单选题The park gave the whale to the Foundation and big contributions came from all parts of the world. A. dominations B. denotation C. donations D. signatures

单选题{{B}}第三篇{{/B}} {{B}}A Phone that Knows You're Busy{{/B}} It's a modem conundrum: you're too busy to be disturbed by incessant phone calls so you mm your cell phone off. But if you don't remember to turn it back on when you're less busy, you could miss some important calls. If only the phone knew when it was wise to interrupt you, you wouldn't have to turn it off at all. Instead, it could let calls through during spells of relative inactivity. A bunch of behavior sensors and a clever piece of software could do just that, by analyzing your behavior to determine if it's a good time to interrupt you. If built into a phone, the system may decide you're too busy and ask the caller to leave a message or ring back later. In a desktop computer, the system could stop instant messages or spain annoying you when you're busy. James Fogarty and Scott Hudson at Camegie Mellon University in Pennsylvania based their system on tiny microphones, cameras and touch sensors that reveal body language and activity. First they had to study different behaviors to find out which ones strongly predict whether your mind is interrupted. The potential "busyness" signals they focused on included whether the office doors were left open or closed, the time of day, if other people were with the person in question, how close they were to each other, and whether or not the computer was in use. The sensors monitored these and many other factors while four subjects were at work. At random intervals, the subjects rated how in term ptible they were on a scale ranging from "highly interruptible" to "highly not—term ptible". Their ratings were then correlated with the various behaviors. "It is a shotgun approach: we used all the indicators we could think of and then let statistics ferret out which were important," says Hudson. The model showed that using the keyboard, and talking on a landline or to someone else in the office correlated most strongly with how interruptible the subjects judged themselves to be. Interestingly, the computer was actually better than people at predicting when someone was too busy to be interrupted. The computer got it right 82 per cent of the time, humans 77 percent. Fogarty speculates that this might be because people doing the interrupting are inevitably biased towards delivering their message, whereas computers don't care. The first application for Hudson and Fogarty's system is likely to be in an instant messaging system, followed by office phones and cell phones. "There is no technological roadblock to it being deployed in a couple of years," says Hudson.

单选题The Forbidden Apple New York used to be the city that never sleeps. These days, it"s the city that never smokes, drinks or does anything naughty (at least, not in public). The Big Apple is quickly turning into the Forbidden Apple. If you wanted a glass of wine with your picnic in Central Park, could you have one? No chance. Drinking alcohol in public isn"t allowed. If you decided to feed the birds with the last crumbs (碎屑) of your sandwich, you could be arrested. It"s illegal if you went to a bar for a drink and a cigarette, that would be OK, wouldn"t it? Er... No. You can"t smoke in public in New York City. What"s going on? Why is the city that used to be so open-minded becoming like this? The mayor of New York is behind it all. He has brought in a whole lot of new laws to stop citizens from doing what they want, when they want. The press is shocked. Even the New York police have joined the argument. They recently spent $100,000 on a "Don"t blame the cop" campaign. One New York police officer said, "We raise money for the city by giving people fines for breaking some very stupid laws. It"s all about money." The result is a lot of fines for minor offences. Yoav Kashida, an Israel tourist, fell asleep on the subway. When he woke up, two police officers fined him because he had fallen asleep on two seats (you mustn"t use two seats in the subway). Elle and Serge Schroitman were fined for blocking a driveway with their car. It was their own driveway. The angry editor of Vanity Fair magazine, Graydon Carter, says, "Under New York City law it is acceptable to keep a gun in your place of work, but not an empty ashtray." He should know. The police came to his office and took away his ashtray (烟灰缸). But not all of the New York"s inhabitants are complaining. Marcia Dugatty, 72, said, "The city has changed for the better. If more cities had these laws, America would be a better place to live." Nixon Patricks, 38, a barman, said, "I like the new laws, if people smoked in here, we"d go home smelling of cigarettes." Recent figures show that New York now has fewer crimes per 100,000 people than 193 other US cities. And it"s true—it"s safe, cleaner and more healthy than before. But let"s be honest who goes to New York for its clean streets?

单选题It's in the Cards In recent years, more and more people have been paying for things with credit cards. There are now 565 million credit cards worldwide, but it doesn't stop there. Debit cards (电子记账卡) are being issued by banks, and store cards are being offered by many department stores. Bills and coins are gradually being replaced by "plastic money." In many countries, phone cards have been introduced for people to use in pay phones. In addition, cards made of paper are being replaced by plastic ones by many organizations and clubs. For example, if you belong to a sports club, your membership card may well be made of plastic. How safe is the plastic used to make these cards, though? Until now, most cards have been made from a plastic called PVC. While PVC is being produced, harmful chemicals are released into the atmosphere. One of the most dangerous chemicals that is released is dioxin, which is known to cause cancer in humans. A further problem is that, when a PVC card is thrown away, it is not biodegradable; this means that it does not "break down" and cannot be recycled. Obviously, recycling reduces pollution of the environment. The executive director of the environmental organization and charity Greenpeace, Peter Melchett, says, "If there is a solution to this-and an alternative then it would be madness not to use it." Greenpeace has found a solution and an alternative. Their new credit card is made entirely from a biodegradable plastic that uses plants. The card breaks down in around three months in soil; in this way, it is recycled. In contrast, a PVC card lasts for centuries. Greenpeace hopes that many organizations will soon follow their example and issue cards that do not threaten the public health.

单选题Have you talked to her lately ?

单选题In arithmetic, a number stands for the size of a set of things.

单选题Effects of Environmental Pollution If pollution continues to increase at the present rate, formation of aerosols (浮质) in the atmosphere will cause the onset (开始) of an ice age in about fifty years" time. This conclusion, reached by Dr S. I. Rasool and Dr S. H. Schneider of the United States Goddard Space Flight Centre, answers the apparently conflicting questions of whether an increase in the carbon dioxide (二氧化碳) content of the atmosphere will cause the Earth to warm up or increasing the aerosol content will cause it to cool down. The Americans have shown conclusively that the aerosol question is dominant. Two spectres haunting conservationists have been the prospect that environmental pollution might lead to the planet"s becoming unbearably hot or cold. One of these ghosts has now been laid because it seems that even an increase in the amount of carbon dioxide in the atmosphere to eight times its present value will produce an increase in temperature of only 2℃ which would take place over several thousand years. But the other problem now looms larger than ever. Aerosols are collections of small liquid or solid particles dispersed in air or some other medium. The particles are all so tiny that each is composed of only a few hundred atoms. Because of this they can float in the air for a very long time. Perhaps the most commonly experienced aerosol is industrial smog (烟雾) of the kind that plagued London in the 1950s and is an even greater problem in Los Angeles today. These collections of aerosols reflect the Sun"s heat and thereby cause the Earth to cool. Dr. Rasool and Dr. Schneider have calculated the exact effect of a dust aerosol layer just above the Earth"s surface in the temperature of the planet. As the layer builds up, the present delicate balance between the amount of heat absorbed from the Sun and the amount radiated from the Earth is disturbed. The aerosol layer not only reflects much of the Sun"s light but also transmits the infrared (红外线的) radiation from below. So, while the heat input to the surface drops, the loss of heat remains high until the planet cools to a new balanced state. Within fifty years, if no steps are taken to stop the spread of aerosols in the atmosphere, a cooling of the Earth by as much as 3.5℃ seems inevitable. If that lasts for only a few years it would start another ice age, and because the growing ice caps at each pole would themselves reflect much of the Sun"s radiation it would probably continue to develop even if the aerosol layer were destroyed. The only bright spot in this gloomy forecast lies in the hope expressed by Dr. Rasool and Dr. Schneider that nuclear power may replace fossil fuels in time to prevent the aerosol content of the atmosphere from becoming critical.

单选题Nitrogen is the most plentiful gas in the {{U}}atmosphere.{{/U}}

单选题They didn't want anyone to know about their romance.A. adventureB. mysteryC. poemD. love

单选题I haven"t achieved very much today.

单选题The police arrested the suspect yesterday and released him this morning.

单选题This is not typical of English, but is a feature of the Chinese language.

单选题 阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容从 4个选项中选择1个最佳答案。 {{B}} Migrant (移民的) Workers{{/B}} In the past twenty years, there has been an increasing tendency for workers to move from one country to another. While some countries have restricted (限制) most {{U}}(51) {{/U}} to local people, others have attracted and welcomed migrant workers. This is particularly the case in the Middle East, {{U}}(52) {{/U}} increased oil incomes have enabled many countries to call in outsiders to improve local facilities (设施). Thus the Middle East has attracted oil-workers {{U}}(53) {{/U}} the U.S.A. and Europe. It has also brought in workers from many other countries, {{U}}(54) {{/U}} South Korea and Japan. In view of the difficult living and working {{U}}(55) {{/U}} in the Middle East, it is not surprising that the pay is high to attract suitable workers. Many engineers and technicians can {{U}}(56) {{/U}} at least twice as much money in the Middle East as they can in their own country, and this is a major {{U}}(57) {{/U}}. Sometimes a disadvantage has a compensating (补尝的) advantage. For example, the {{U}}(58) {{/U}} living conditions often lead to increased friendshipwhen workers have to {{U}}(59) {{/U}} on each other for safety and comfort. In a similar way, many migrant workers can save large sums of money partly because of the {{U}}(69) {{/U}} of entertainment (娱乐) facilities. The work is often complex and full of problems but this merely presents greater challenge to engineers who prefer to find solutions to problems rather than do {{U}}(61) {{/U}} work in their home country. One major problem which {{U}}(62) {{/U}} migrant workers in the Middle East is that their jobs are temporary ones. They are nearly always on {{U}}(63) {{/U}}, so it is not easy for them to plan ahead with great confidence. This is to be {{U}}(64) {{/U}} since no country welcomes a large number of foreign workers as permanent residents. In any {{U}}(65) {{/U}}, migrant Workers accept this disadvantage, along with others, because of the considerable financial benefits which they receive.

单选题{{U}}Practically{{/U}} all animals communicate through sounds. A. Almost B. Clearly C. Absolutely D. Basically

单选题Argument among the speakers at the conference is bordering on violence. A. is close to B. is beside C. is next to D. is alongside

单选题Sedimentary rocks cover much of the Earth’s surface, but they are often {{U}}hidden{{/U}} by a thin veneer of soil.

单选题The graduate students will {{U}}convene{{/U}} in the Student Union.

单选题Bill Gates: Unleashing Your Creativity I"ve always been an optimist and I suppose that is rooted in my belief that the power of creativity and intelligence can make the world a better place. For as long as I can remember, I"ve loved learning new things and solving problems. So when I sat down at a computer for the first time in seventh grade, I was hooked. It was a chunky old teletype machine and it could barely do anything compared to the computers we have today. But it changed my life. When my friend Paul Allen and I started Microsoft 30 years ago, we had a vision of "a computer on every desk and in every home," which probably sounded a little too optimistic at a time when most computers were the size of refrigerators. But we believed that personal computers would change the world. And they have. And after 30 years, I"m still as inspired by computers as I was back in seventh grade. I believe that computers are the most incredible tool we can use to feed our curiosity and inventiveness to help us solve problems that even the smartest people couldn"t solve on their own. Computers have transformed how we learn, giving kids everywhere a window into all of the world"s knowledge. They"re helping us build communities around the things we care about and to stay close to the people who are important to us, no matter where they are. Like my friend Warren Buffett, I feel particularly lucky to do something every day that I love to do. He calls it "tap-dancing to work". My job at Microsoft is as challenging as ever, but what makes me "tap-dance to work" is when we show people something new, like a computer that can recognize your handwriting or your speech, or one that can store a lifetime"s worth of photos, and they say, "I didn"t know you could do that with a PC!" But for all the cool things that a person can do with a PC, there are lots of other ways we can put our creativity and intelligence to work to improve our world. There are still far too many people in the world whose most basic needs go unmet. Every year, for example, millions of people die from diseases that are easy to prevent or treat in the developed world. I believe that my own good fortune brings with it a responsibility to give back to the world. My wife, Melinda, and I have committed to improving health and education in a way that can help as many people as possible. As a father, I believe that the death of a child in Africa is no less poignant or tragic than the death of a child anywhere else and that it doesn"t take much to make an immense difference in these children"s lives. I"m still very much an optimist, and I believe that progress on even the world"s toughest problems is possible—and it"s happening every day. We"re seeing new drugs for deadly diseases, new diagnostic tools, and new attention paid to the health problems in the developing world. I"m excited by the possibilities I see for medicine, for education and, of course, for technology. And I believe that through our natural inventiveness, creativity and willingness to solve tough problems, we"re going to make some amazing achievements in all these areas in my lifetime.

单选题 下面有3篇短文，每篇短文后有5道题，每道题后面有4个选项。请根据文章的内容，从每题所给的4个选项中选择1个最佳答案。{{B}}第一篇{{/B}} {{B}}Almost Human?{{/B}} Scientists are racing to build the world's first thinking robot. This is not science fiction: some say they will have made it by the year 2020. Carol Packer reports. Machines that walk, speak and feel are no longer science fiction. Kismet is the name of an android (机器人) which scientists have built at the Massachusetts Institute of Technology (MIT). Kismet is different from the traditional robot because it can show human emotions. Its eyes, ears and lips move to-show when it feels happy, sad or bored. Kismet is one of the first of a new generation of androids -- robots that look like human beings -- which can imitate human feelings. Cog, another android invented by the MIT, imitates the action of a mother. However, scientists admit that so far Cog has the mental ability of a two-year-old. The optimists (乐观主义者) say that by the year 2020 we will have created humanoids (机器人) with brains similar to those of an adult human being. These robots will be designed to look like people to make them more attractive and easier to sell to the public. What kind of jobs will they do? In the future, robots like Robonaut, a humanoid invented by NASA, will be doing dangerous jobs, like repairing space stations. They will also be doing more and more of the household work for us. In Japan, scientists are designing androids that will entertain us by dancing and playing the piano. Some people worry about what the future holds: will robots become monsters (怪物)? Will people themselves become increasingly like robots? Experts predict that more and more people will be wearing micro-computers, connected to the Internet in the future. People will have micro-chips in various parts of their body, which will connect them to a wide variety of gadgets (小装置). Perhaps we should not exaggerate (夸大) the importance of technology, but one wonders whether, in years to come, we will still be falling in love, and whether we will still feel pain. Who knows?

单选题Anderson left the table, remarking that he had some work to do.