单选题The car ______ me 100,000 yuan. [A] spent [B] cost [C] took

单选题Jenny plays ______piano very well. [A] a [B] the [C] /

单选题 Karen Rusa was a 30-year-old woman and the mother of four children. For the past several months Karen had been experiencing repetitive thoughts that centered around her children's safety. She frequently found herself imagining that a serious accident had occurred; she was unable to put these thoughts out of her mind. On one such occasion she imagined that her son, Alan, had broken his leg playing football at school. There was no reason to believe that an accident had occurred, but she kept thinking about the possibility until she finally called the school to see if Alan was all right. Even after receiving their assurance that he had not been hurt, she described herself as being somewhat surprised when he later arrived home unharmed. Karen also noted that her daily routine was seriously hampered by an extensive series of counting work that she performed throughout each day. Specific numbers had come to have a special meaning to her; she found that her {{U}}preoccupation{{/U}} with these numbers was hampering her ability to perform everyday activities. One example was grocery shopping. Karen believed that if she selected the first item on the shelf, something terrible would happen to her oldest child. If she selected the second item, some unknown disaster would fall on her second child, and so on for the four children. Karen's preoccupation with numbers extended to other activities, most notable the pattern in which she smoked cigarettes and drank coffee, If she had one cigarette; she believed that she had to smoke at least four in a row, or one of her children would be harmed in some way. If she drank one cup of coffee, she felt compelled to drink four. Karen acknowledged the unreasonableness of these rules, but, nevertheless, maintained that she felt more comfortable. When she observed them earnestly, when she was occasionally in too great a hurry to observe these rules, she experienced considerable anxiety, in the form of a subjective feeling of dread and fear. She described herself as tense, uneasy, and unable to relax during these periods. The occurrence of rarely minor accidents does not reduce her belief that she had been directly responsible because of her inability to observe the rules about number.

单选题Which of the following is likely to be a topic of the Oprah Winfrey show?A. A new type of robot. C. Family budget planning.B. Racist hatred. D. Street violence.

单选题How long did Charles Darwin spend on his first sea voyage in Beagle?

单选题In recent years a new farming revolution has begun, one that involves the (21) of life at a fundamental level — the gene. The study of genetics has (22) a new industry called biotechnology. As the name suggests, it (23) biology and modem technology through such techniques as genetic engineering. Some of the new biotech companies specialize (24) agriculture and are working feverishly to duplicate seeds that give a high yield, that (25) diseases, drought and frost, and that reduce the need for (26) chemicals. (27) such goals could be achieved, it would be most beneficial. But some have raised concerns about genetically engineered crops. In nature, genetic diversity is created within certain space. A rose (28) be crossed with a different kind of rose, but a rose will never cross with a potato. Genetic engineering, (29) , usually involves taking genes from one species and inserting them into (30) in an attempt to transfer a desired characteristic. This could mean, (31) , selecting a gene which leads to the production of a chemical with anti-freeze quality from an arc- tic fish, and inserting (32) into a potato or strawberry to make it frost-resistant. In essence, then, biotechnology allows humans to (33) the genetic walls that separate species. Like the green revolution, (34) some call the gene revolution contributes to the problem of genetic uniformity — some say even more so that geneticists can employ techniques (35) as cloning and (36) culture, processes that produce perfectly (37) copies. Concerns about the erosion of biodiversity, therefore, (38) . Genetically altered plants, however, raise new issues, such as the effects that they may have (39) us and the environment. "We are flying blindly into a new era of agricultural biotechnology with high hopes, few constraints, and (40) idea of the potential outcomes," said science writer Jeremy Rifkin.

单选题Overshadowed by rows over Nigeria and Lockerbie, the Commonwealth"s attempts to refocus on trade and investment—the main theme of the Edinburgh heads of government meeting—attracted little attention and even less praise. Hopes were high that the summit"s economic statement would be of similar weight to the Harare Declaration, issued in 1991 to map out a political agenda for the ex-colonial club after the end of its preoccupation with the struggle against separateness. But the publication of the statement did little to divert attention from rows over the trial of two Lockerbie bomb suspects and over the decision by the Commonwealth Ministerial Action Group (CMag) not to impose new sanctions against Nigeria. CMag chose to ignore calls for Nigeria"s expulsion and the imposition of an oil embargo. They concluded that the situation would be reassessed if General Sani Abacha failed to honor his promise to hold fully democratic elections next October. The Prime Minister, Tony Blair, was delighted with the six-page document, entitled Promoting Shared Prosperity. "It signals the end of ideology and reflects basic principles of economic and social justice," Downing Street said. "It would have been unthinkable only a short time ago." But the declaration produced few surprises and many boring repetitions of statements based on affirmation of free market principles in the global economy. It was never going to be easy to bridge gaps between the Commonwealth"s 54 members, which include both wealthy countries, such as Britain, and some of the world"s poorest, such as Bangladesh. So Edinburgh stayed on safe ground, establishing four key principles: 1) The world economy should be geared towards promoting universal growth and prosperity for all; 2) There must be effective participation by all countries in economic decision-making; 3) The removal of obstacles that prevent developing countries from playing a full part in shaping the global economy; 4) International regimes affecting economic relations among nations should provide benefits for all. Caribbean members insisted on a reference to their troubles over banana exports threatened by a new World Trade Organization ruling, and won recognition of their "legitimate interests" and the need for help to diversify their economies. Practical measures included a decision to establish a Commonwealth Trade and Investment Access Facility to help developing countries take advantage of globalization. One additional source of revenue was opened up with the creation of a new fund for development in South Asian member countries. The Worldwide Fund for Nature said the Commonwealth had not matched its rhetoric about the dangers of globalisation by failing to promise higher-quality investment, protection for the environment and labour rights.

单选题What's the author's attitude towards foreign investment?

单选题It can be inferred from the passage that Mann believe that America as an empire built on military domination alone will not succeed because ______.

单选题______ we need more practice is quite clear. A. Which B. What C. That D. /

单选题Read the following text. Choose the best word or phrase marked A, B, C or D for each numbered blank. The idea that some groups of people may be more intelligent than others is one of those hypotheses that dare not speak its name. But Gregory Cochran is {{U}} {{U}} 1 {{/U}} {{/U}}to say it anyway. He is that {{U}} {{U}} 2 {{/U}} {{/U}}bird, a scientist who works independently {{U}} {{U}} 3 {{/U}} {{/U}}any institution. He helped popularize the idea that some diseases not {{U}} {{U}} 4 {{/U}} {{/U}}thought to have a bacterial cause were actually infections, which aroused much controversy when it was first suggested. {{U}} {{U}} 5 {{/U}} {{/U}}he, however, might tremble at the {{U}} {{U}} 6 {{/U}} {{/U}}of what he is about to do. Together with another two scientists, he is publishing a paper which not only {{U}} {{U}} 7 {{/U}} {{/U}}that one group of humanity is more intelligent than the others, but explains the process that has brought this about. The group in {{U}} {{U}} 8 {{/U}} {{/U}}are a particular people originated from central Europe. The process is natural selection. This group generally do well in IQ test, {{U}} {{U}} 9 {{/U}} {{/U}}12—15 points above the {{U}} {{U}} 10 {{/U}} {{/U}}value of 100, and have contributed {{U}} {{U}} 11 {{/U}} {{/U}}to the intellectual and cultural life of the West, as the {{U}} {{U}} 12 {{/U}} {{/U}}of their elites, including several world-renowned scientists, {{U}} {{U}} 13 {{/U}} {{/U}}They also suffer more often than most people from a number of nasty genetic diseases, such as breast cancer. These facts, {{U}} {{U}} 14 {{/U}} {{/U}}, have previously been thought unrelated. The former has been {{U}} {{U}} 15 {{/U}} {{/U}}to social effects, such as a strong tradition of {{U}} {{U}} 16 {{/U}} {{/U}}education. The latter was seen as a (n) {{U}} {{U}} 17 {{/U}} {{/U}}of genetic isolation. Dr. Cochran suggests that the intelligence and diseases are intimately {{U}} {{U}} 18 {{/U}} {{/U}}His argument is that the unusual history of these people has {{U}} {{U}} 19 {{/U}} {{/U}}them to unique evolutionary pressures that have resulted in this {{U}} {{U}} 20 {{/U}} {{/U}}state of affairs.

单选题He is taller than ______ in his class. [A] the other boy [B] other boy [C] the other boys

单选题Sincethedawnofhumaningenuity,peoplehavedevisedevermorecunningtoolstocopewithworkthatisdangerous,boring,burdensome,orjustplainnasty.Thatcompulsionhasresultedinrobotics-thescienceofconferringvarioushumancapabilitiesonmachines.Andifscientistshaveyettocreatethemechanicalversionofsciencefiction,theyhavebeguntocomeclose.Asaresult,themodemworldisincreasinglypopulatedbyintelligentgizmoswhosepresencewebarelynoticebutwhoseuniversalexistencehasremovedmuchhumanlabor.Ourfactorieshumtotherhythmofrobotassemblyarms.Ourbankingisdoneatautomatedtellerterminalsthatthankuswithmechanicalpolitenessforthetransaction.Oursubwaytrainsarecontrolledbytirelessrobotdrivers.Andthankstothecontinualminiaturizationofelectronicsandmicromechanics,therearealreadyrobotsystemsthatcanperformsomekindsofbrainandbonesurgerywithsubmillimeteraccuracy-fargreaterprecisionthanhighlyskilledphysicianscanachievewiththeirhandsalone.Butifrobotsaretoreachthenextstageoflaborsavingutility,theywillhavetooperatewithlesshumansupervisionandbeabletomakeatleastafewdecisionsforthemselves-goalsthatposearealchallenge."Whileweknowhowtotellarobottohandleaspecificerror,"saysDaveLa-very,managerofaroboticsprogramatNASA,"wecan'tyetgivearobotenough'commonsense'toreliablyinteractwithadynamicworld."Indeedthequestfortrueartificialintelligencehasproducedverymixedresults.Despiteaspellofinitialoptimisminthe1960sand1970swhenitappearedthattransistorcircuitsandmicroprocessorsmightbeabletocopytheactionofthehumanbrainbytheyear2010,researcherslatelyhavebeguntoextendthatforecastbydecadesifnotcenturies.Whattheyfound,inattemptingtomodelthought,isthatthehumanroughlyonehundredbillionnervecellsaremuchmoretalented-andhumanperceptionfarmorecomplicated-thanpreviouslyimagined.Theyhavebuiltrobotsthatcanrecognizetheerrorofamachinepanelbyafractionofamillimeterinacontrolledfactoryenvironment.Butthehumanmindcanglimpsearapidlychangingsceneandimmediatelydisregardthe98percentthatisirrelevant,instantaneouslyfocusingonthemonkeyatthesideofawindingforestroadorthesinglesuspiciousfaceinabigcrowd.ThemostadvancedcomputersystemsonEarthcan'tapproachthatkindofability,andneuroscientistsstilldon'tknowquitehowwedoit.

单选题 {{I}} Questions 1446 are bused on the following dialogue. You now have 15 seconds to read Questions 14--16.{{/I}}

单选题Which of the following is made by craft production?

单选题In the past decade, new scientific developments in communications have changed the way many people gather information about politics. The most important of these new (21) is the Internet. Recent research suggests the use of the Internet for political information increases the (22) of participation. While a(n) (23) relationship between Internet news and political participation has been found, a theoretical link as to why the Internet is (24) from other media forms is largely (25) This research is an attempt to (26) the "black-box" linking the Internet and political participation by building on two theoretical (27) The first, surge and decline theory, comes out of political science and the second, media systems dependency theory, (28) from communications. Both explanations focus on individual costs and benefits of political participation. The media can (29) the "costs" by providing sufficient information to make (30) decisions about voting. Previous research (31) that the Internet benefits the public through the cost side of the equation. One of the media's greatest (32) is information and the public (33) on media to provide them with the information they need. (34) the Internet is capable of providing information (35) , and from a multitude of sources, one would expect it to (36) . political action through lowering the cost of information. Besides lowering participation costs, the media can (37) increase the benefits of participation. Intense media (38) of an event such as an election can (39) excitement that increases the perceived "benefit" of participating. The Internet may encourage a unique participation benefit (40) increased mobilization efforts.