单选题Seawater near the Fukushima plant is showing {{U}}elevated{{/U}} levels of radioactivity in Japan. A. stabilized B. reduced C. increased D. saturated

单选题Since 2004, some 60 million visitors to the U.S. have had their two index fingerprints recorded by an ______ scanner. A. opposite B. organic C. occasional D. optical

单选题Passage Five Never before has flying been so controversial. In the space of two years, the environmental damage done by planes has gone from being something quietly discussed by scientists and committed environmentalists, to a headline-grabbing issue no one can ignore. Even those who fly once or twice a year on holiday can't help but feel a growing sense of guilt, while those opting for trips by car, train or ferry have a self-righteous spring in their steps. Now, however, the backlash is beginning. The tourism and aviation industries are mobilising, and pointing out some awkward facts. Did you know that some ferries emit far more carbon dioxide than some planes? That driving can release twice as much carbon as flying? A new report from Balpa, the pilot's union, even claims that planes can be better than train. While there are the campaigners who plot their camp at Heathrow to protest the air travel, in Kenya plans are being drawn up for a very different camp. Looking out from a cliff over the deserts of Samburuland is a stunning hotel, the Ol Malo Eco-Lodge. Revenue from the small number of visiting tourists has allowed the 5,000 acres around it to be transformed from over-grazed cattle ranch to a conservation site. More impressive still is the Ol Malo eye project. Up to 80 percent of adults in the area suffer sight loss, so the Ol Malo Trust runs regular surgical camps, bringing doctors from the UK to treat them. In January, the camp gave 102 people back their sight. "It's very simple-all of our visitors fly here," said Julia Francombe, the founder. "If they stopped coming, it would kill us." One thing on which all sides agree is that aviation is booming, so it becomes crucial to develop new and less polluting aircraft. Airbus's claim that it can save the world with the A380 may be far-fetched, but its "gentle giant" plane is far more efficient and quieter than those of 20 years ago. Some environmentalists, however, scorn these advances, saying such measures are a "delusion." "The aviation industry is likely to vastly overstate the gains that can be made from technological improvements but sadly a climate friendly plane isn't on the horizon," says Emily Armistead of Greenpeace. So the question is: who do you believe?

单选题The manager is seeking some cost-effective methods that can call forth their initiative. A. efficient B. conventional C. economical D. unique.

单选题The country once threatened to ______ diplomatic relations with its neighbor if the latter was too friendly to the rebels. A. show off B. keep off C. break off D. call off

单选题Reading extensively can broaden our vision and extend our life into a new______. A. perspective B. hierarchy C. layer D. dimension

单选题With the pace of change quickening, more and more scientists find it hard to keep up with the latest developments even in their own ______. A. disciplines B. institutes C. perspective D. horizon

单选题The patient's unusual symptoms {{U}}confounded{{/U}} even the most experienced doctor of the hospital. A. confused B. hit C. stimulated D. confronted

单选题There used to be many guys who {{U}}asserted{{/U}} themselves as all-powerful Chi Kung masters in China. A. conformed B. confirmed C. affirmed D. performed

单选题 "A robot can't replace me," Andy Richter complained loudly but in good fun, facing the prospect of losing his job to the Jeopardy!-winning IBM's Watson computer. "A robot can't do the things a human can do. I mean, can he love, can he feel?" Well, no. But some folks are asking similar questions about computers such as Watson taking their jobs someday. "After all, if a machine can beat humans at Jeopardy!, will computers soon be competing with people for knowledge-based jobs?" asks Martin Ford, author of The Lights in the Tunnel in a Fortune magazine article. "If IBM's hopes for the technology are realized, workers may, in fact, have cause for concern." Ford and others argue that computers and robots such as Watson have the potential to replace not only assembly-line jobs, such as the manufacturing positions that dropped nationwide by one-third over the last decade, but the "knowledge worker" jobs of the modern economy, such as radiologists and lawyers. "Many of these people will be highly educated professionals who had previously assumed that they were, because of their skills and advanced educations, beneficiaries of the trend toward an increasingly technological and globalized world," Ford argues in his book. But Cornell University sociologist Trevor Pinch says that warnings about artificial intelligence taking over have missed essential shortcomings of computers for decades. "I would call them friendly monsters," he says, rather than job-killing ones. "Computers can never experience the things that make us uniquely human, they have never been delayed at O'Hare airport long enough to walk around the memorial to Gen. O'Hare, and have that memory stuck in your brain." Underneath the exaggerated publicity, the human brain far outperforms computers, and not just in raw calculating power, says information scholar Martin Hilbert of the University of Southern California in Los Angeles. All of the computers in the world taken together possess the computational power of, in all, 62 human brains, he says, based on findings his team reported this month in Science. There are about six billion people alive today. And hey, if things turn out as bad as Ford suggests, there is always the solution that Andy Richter settled on—beating anything that resembles the job-threatening Watson with a baseball bat. Let's hope it doesn't come down to that.

单选题Being critical and dictatorial, the boss would ______ discussions and ignore comments not in agreement with his.

单选题 President Bill Clinton is being squeezed on the issue of gays in the military. Gays demand that he lift the ban on them. But the generals and admirals say, please, spare us this massive migraine. If Clinton wants maximum effectiveness from the military, he'll try to squirm out of his political promise to end the ban. He can't soothe both sides on this issue. If he keeps his word, he'll anger the military and a large segment of America. If he breaks his promise, he'll anger gays and their Hollywood supporters, who gave him votes and money last year. Were I asked to cast a tie-breaking vote; it would be for the military. They know more about what it takes to win wars than Barbra. Streisand or the Gay and Lesbian Alliance. And if the Pentagon had done a better job of arguing its case, the vast majority of Americans would agree. Instead, gays have skillfully used the media to argue that the military ban is nothing more than discrimination. Those who disagree are called gay-bashers. "We're caught in a propaganda war being waged by the media and gay lobbyists," Lt. Col. Robert Maginnis recently wrote," Most media members who advocate lifting the ban never served in the military. They don't understand the lack of privacy and forced intimacy in the barracks." He's right. Military life is unique. The civilian job closest to soldiering is being a cop. There are gay cops, and that's okay. But as a cop, you work your shift and go home. You don't live on a ship with another cop 24 hours a day. You don't shower and sleep near him for months at a time. And since we're talking about sex-specifically a form of sex that most Americans consider morally wrong-anybody who says that it won't affect morale and discipline in the military has never been in a barracks or on a crowded troopship. Yes, there are polls that tell us that more than 40 percent of Americans think the gay ban should be lifted. These polls are about as meaningful as those that say ten percent of Americans believe Elvis lives. A poll limited to those in the military and those who have served would show that an overwhelming majority would be against lifting the ban. They know that most who volunteer to serve in our military have conservative, middle-class, God-country-family values. It's conformist organization from haircut to stockings. And it places less value on individual rights than on the unit as a whole. It has its own laws and justice system, which by civilian standards would be considered authoritarian. Maybe you don't want to live that way, but if we are going to fight wars, it works. If gays are accepted by the military, they will demand change. Some activists will probably push for a gay quota at West Point. There's nothing wrong with change if it has a positive purpose. This doesn't. We're not talking about patriotism, love of country, sacrifice. Gay obsessive-not to be confused with ordinary people who happen to be gay-have an agenda: total social acceptance. And they are using the military ban as a blue chip in their poker game. A gay Washington lawyer summed it up when he told the New York Times: "Any instruments that defer or delegate this issue to the military are inherently suspect." Hey, lawyer, this country's military has won many more battles than it has lost. When it comes to fighting, Gen. Colin Powell's views are less suspect than those of a Washington lawyer who hasn't spent one minute in combat. From ousting Saddam from Kuwait to helping Somalia, our military has been effective. As the saying goes, if it isn't broke, don't fix it.

单选题The old lady was shocked to severe illness by the {{U}}poignant{{/U}} news. A. wicked B. sorrowful C. surprising D. frightening

单选题The young man told me a convincing story, but it seemed that he {{U}}concealed{{/U}} his true motives. A. put up B. took up C. picked up D. covered up

单选题WhatwasMichaelGeisenbeforebeingascienceteacher?A.Ascientist.B.Aforester.C.Aschoolmaster.D.Afarmer.

单选题Schools are advised to work together with parents to address the issue of addiction to computer games. A. speak to B. deal with C. take down D. go for

单选题The visit of Japanese Prime Minister Shinzo Abe to the Yasukuni shrine {{U}}outraged{{/U}} China and South Korea. A. angered B. condoled C. bewildered D. imposed

单选题If those "mad moments"-- when you can't recall what your friend has told you or where you left your keys--are becoming more frequent, mental exercises and a healthy brain diet may help. Just as bodies require more maintenance with the passing years, so do brains, which scientists now know- show signs of aging as early as the 20s and 30s. "'Brain aging starts at a very young age, younger than any of us have imagined and these processes continue gradually over the years," said Dr. Gary Small, the director of the Center on Aging at the University of California, Los Angeles. "I'm convinced that it is never too early to get started on a mental or brain-fitness program," he added. In his book, "The Memory Bible," the 51-year-old neuroscientist lists what he refers to as the 10 commandments for keeping the brain young. They include training memory, building skills, minimizing stress, mental exercises, brain food and a healthy lifestyle. It's a game plan for keeping brain Cells sparking and neural networks in tip-top shape. "Misplacing your keys a couple of times doesn't mean you should start labeling your cabinets. Memory loss is not an inevitable consequence of aging. Our brains can fight back," he said. Small provides the weapons for a full-scale attack. According to him, simple memory tests give an indication of what you are up against and tools such as look, snap and connect are designed to make sure that important things such as names and dates are never forgotten. "So if you want to learn names and faces, for example, you meet Mrs. Beatty and you notice a distinguishing facial feature, maybe a prominent eyebrow," said Small. "You associate the first thing that comes to mind. I think of the actor Warren Beatty so I create a mental snapshot of Warren Beatty kissing her brow." Small admits it may sound a bit strange but he says it works. "Mental exercises could be anything from doing crossword puzzles and writing with your left hand if you are right handed or learning a language. It could be anything that is fun that people enjoy doing", he added. He also recommends physical exercise, a low-fat diet and eating foods rich in omega-3 fatty acids, such as fish, walnuts and Brazil nuts, and fruits and vegetables high in antioxidants (抗氧化剂) including blueberries and onions in addition to reducing stress.

单选题He preferred to write the letter by hand______. A. to typing it B. than type it C. to type it D. rather than type it

单选题Passage One From the goose that laid the golden egg to the race between the tortoise and the hare, Aesop's fables are known for teaching moral lessons rather than literally being true. But a new study says at least one such tale might really have happened. It's the fable about a thirsty crow. The bird comes across a jar with the water level too low for him to reach. The crow raises the water level by dropping stones into the jar. The moral tells: Little by little does the trick, or in other retellings, necessity is the mother of invention. Now, scientists report that some relatives of crows called rooks used the same stone-dropping strategy to get at a floating worm. Results of experiments with three birds were published online by the journal Current Biology. Rooks, like crows, had already been shown to use tools in previous experiments. Christopher Bird of Cambridge University and a colleague exposed the rooks to a 6-inch-tall clear plastic tube containing water, with a worm on its surface. The birds used the stone-dropping trick spontaneously and appeared to estimate how many stones they would need. They learned quickly that larger stones work better. In an accompanying commentary, Alex Taylor and Russell Gray of the University of Auckland in New Zealand noted that in an earlier experiment, the same birds had dropped a single stone into a tube to get food released at the bottom. So maybe they were just following that strategy again when they saw the tube in the new experiment, the scientists suggested. But Bird's paper argued there's more to it: The rooks dropped multiple stones rather than just one before reaching for the worm, and they reached for it at the top of the tube rather than trying to reach the food at the bottom. The researchers also said Aesop's crow might have actually been a rook, since both kinds of birds were called crows in the past.