . congratulations to you. C . that's right. D . you are welcome.

A . Never mind B . I'm glad you like it. C . Please don't say so. D . No, It's not so good.

A . No thanks B . I'm glad you like it C . Please don't say so D . No, it's not so good

M: Good morning. I hope I can answer your questions. W: Are people in rich countries happier than people in not-so-rich countries？ M: Well, I would say there is a relationship between national wealth and well-being. In other words, the economic wealth of a country does appear to reflect the overall well-being of its citizens. W: Does it mean that rich people in a country are happier than poor people？ M: In some poor Countries, satisfaction with one's financial situation does affect happiness. But once people are able to afford the basic necessities of life; having more money doesn't necessarily make them happier. W: What about rich places like Europe and United States？ Are income and happiness related？ M: Very little. Rich people are only slightly happier than the average citizen. W: I'm always wondering whether winning a lottery can bring happiness. M: Well, as a matter of fact, various studies show that lottery winners only get temporary joy. W: I guess wealth is like health. If you don't have your health or if you're extremely poor, you will be miserable. M: Yes, that's true. Happiness is wanting what we have rather than getting what we want. W: That's a nice way of putting it. In your opinion, do people become happier as their countries be come richer？ M: Well, if I take the case of the United States, from 1957 to 1996, the proportion of people who said that they were very happy declined from 35% to 30%. But during that same period, the average income per person in the United States doubled. W: So, you mean that a steady increase in a country's prosperity does not mean an increase in its people's happiness. M: That's right. What does the woman do？ A．A teacher of economics. B．A professor of studying happiness. C．A consultant on economic affairs. D．A specialist in political science.

A．so B．too C．as D．enough

A．We're glad to meet you B．I'm afraid you didn't have a good time C．Thank you for your coming D．Just stay a little longer, please

M: No problem. What are friends for？ Q: What can we find out from this conversation？ (19) A．The woman didn't finish her project. B．The man doesn't have a computer. C．The woman's computer was broken. D．The woman has bought a new computer.

A．No thanks B．I"m glad you like it C．Please don"t say so D．No, it"s not so good

A．A.Thank you for your coming B．B.Not at all C．C.It was nothing D．D.Never mind

A．A.Thank you the same B．B.You're welcome C．C.Don't do that

A．No, thanks B．I’m glad you like it C．Please don’t say so D．No, it’s not so good

A．Never mind. B．No thanks. C．My pleasure. D．Goodbye.

Few doctors believe any longer that it is simply a question of will power. And for those people that continue to view addicts as merely "weak", recent genetic research may force a rethink. A study conducted by Jacqueline Vink, of the Free University of Amsterdam, used a database called the Netherlands Twin Register to analyze the smoking habits of twins. Her results, published in the Pharmacogenomics Journal, suggest that an individual's degree of nicotine dependence, and even the number of cigarettes he smokes per day, are strongly genetically influenced. The Netherlands Twin Register is a voluntary database that contains details of some 7,000 pairs of adult twins (aged between 15 and 70) and 28,000 pairs of childhood twins. Such databases are prized by geneticists because they allow the comparison of identical twins (who share all their genes) with fraternal twins (who share half). In this case, however, Dr. Vink did not make use of that fact. For her, the database was merely a convenient repository of information. Instead of comparing identical and fraternal twins, she concentrated on the adult fraternal twins, most of whom had completed questionnaires about their habits, including smoking, and 536 of whom had given DNA samples to the register. The human genome is huge. It consists of billions of DNA "letters", some of which can be strung together to make sense (the genes) but many of which have either no function, or an unknown function, To follow what is going on, geneticists rely on markers they have identified within the genome. These are places where the genetic letters may vary between individuals. If a particular variant is routinely associated with a particular physical feature or a behavior. pattern, it suggests that a particular version of a nearby gene is influencing that feature or behavior. Dr. Vink found four markers which seemed to be associated with smoking. They were on chromosomes 3, 6, 10 and 14, suggesting that at least four genes are involved. Dr. Vink hopes that finding genes responsible for nicotine dependence will make it possible to identify the causes of such dependence. That will help to classify smokers better (some are social smokers while others are physically addicted) and thus enable "quitting" programs to be customized. Results such as Dr. Vink's must be interpreted with care. Association studies, as such projects are known, have a disturbing habit of disappearing, as it were, in a puff of smoke when someone tries to replicate them. But if Dr. Vink really has exposed a genetic link with addiction, then Mark Twain's problem may eventually become a thing of the past. Mark Twain is mentioned in the passage in order to show that A．he is a man with very Strong will power. B．it is easy to give up smoking temporarily. C．famous writers are often heavy smokers. D．only few people have his determination.

What is the speaker doing？ A．Accepting an award B．Holding an auction C．Organizing an event D．Overseeing a contest

A．It’s a pleasure B．My pleasure C．A pleasure D．So pleasur E．

A．having B．have C．has D．had