单选题{{B}}Text 4{{/B}} Mark Twain once observed that giving up smoking is easy. He knew, because he' d done it hundreds of times himself. Giving up for ever is a trifle more difficult, apparently, and it is well known that it is much more difficult for some people than for others. Why is this so? 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 once observed that giving up smoking is easy. He knew, because he' d done it hundreds of times himself. Giving up for ever is a trifle more difficult, apparently, and it is well known that it is much more difficult for some people than for others. Why is this so? 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 once observed that giving up smoking is easy. He knew, because he' d done it hundreds of times himself. Giving up for ever is a trifle more difficult, apparently, and it is well known that it is much more difficult for some people than for others. Why is this so? 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.

单选题Dr Thrun strongly hold that the autonomous vehicles

单选题You may spend too much time in a bookshop because

单选题According to paragraph 4,

单选题According to the passage, which of the foilowing best describes normal Indian families? ______

单选题By "outraged rhetoric" (Paragraph 3), the author is talking about

单选题Lonely people, it seems, are at greater risk than the gregarious of developing illnesses associated with chronic inflammation, such as heart disease and certain cancers. A paper published last year in the Public Library of Science, Medicine , shows the effect on mortality of loneliness is comparable with that of smoking and drinking after examining the results of 148 previous studies and controlled for factors such as age and pre-existing illness. Steven Cole of the University of California, Los Angeles, thinks he may know why this is so. He told the American Association for the Advancement of Science meeting in Washington, D.C., about his work studying the expression of genes in lonely people. Dr. Cole harvested samples of white blood cells from both lonely and gregarious people. He then analysed the activity of their genes, as measured by the production of a substance called messenger RNA. This molecule carries instructions from the genes telling a cell which proteins to make. The level of messenger RNA from most genes was the same in both types of people. There were several dozen genes, however, that were less active in the lonely, and several dozen others that were more active. Moreover, both the less active and the more active gene types came from a small number of functional groups. Broadly speaking, the genes less active in the lonely were those involved in staving off viral infections. Those that were more active were involved in protecting against bacteria. Dr. Cole suspects this could help explain not only why the lonely are iller, but how, in evolutionary terms, this odd state of affairs has come about. The crucial bit of the puzzle is that viruses have to be caught from another infected individual and they are usually species-specific. Bacteria, in contrast, often just lurk in the environment, and may thrive on many hosts. The gregarious are therefore at greater risk than the lonely of catching viruses, and Dr. Cole thus suggests that past evolution has created a mechanism which causes white cells to respond appropriately. Conversely, the lonely are better off ramping up their protection against bacterial infection, which is a bigger relative risk to them. What Dr. Cole seems to have revealed, then, is a mechanism by which social environment reaches inside a person"s body and tweaks its genome so that it responds appropriately. It is not that the lonely and the gregarious are genetically different from each other. Rather, their genes are regulated differently, according to how sociable an individual is. Dr. Cole thinks this regulation is part of a wider mechanism that tunes individuals to the circumstances they find themselves in.

单选题{{B}}Text 4{{/B}} "What a difference a word makes." The issue of semantics has been an ongoing complain against the media, which has been characterized by an increasing level of sensationalism and irresponsible reporting over the years, fostered by increasingly fierce competition and struggle for wider distributions and readerships. A focal point for the criticism is the coverage of high-profile criminal cases. With such headlines as "Mr. X Arrest for First-Degree Murder" prominently displayed across the front page, it has been argued that such provocative language influences public opinion, causing premature assumptions of guilt before the matter can be properly and legally decided in a court of law. The power of the media to influence public opinion and, by extension, legal and political perceptions, has long been established and recognized, spurring outcries when inaccurate or overly embellished stories result in unwarranted destruction of public image or intrusion into privacy of unwilling individuals. Reporters and editors take the utmost care in their choice of words for use in their articles, but with constant pressure to create provocative headlines in order to sell their papers, the distinction between respectable periodicals and trashy tabloids is becoming thinner every day. The dilemma is exacerbated by the public's seeming short attention span, putting the papers under pressure to make their stories as attention-grabbing as they are accurate. Further obfuscating the situation is the fact that the same phrase can be interpreted in a myriad of different ways depending on who reads it, making it hard for one to judge whether a line is excessive or not. Whatever the causes and effects, however, the freedom of pres laws in the United States mean that any change to the style employed by the media must be self-imposed. In that respect, it appears that nothing will be changing in the near future, since the public's insatiable hunger for controversy and scandal continues to dominate and set the pace for marketable reporting. As the sensationalism and its related effects continue into the longer term, however, there will no doubt be more outcry as the trend continues. This will possibly result in an upheaval of the system; favoring more accurate, unembellished reporting, consisting of hard facts with a minimum of supposition or commentary and devoid of rumors and other questionable sources of information. If and when that occurs, we can truly state with pride that our media industry is only a free one, bat a responsible and reliable one.

单选题{{B}}Directions:{{/B}} Read tile following text. Choose the best word(s) for each numbered blank and mark A, B, C, and D on ANSWER SHEET 1. (10 points) Starting with his review of Skinner's Verbal Behavior, Noam Chomsky had led the psycholinguists who argue that man has developed an innate (天生的) capacity for dealing with the linguistic universals common to all languages. Experience and learning then provide only information about the{{U}} (1) {{/U}}instances of those universal aspects of language which are needed to communicate with other people within a particular language{{U}} (2) {{/U}}. This linguistic approach{{U}} (3) {{/U}}the view that language is built upon learned associations between words. What is learned is not strings of words per se (本身), but{{U}} (4) {{/U}}rules that enable a speaker to{{U}} (5) {{/U}}an infinite variety of novel sentences. {{U}}(6) {{/U}}single words are learned as concepts: they do not stand in a one-to-one{{U}} (7) {{/U}}with the particular thing signified, but{{U}} (8) {{/U}}all members of a general class. This view of the innate aspect of language learning is at first not readily{{U}} (9) {{/U}}into existing psychological frameworks and{{U}} (10) {{/U}}a challenge that has stimulated much thought and new research directions. Chomsky argues that a precondition for language development is the existence of certain principles "intrinsic (原有的) to the mind" that provide invariant structures{{U}} (11) {{/U}}perceiving, learning and thinking. Language{{U}} (12) {{/U}}all of these processes; thus its study{{U}} (13) {{/U}}our theories of knowledge in general. Basic to this model of language is the notion that a child's learning of language is a kind of theory{{U}} (14) {{/U}}. It's thought to be accomplished{{U}} (15) {{/U}}explicit instruction, {{U}}(16) {{/U}}of intelligence level, at an early age when he is not capable of other complex{{U}} (17) {{/U}}or motor achievements, and with relatively little reliable data to go on. {{U}}(18) {{/U}}, the child constructs a theory of an ideal language which has broad{{U}} (19) {{/U}}power. Chomsky argues that all children could not develop the same basic theory{{U}} (20) {{/U}}it not for the innate existence of properties of mental organization which limit the possible properties of languages.

单选题Most of us have seen a dog staring at, sometimes snarling at, and approaching a reflection of itself. For most animals, seeing their own image in a mirror acts as a social stimulus. But does the dog recognize itself, or does the reflection simply signal a potential companion or threat? This question is interesting for a number of masons. Apart from curiosity about the level of animals' understanding, research on serf- recognition in animals has several benefits. It provides some insight into the evolutionary significance of this skill of serf-recognition and into the level and kinds of cognitive competence that the skill requires. Such research also indicates the kinds of learning experiences that determine the development of self-recognition. In addition, work with animals fosters the use of techniques that are not dependent on verbal responses and that may therefore be suitable for use with preverbal children. The evidence indicates that dogs and almost all other nonhumans do not recognize themselves. In a series of clever experiments, however, Gallup has shown that the chimpanzee does have this capacity. Gallup exposed chimpanzees in a small cage to a full-length mirror for ten consecutive days. It was observed that over this period of time the number of serf-directed responses increased. These behaviors included grooming parts of the body while watching the results, guiding fingers in the mirror, and picking at teeth with the aid of the mirror. Describing one chimp, Gallup said, "Marge used the mirror to play with and inspect the bottom of her feet; she also looked at herself upside down in the mirror while suspended by her feet from the top of the cage; she was also observed to stuff celery leaves up her nose using the mirror for purposes of visually guiding the stems into each nostril." Then the researchers devised a further test of serf-recognition. The chimps were anesthetized and marks were placed over their eyebrows and behind their ears, areas the chimps could not directly observe. The mirror was temporarily removed from the cage, and baseline data regarding their attempts in touch these areas were recorded. The data clearly suggest that chimps do recognize themselves, or are self-aware, for their attempts to touch the marks increased when they viewed themselves. Citing further evidence for this argument, Gallup noted that chimpanzees with no prior mirror experience did not direct behavior to the marks when they were first exposed to the mirror; that is, the other chimpanzees appeared to have remembered what they looked like and do have responded to the marks because they noticed changes in their appearance.

单选题{{B}}Part A{{/B}}Directions: Read the following four texts. Answer the questions below each text by choosing A, B, C or D． {{B}}Text 1{{/B}} Before the economy fell apart, it was Britain's society that was supposed to be in terminal decline, especially in the eyes of the Tories. David Cameron, the Conservative Party leader, was wont to bemoan "broken Britain", mired in moral degeneracy, with high rates of teenage pregnancy, low rates of marriage and other less quantifiable breakdowns in the civilised scheme of things. Such antediluvian worries were raked over again on July 13th when Iain Duncan Smith, a former Tory leader, called for an official endorsement of marriage. Mr Duncan Smith cites several reasons to encourage wedlock, including family stability (married couples are much less likely to split than cohabiting ones ) and healthier children who do better in later life. There was talk of state-run counselling, pro-marriage propaganda in schools and mandatory "cooling-off" periods before divorces. Mr Duncan Smith favours tax breaks for married couples, something that Labour has long refused to endorse. It is true that marriage is a declining institution. Marriage rates are at their lowest since 1895．But, curiously, those who do marry now stay together for longer. Divorce rates are falling, not rising, and have been for several years. In 2007 11.9 married couples per thousand untied the knot, down from 12.2 the year before and the lowest since 1981．The time that divorcing couples endure each other before flinging back the rings has lengthened too., from 10.1 years in 1981 to 11.7 in 2007．Indifference towards the sacrament of marriage appears strongest among the elderly, not the feckless young. Since 2004, when the overall divorce rate peaked at 14.1 per thousand, over-60s have been the only part of the population whose rates have continued to rise. There are plenty of competing explanations for the diminishing appeal of divorce, and no easy way to discover which are true. Immigration may have helped, since immigrant families often have more conservative attitudes than the degenerate natives. Accountants and divorce lawyers reckon a string of recent big settlements may have acted as a deterrent (although it could equally have encouraged the poorer partners in financially unequal marriages). Falling marriage rates and falling divorce rates could be two sides of the same coin, says Kathleen Kiernan, a professor of social policy at York University. The unpopularity of marriage and the relative ease of divorce has left only a hard core of stable couples bound in wedlock. And the rise in the average age at which people get married (now 36 for men and 33 for women) is helping too, since older brides and grooms tend to stay together longer in any case. If so, politicians should be cautious about handing out tax breaks. Even if they work (and Ms Kiernan thinks they would have to be enormous to have much effect), chivvying unmarried couples into wedlock is likely to mean more divorces in the future.

单选题The passage is probably intended to answer tile question"_______

单选题The fund managers had doubts about Google because of the following reasons EXCEPT

单选题In a family where the roles of women and men are not sharply separated, notions of male superiority are hard to maintain. The pattern of sharing in tasks and in decisions makes for equality, and this (1) leads to further sharing. In such a home, the (2) boy and girl learn to (3) the equality more easily than did their parents and to prepare more fully for (4) in a world characterized by cooperation (5) by the "battle of the sexes". (6) the process goes too far and man's role is regarded as (7) important and that has happened in some eases-we are badly off as before, only (8) reverse. It is time to (9) the role of the American family. We are getting tired of "Momism" but we don't want to (10) it for a "neo-Popism". What we need, rather, is (11) that bringing up children involves a partnership of equals. There are signs that experts on the family are (12) of the part men play and that they have decided that woman should not receive all the (13) -nor all the blame. We have almost (14) saying that a woman's place is in the home. We are beginning, (15) , to analyze men's place in the home and to insist that he does have a place in it. Nor is that place (16) to the healthy development of the child. The family is a co-operative enterprise for which it is difficult to (17) rules, because each family needs to work to its own ways for (18) its own problems. Excessive authoritarianism has unhappy (19) , whether it wears skirts or trousers, and the (20) of equal rights and equal responsibilities is connected not only with a healthy democracy, but also with a healthy family.