单选题The following terms were put forward by Ferdinand de Secure EXCEPT [A] systemic and functional. [B] signifier and signified. [C] langue and parole. [D] synchronic and diachronic.

单选题On the heels of its recent decision to criminalize consumers who rip songs from albums they have purchased to their computers (or iPods), the Recording Industry Association of America (RIAA) has now gone one step further and declared that "remembering songs" using your brain is criminal copyright infringement. "The brain is a recording device," explained RIAA president Cary Sherman. "The act of listening is an unauthorized act of copying music to that recording device, and the act of recalling or remembering a song is unauthorized playback." The RIAA also said it would begin sending letters to tens of millions of consumers thought to be illegally remembering songs, threatening them with lawsuits if they do not settle with the RIAA by paying monetary damages. In order to avoid engaging in unauthorized copyright infringement, consumers will now be required to immediately forget everything they have just heard—a skill already mastered by the former US President George Bush. To aid in these memory wiping efforts, the RIAA is teaming up with Big Pharma to include free psychotropic prescription drugs with the purchase of new music albums. Consumers are advised to swallow the pills before listening to the music. The pills block normal cognitive function, allowing consumers to enjoy the music in a more detached state without the risk of accidentally remembering any songs (and thereby violating copyright law). Consumers caught humming their favorite songs will be charged with a more serious crime: The public performance of a copyrighted song, for which the fines can reach over $250,000 per incident. "Humming, singing and whistling songs will not be tolerated," said Sherman. Consumers attempting to circumvent the RIAA"s new memory-wiping technology by actually remembering songs will be charged with felony crimes under provisions of the Digital Millennium Copyright Act. The Act, passed in 1998, makes it a felony crime to circumvent copyright protection technologies. The RIAA"s position is that consumers who actually use their brains while listening to music are violating the DMCA. With this decision, the RIAA now considers approximately 72% of the adult U.S. population to be criminals. Putting them all in prison for copyright infringement would cost US taxpayers an estimated $683 billion per year—an amount that would have to be shouldered by the remaining 28% who are not imprisoned. The RIAA believes it could cover the $683 billion tab through royalties on music sales. The problem with that—the 28% remaining adults not in prison do not buy music albums. That means album sales would plummet to nearly zero, and the US government (which is already deep in debt) would have to borrow money to pay for all the prisons. When asked whether he really wants 72% of the US population to be imprisoned for ripping music CDs to their own brains, Sherman shot back, "You don"t support criminal behavior, do you? Every person who illegally remembers a song is a criminal. We can"t have criminals running free on the streets of America. It"s an issue of national security."

单选题Few writers are as revered as Jane Austen. According to a poll in March, Pride and Prejudice—a romance without a single kiss—is the book Britons love most. Austen adaptations abound: the BBC is filming a new version of Sense and Sensibility written by Andrew Davies, whose 1995 Pride and Prejudice was a global success, and ITV has just shown three of her other five novels. But Janeites, as the author"s most avid devotees style themselves, have few relics to worship. Most of her letters were burned on her death, and a single sketch by her sister, Cassandra, showing her purse-lipped and in her night-cap, is the only generally acknowledged image of her face. That picture, now hanging in the National Portrait Gallery in London, depicts a woman so plain that it is often reworked for book covers. That is perhaps why there has been so much interest in a portrait by Ozias Humphrey, a minor society artist of the 18th century, which was auctioned in New York on April 19th by Christie"s. According to its owner, Henry Rice, a sixth-generation descendant of Miss Austen"s brother Edward, it shows Jane at about 14, and was commissioned by a great-uncle to help her marriage prospects. Not everyone is convinced that the picture is in fact of Miss Austen. The National Portrait Gallery has repeatedly declined to purchase it, citing supposed anachronisms in the subject"s costume and a tax stamp on the canvas. Its pre-auction valuation reflected this uncertainty: although $400,000-800,000 is far more than any of Mr. Humphrey"s works has achieved before now, a buyer who believed he was looking at Miss Austen would surely be prepared to pay more. The doubts expressed in London are one reason why the portrait was sold in New York. Another is that Americans are as keen on Miss Austen as Britons are. The BBC"s Pride and Prejudice was co-produced by A&E, an American cable channel, and another such channel, HBO, co-financed ITV"s adaptations. Versions of her books for the big screen have relied on American cash and not a few American actors. At the heart of each of the novels is a heroine—and a marriage. But unlike her heroines, Miss Austen remained single, and some wonder whether that sour-faced sketch by her sister tells us why. Becoming Jane , a recent Hollywood production, presents a different, highly speculative, explanation: a beautiful girl has her heart broken by a flighty Irishman and turns to writing for solace. Miss Austen herself rated her heroines" other attributes more highly than their looks, on which she rarely spends more than a few unspecific words. The rest are devoted to what these women think and say, which is also what matters most about Jane Austen.

单选题The government levies different kinds of taxes so that

单选题 Questions 17～20 are based on the following talk.

单选题Questions 18—20 are based on the following talk.

单选题When doctors need information about what dose of medication to prescribe, they usually consult a fat navy-blue book called The Physicians" Desk Reference, or PDR, an extensive compilation of data about drugs form their manufacturers. But the doses recommended in the PDR may be too high for many people and may cause adverse reactions, ranging from dizziness and nausea all the way to death, according to an article published last month in the journal Postgraduate Medicine. For many drugs — including Viagra, Prozac and some medicines used to treat high blood pressure, allergies, insomnia and high cholesterol — smaller doses would work just as well, with far less risk of bad reactions, said Jay Cohen, the author of the article. "Side effects drive a lot of people out of treatment that they need," Dr. Cohen said, noting that people with chronic conditions like high blood pressure, headaches and depression often gave up trying to treat their illnesses when they found that the cure was worse than the disease. But if doctors were to individualize dosages for each patient, more people might take their medicine. Dr. Cohen said he became aware of the problem because he encountered many patients who suffered from side effects even though they had taken what were supposedly the correct doses of medicine. When Dr. Cohen consulted medical journals and textbooks, he discovered studies showing that many patients were helped by smaller than usual amounts of medication. And many of his own patients did better with reduced doses of medicine. He said his findings helped explain a study published last year by other researchers, who reported that drug reactions in hospitals were among the nation" s leading causes of death, killing more than 100,000 Americans a year. The deaths that the team studied were not due to medication errors by doctors or patients; they occurred in people taking doses thought to be correct. Dosing guidelines generally tend to be too high because they are based on studies conducted in limited numbers of patients by drug companies when they are seeking approval for new products. For those studies to run efficiently, doses need to be high enough to show as quickly as possible that the drug works. But later, after the drug is approved, far more people take it, sometimes along with other drugs, and individual differences begin to show up. Yet, that information does not always make it into the PDR and it is not well taught in medical school, Cohen said. Dr. Cohen cautioned that patients should not begin tinkering with doses pf prescription drugs on their own. He said they needed to work with doctors to adjust the doses safely. With some drugs, doses cannot be changed. And in emergencies, he said, it is always safest to stick with recommended doses.

单选题Ours is a world in which no individual, and no country, exits in isolation. All of us live simultaneously in our own communities and in the world at large. The same icons, whether on a movie screen or computer screen, are recognizable from Berlin to Bangalore. We are all influenced by the same tides of political, social and technological change. Pollution, organized crime and the proliferation of deadly weapons likewise show little regard for the niceties of borders; they are "problems without passports". We are connected, wired, interdependent. Much of this is nothing new—human beings have interacted across the planet for centuries. But today's "globalization" is different. It is happening more rapidly. And it is governed by different rules or, in some cases, by no rules at all. Globalization is bringing us new choices and opportunities. It is making us more familiar with global diversity. Yet, millions of people experience it not as an agent of progress, but as a disruptive force that can destroy lives, jobs and traditions. Faced with the potential good of globalization as well as its risks, faced with the persistence of deadly conflicts in which civilians are the primary targets, faced with the pervasiveness of poverty and injustice, we must be able to identify the areas where collective action is needed to safeguard global interests. Local communities have their fire departments and town councils. Nations have their courts and legislatures. But in today's globalized world, the mechanisms available for global action are hardly more than embryonic. It is high time we gave more concrete meaning to the idea of the "international community". What makes a community? What binds it together? For some it is faith. For others it is the defense of an idea, such as democracy. Some communities are homogeneous, others multicultural. Some are as small as schools and villages; others as large as continents. Specifically, what binds us into an international community? In the broadest sense there is a shared vision of a better world for all people, as set out, for example, in the founding Charter of the United Nations. There is our sense of common vulnerability in the face of global warming and the spread of weapons of mass destruction. There is the framework of international law, treaties and human-rights conventions. There is equally our sense of shared opportunity, which is why we build common markets and joint institutions such as the United Nations. Together, we are stronger.

单选题Science has long had an uneasy relationship with other aspects of culture. Think of Galileo's 17th century trial for his rebelling belief before the Catholic Church or poet William Blake's harsh remarks against the mechanistic worldview of Isaac Newton. The schism between science and the humanities has, if anything, deepened in this century. Until recently, the scientific community was so powerful that it could afford to ignore its critics—but no longer. As funding for science has declined, scientists have attacked "antiscience" in several books, notably Higher Superstition, by Paul R. Gross, a biologist at the University of Virginia, and Norman Levitt, a mathematician at Rutgers University; and The Demon-Haunted World, by Carl Sagan of Cornell University. Defenders of science have also voiced their concerns at meetings such as "the Flight from Science and Reason", held in New York City in 1995, and "Science in the Age of (Mis) information", which assembled last June near Buffalo. Antiscience clearly means different things to different people. Gross and Levitt find fault primarily with sociologists, philosophers and other academics who have questioned science's objectivity. Sagan is more concerned with those who believe in ghosts, creationism and other phenomena that contradict the scientific worldview. A survey of news stories in 1996 reveals that the antiscience tag has been attached to many other groups as well, from authorities who advocated the elimination of the last remaining stocks of smallpox virus to Republicans who advocated decreased funding for basic research. Few would dispute that the term applies to the Unabomber, whose manifesto, published in 1995, scorns science and longs for return to a pre-technological utopia. But surely that does not mean environmentalists concerned about uncontrolled industrial growth are antiscience, as an essay in US News & World Report last May seemed to suggest. The environmentalists, inevitably, respond to such critics. The true enemies of science, argues Paul Ehrlich of Stanford University, a pioneer of environmental studies, are those who question the evidence supporting global warming, the depletion of the ozone layer and other consequences of industrial growth. Indeed, some observers fear that the antiscience epithet is in danger of becoming meaningless. "The term 'anti-science' can lump together too many, quite different things," notes Harvard University philosopher Gerald Holton in his 1993 work Science and Antiscience. "They have in common only one thing that they tend to annoy or threaten those who regard themselves as more enlightened. /

单选题 In face of the numbers of people who are suffering anxiety attacks over AIDS, global warming, ozone sharp decline, and the proliferation of chemical weapons, you have a disturbingly large population easily influenced by the madness aroused with the arrival of the period of the second thousand years. Even supposedly sober observers are taking positions in the millenarian parade. Novelist, poet, and science writer Brad Leithauser is convinced the second millennium is going to bring a "psychological shift" that will "literally redefine what it means to be a human being." Leithauser believes that global weather patterns will undergo random, even chaotic, changes produced by the dreaded greenhouse effect. In his novel Hence set around 2000, Leithauser visualizes religious leaders seizing on the resultant disturbances -flooded cities, soaring cancer rates, and what have you -and taking them as a sign that the end is near. At the same time, Leithauser thinks, a combination of high-speed living and runaway technology will serve further to alienate people from themselves. He predicts that invasive media will bring an inescapable large number of stimuli. In this atmosphere of "evershortening collective memory," books will become pass. Indeed, any form of reflective solitude will become "quietly sinful," says a character in Leithauser's novel, and seeking it out will require "almost an act of social defiance." Economic expert Ravi Bartra is equally convinced that by the dawn of the second millennium people will have undergone a thorough spiritual and economic transformation. He warns that the voices of the rich will soon superheat the global economy to the point of explosion and collapse, in the wake of which "society will border on chaos. There will be a polarization of society into two classes -the haves and the have-nots -and there will be a lot of crime and street demonstrations" as the angry have-nots make strong claim for food, shelter, and social justice. But Batra, unlike Leithauser, sees the coming bimillennial breakdown as a sort of getting rid of sin by fire on the way to a better world. From the ashes of economic and social collapse, he says, will rise a "higher consciousness"--a climate in which pornography, selfishness, and extreme concentration of wealth are reproached and society becomes "more concerned with the handicapped and the weaker." On the job, he foresees "far more democratic large factories, where employees not only sit on boards of directors but actually run companies." Meanwhile, discipline will capture the home-and-family front, with "children obeying their parents more, and more family stability, fewer divorces."

单选题Despite improvements in state and local monitoring, America's beaches remain threatened by pollution and too many are not tested for water quality, according to a report today by an environmental organization. In its ninth annual "Testing the Waters" survey of vacation beaches, the Natural Resources Defense Council reported a record number of beach closings and swimming advisories in 1998. Many of those were due to pollution stirred up by storms that hit southern California last year caused by the phenomenon known as El Nino. One positive reason for the large number of closings, the group reported, is better monitoring of water quality by state and local beach authorities. The report praises Myrtle Beach, S.C., and the state of Georgia derided as "beach bums" in previous annual reports for enacting new monitoring and public notification programs. But Alabama, Louisiana, Oregon and Washington still lack any regular monitoring of beach water for swimmer safety, while Mississippi, Texas and Puerto Rico test beaches but have no public notification programs, according to the report. "We are issuing this report ... as a reminder of how unchecked pollution continues to lower our quality of life and threaten public health," the NRDC wrote. "We hope this will provide an incentive for Congress, the Environmental Protection Agency, states and localities to improve controls over the sources of coastal, pollution and to close the gaps in monitoring and public notification along our coasts." The annual report has been criticized for not recognizing distinctions among states with beaches. State officials in Washington, for instance, have pointed out that their beaches are used far less for swimming and surfing than beaches in states like Florida, New Jersey and California. The NRDC says nine states -Connecticut, Delaware, Illinois, Indiana, New Hampshire, New Jersey, North Carolina, Ohio and Pennsylvania -"comprehensively monitor most or all of their beaches and notify the public when health hazards exist". The NRDC reported there were at least 7,236 days of closings and advisories in 1998 at ocean, bay, Great Lakes and freshwater beaches around the nation. There also were 41 extended closings and advisories lasting six to 12 weeks, and 36 that lasted more than 12 weeks. Most of the beach closings and advisories were the result of tests that showed unhealthy levels of bacteria in the water, usually caused by sewage or stormwater discharges. About a quarter of the closings were caused by a specific pollution event.

单选题Which of the following is NOT true about the WTO?

单选题{{B}}Text 1{{/B}} Today TV audiences all over the world axe accustomed to the sight of American astronauts in tip-top condition, with fair hair, crew-cuts, good teeth, an uncomplicated sense of humour and a severely limited non-technical vocabulary. What marks out an astronaut from his earthbound fellow human beings is something of a difficult problem. Should you wish to interview him, you must apply beforehand, and you must be prepared for a longish wait, even if your application meets with success. It is, in any case, out of the question to interview an astronaut about his family life or personal activities, because all the astronauts have contracts with an American magazine under conditions forbidding any unauthorized disclosures about their private lives. Certain obvious qualities are needed. Any would be spaceman must be in perfect health, must have powers of concentration (since work inside a spacecraft is exceptionally demanding) and must have considerable courage. Again, space-work calls for dedication. Courage and dedication are particularly essential. In the well-known case of the Challenger seven crew members lost their lives in space because of the faulty equipment in the shuttle. Another must is outstanding scientific expertise. It goes without saying that they all have to have professional aeronautical qualifications and experience. A striking feature of the astronauts is their ages. For the younger man, in his twenties, say, space is out. Only one of the fifty men working for NASA in 1970 was under 30. The oldest astronaut to date is Alan Shepard, America's first man in space, who, at nearly fifty, was also the man who captained Apollo 13. The average age is the late thirties. The crew members of Apollo 11 were all born well before the Second World War. In 1986 the Challenger astronauts had an average age of 39. The range was from 35 to 46. In a society where marital continuity is not always exhibited, the astronauts' record in this respect hits you in the eye. Of all the married men in NASA group, only two or three are divorced from their wives. Mind you, it is hard to tell whether something in the basic character of an astronaut encourages fidelity or whether the selection process demands that a candidate should be happily married. The NASA astronauts live in unattractive small communities dotted hero and there around the base in Texas. You would expect them to find their friends from among their professional associates, but this is not the case. Rather, they prefer to make friends with the normal folk in their districts. A good job, too, Astronauts, like everybody else, must get fed up with talking shop all the time, and, whereas they are indeed an elite, their daily life outside work should be as normal as possible, if only for the sake of their families. As for the astronauts' political leanings, they seam to be towards the right. This may be due to the fact that a large proportion of the astronauts have a military background. On the other hand, it could be just coincidence.

单选题 {{I}} Questions 14 to 16 are based on a passage on plastic tax. You now have 15 seconds to read Questions 14 to 16.{{/I}}

单选题The making of classifications by literary historians can be a somewhat risky enterprise. When Black poets are discussed separately as a group, for instance, the extent to which their work reflects the development of poetry in general should not be forgotten, or a distortion of literary history may result. This caution is particularly relevant in an assessment of the differences between Black poets at the turn of the century (1900—1909) and those of the generation of the 1920's. These differences include the bolder and more forthright speech of the later generation and its technical inventiveness. It should be remembered, though, that comparable differences also existed for similar generations of White poets. When poets of the 1910's and 1920's are considered together, however, the distinctions that literary historians might make between "conservative" and "experimental" would be of little significance in a discussion of Black poets, although these remain helpful classifications for White poets of these decades. Certainly differences can be noted between "conservative" Black poets such as Countee Cullen and Cluade Mckay and "expert mental" ones such as Jean Toomer and Langston Hughes. But Black poets were not battling over old or new styles, rather, one accomplished Black poet was ready to welcome another, whatever his or her style, for what mattered was racial pride. However, in the 1920's Black poets did debate whether they should deal with specifically racial subjects. They asked whether they should only write about Black experience for a Black audience or whether such demands were restrictive. It may be said, though, that virtually all these poets wrote their best poems when they spoke out of racial feeling, race being, as James Weldon Johnson rightly put it, "perform the thing the Negro poet knows best". At the turn of the century, by contrast, most Black poets generally wrote in the conventional manner of the age and expressed noble, if vague, emotions in their poetry. These poets were not unusually gifted, though Roscoe Jamison and G. M. McClellen may be mentioned as exceptions. They chose not to write in dialect, which, as Sterling Brown has suggested, "meant a rejection of stereotypes of Negro life", and they refused to write only about racial subjects. This refusal had both a positive and a negative consequence. As Brown observes, "Valuably insisting that Negro poets should not be confined to issues of race, these poets committed an error... they refused to look into their hearts and write. " These are important insights, but one must stress that this refusal to look within was also typical of most White poets of the United States at the time. They, too, often turned from their own experience and consequently produced not very memorable poems about vague topics, such as the peace of nature.

单选题Interest is steadily spreading from a minority of enthusiasts in developing renewable sources of energy--wind, wave and solar power, tidal and geothermal energy. Additional support for them has come with a proposal to explore the untapped sources of hydro-electric power in Scotland. The details are provided by Mr. William Manser in a study provided for an expert committee to look at the developments possible for hydro-electric sites and, more important, for means of financing them. There is a clear industrial connection in Mr. Manser's study because it was done for the Federation of Civil Engineering Contractors; hydro-electric schemes, by definition, have a large civil engineering component in them. Mr. Manser estimates that wind power could theoretically provide more than 7 percent of electricity supply in the United Kingdom, provided suitable sites for generators could be found. However, the practical viability of wind power generation is not likely to be understood until 1990. Other developments using renewable energy sources are also at an early stage as far as their commercial possibilities are concerned, he believe. The best developed and most suitable form of renewable energy is, in his view, hydro power. The technology has been developed over centuries and is still progressing. At present it is the cheapest form of electricity generation. Mr. Manser studied past surveys of the north of Scotland and identified several as suitable for hydro-electric generation. Those are in the remote areas, usually of great natural beauty. But Mr. Manser says a well-designed dam can be impressive in itself. It is also possible to make installation as unobtrusive as possible, to the point of burying parts of them. Hydro generation involves no water pollution, smoke creation or unsightly stocking-out yards. The main trouble, which appears from his report, is financing an undertaking which has a heavy initial capital cost, and very low running costs. However, Mr. Manser does not see that as an unfamiliar position for the electricity industry. He cites the proposed construction of the new nuclear power station at Sizewell in Suffolk, which will have a high initial capital cost. The argument at Sizewell that the reason for the expenditure is that the capital will provide a benefit in lower costs and higher returns in the long-term, applies equally to hydro-electric generation.

单选题When he died in 1885 at the age of 83, Victor Hugo was beyond question the most famous man of letters in France, and perhaps the world -his only rival being Charles Dickens. The English put up memorials to show where their literary celebrities lived or were born, and sometimes grant them burial in Westminster Abbey. Hugo, however, is the only writer to have stone to mark his place of conception. His parents' epochal embrace took place in a forest 3,000 feet up on Mount Donon, overlooking the Rhineland, in May 1801, though it's typical Of Hugo's own overstating habit that in adult life he claimed it happened 3,000 feet higher still, and on Mount Blanc. In his life he was compared to (often by himself) an eagle, a titan, a monster; to Homer, Shakespeare, Dante and Cervantes. He wrote enormous, turbulent, dark novels, two of which (Les Miserable and The Hunchback of Notre Dame) in our own day have been turned, respectively, into a musical and a Disney film. Few read the originals, at least in English, though they are of course more disturbing and entertaining than their modern imitations. He wrote 21 plays, which transformed the French Theater, raising it out of the noble lifelessness of Corneille and Racine. One of them Hernani, was the symbolic starting point of the Romantic movement in France and is sometimes credited with helping provoke the 1830 Revolution. With his poetry reckoned in, Hugo's effect on French literature exceeded anything short of the Bible itself. Flaubert and other French writers all stood in his shadow, along with foreigners like Dostoyevsky and Conrad. In the words of English scholar Graham Robb, whose brilliant new biography, Victor Hugo, does for this sublime windbag what George Painter did for Proust 30 years ago, Hugo was "a oneman education system through which every writer had to pass...The story of Hugo's influence after all is the story of a river after it reaches the sea. It was so pervasive that he was sometimes thought not to have had an influence at all." At the peak of his fame several streets in Paris were named after him. Larger than life, he was almost larger than death: half a million people, the biggest funeral attendance since the death of Napoleon, followed his coffin to the freshly deconsecrated Pantheon. "Victor Hugo was a madman who thought he was Victor Hugo," so went a comment several decades later.

单选题Although recent years have seen substantial reductions in noxious pollutants from individual motor vehicles, the number of such vehicles has been steadily increasing. Consequently, more than 100 cities in the United States still have levels of carbon monoxide, particulate matter, and ozone (generated by photochemical reactions with hydrocarbons from vehicle exhaust) that exceed legally established limits. There is a growing realization that the only effective way to achieve further reduction in vehicle emissions — short of a massive shift away from the private automobile — is to replace conventional diesel fuel and gasoline with cleaner-burning fuels such as compressed natural gas, liquefied petroleum gas, ethanol, or methanol. All of these alternatives are carbon-based fuels whose molecules are smaller and simpler than those of gasoline. These molecules burn more cleanly than gasoline, in part because they have fewer, if any, carbon-carbon bonds and the hydrocarbons they do emit are less likely to generate ozone. The combustion of larger molecules, which have multiple carbon-carbon bonds, involves a more complex series of reactions. These reactions increase the probability of incomplete combustion and are more likely to release uncombusted and photochemically active hydrocarbon compounds into the atmosphere. On the other hand, alternative fuels do have drawbacks. Compressed natural gas would require that vehicles have a set of heavy fuel tanks — a serious liability in terms of performance and fuel efficiency — and liquefied petroleum gas faces fundamental limits on supply. Ethanol and methanol, on the other hand, have important advantages over other carbon-based alternative fuels: they have a higher energy content per volume and would require minimal changes in the existing network for distributing motor fuel. Ethanol is commonly used as a gasoline supplement, but it is currently about twice as expensive as methanol, the low cost of which is one of its attractive features. Methanol's most attractive feature, however, is that it can reduce by about 90 percent the vehicle emissions that form ozone, the most serious urban air pollutant. Like any alternative fuel, methanol has its critics. Yet much of the criticism is based on the use of "gasoline clone" vehicles that do not incorporate even the simplest design improvements that are made possible with the use of methanol. It is true, for example, that a given volume of methanol provides only about one half of the energy that gasoline and diesel fuels do; other things being equal, the fuel tank would have to be somewhat larger and heavier. However, since methanol-fueled vehicles could be designed to be much more efficient than "gasoline clone" vehicles fueled with methanol, they would need comparatively less fuel. Vehicles incorporating only the simplest of the engine improvements that methanol makes feasible would still contribute to an immediate lessening of urban air pollution,

单选题

单选题To audience, the typical American astronaut