单选题What Should I Say to the Person Who Has Cancer? It is normal to feel that you don"t know what to say to someone who has cancer. You might only know the person casually, or you may have worked 1 or lived near each other for many years and have a closer relationship. The most important 2 you can do is to acknowledge the situation in some way—whatever is most comfortable for you. You can show interest and concern, you can express encouragement, or you 3 offer support. Sometimes the simplest expressions of concern are the 1 meaningful. While it is good to be encouraging, it is also important 5 to show false optimism or to tell the person with cancer to always have a positive attitude. Doing 6 things may discount their fears, concerns, or sad feelings. It is also tempting to say that you know 7 the person feels. While you may know this is a difficult time, no one can know exactly how the person with 8 feels. Humor can be an important way 9 coping. It is also another source of support and encouragement. Let the person with cancer 10 the lead; it is healthy if they find something funny about a side effect, like hair loss or increased appetite, and you can certainly join 11 in a good laugh. This can be a great way to relieve stress and to take a break from the 12 serious nature of the situation. When the person with cancer looks good, let them know! Refrain (忍住) 13 comments when their appearance isn"t as good, such as "You"re looking pale," or "You"ve lost weight." Cancer and its treatment can be very unpredictable. Be prepared for good days and bad 14 . Refrain from telling the person with cancer stories about family members or friends who have had cancer. Everyone is different, and these stories may not be helpful. Instead, it is better simply to tell them you know 15 about cancer because you"ve been through it with someone else.

单选题Alice Walker"s graphic depiction of the lives of Black people in the south has established her as one of the most promising contemporary writers in the United States.

单选题"OH DEAR! Oh dear! I shall be too late!" So muttered the White Rabbit just before he plunged into Wonderland, with Alice in pursuit. Similar utterances have been escaping the lips of European physicists, as it was confirmed last week that their own subterranean Wonderland, a new machine called the Large Hadron Collider, will not now begin work until May 2008. This delay may enable their American rivals to scoop them by finding the Higgs boson—predicted 43 years ago by Peter Higgs of Edinburgh University to be the reason why matter has mass, but not yet actually discovered. The Large Hadron Collider is a 27km-long circular accelerator that is being bulk at CERN, the European particle-physics laboratory near Geneva, specifically to look for the Higgs boson. When it eventually starts work, it will be the world"s most powerful particle collider. It will also be the most expensive, having cost $ 8 billion to build. The laboratory had hoped it would be ready in 2005, but the schedule has slipped repeatedly. The most recent delay came at the end of March, with the dramatic failure of a magnet assembly that had been supplied by CERN"s American counterpart, the Fermi National Accelerator Laboratory (Fermi lab) near Chicago. This device was one of four designed to focus beams of particles before they collide in the experimental areas. Admittedly, it had been placed under extreme conditions when it failed, but such forces are to be expected from time to time when the machine is running normally. The magnets have yet to be fixed, although physicists think they know how to do it. Other, smaller hitches have compounded the problem. The collider has been built in eight sections, each of which must be cooled to temperatures only just above absolute zero. This is because the magnets used to accelerate the particles to the high energies needed for particle physics rely on the phenomenon of superconductivity to work—and superconductivity, in turn, needs extremely low temperatures. Unfortunately, the first of the eight sections took far longer to chill than had been expected. If, as the other seven sections are cooled, further problems emerge, the start date will have to be put back still further. It takes a month to cool each section, and a month to warm each one back up to normal temperatures again. If it took, say, a month to fix any problems identified as a section cooled, each cycle would postpone the start date by three months. To accelerate progress (as well as particles), CERN"s management decided last week to cancel an engineering run scheduled for November. Instead of beginning slowly with some safe-but-dull low-energy collisions, the machine"s first run will accelerate its particles to high energies straight away. Such haste may be wise, for rumours are circulating that physicists working at the Tevatron, which is based at Fermi lab and is currently the world"s most powerful collider, have been seeing hints of the Higgs boson. Finding it would virtually guarantee the discoverer a Nobel prize—shared jointly, no doubt, with Dr. Higgs. Hence the rush, as hundreds of physicists head down the rabbit hole, seeking their own adventures in Wonderland.

单选题When an organization acquires a computer system, it decides precisely what forms of input would be most Ufavorable/U.

单选题What Is the Coolest Gas in the Universe? What is the coldest air temperature ever recorded on the Earth? Where was this low temperature recorded? The coldest recorded temperature on Earth was -91℃, which 1 in Antarctica in 1983. We encounter an interesting situation when we discuss temperatures in 2 temperatures in Earth orbit actually range from about 20℃ to 120℃. The temperature depends upon 3 you are in direct sunlight or shade. Obviously, -120℃ is colder than our body can safely endure. Thank NASA science for well-designed space 4 that protect astronauts from these temperature extremes. The space temperatures just discussed affect only our areal of the solar 5 . Obviously, it is hotter closer to the Sun and colder as we travel away from the Sun. Astronomers estimate temperatures at Pluto are about -210℃. How cold is the lowest estimated temperature in the entire universe? Again, it depends upon your 6 . We are taught it is supposedly 7 to have a temperature below absolute zero, which is -273℃, at which atoms do not move. Two scientists, whose names are Cornell and Wieman, have successfully cooled down a gas to a temperature barely 8 absolute zero. They won a Nobel Prize in Physics in 2001 for their work—not a discovery, in this case. Why is the two scientists work so important to science? In the 1920s, Satyendra Nath Bose was studying an interesting 9 about special light particles we now call photons. Bose had trouble 10 other scientists to believe his theory, 11 he contacted Albert Einstein. Einstein"s calculations helped him theorize that atoms 12 behave as Bose thought--but only at very cold temperatures. Scientists have also discovered that 13 atoms can help them make the world"s atomic docks even more accurate. These clocks are so accurate today they would only lose one second 14 six million years! Such accuracy will help us travel in space because distance is velocity times time (d=v×t). With the long distances involved in space 15 , we need to know time as accurately as possible to get accurate distance.

单选题Japanese Car Keeps Watch for Drunk Drivers A concept car developed by Japanese company Nissan has a breathalyzer-like detection system and other instruments that could help keep drunk or over tired drivers off the road. The car"s sensors check odors inside the car and monitor a driver"s sweat for traces of alcohol. An in-car computer system can issue an alert or even lock up the ignition system if the driver seems over-the-limit. The air odor sensors are fixed firmly and deeply in the driver and passenger seats, while a detector in the gear-shift knob measures perspiration from the driver"s palm. Other carmakers have developed similar detection systems. For example, Sweden"s Volvo has developed a breathalyzer attached to a car"s seat belt that drivers must blow into before the engine will start. Nissan"s new concept vehicle also includes a dashboard-mounted camera that tracks a drivers alertness by monitoring their eyes. It will sound an alarm and issue a spoken warning in Japanese or English if it judges that the driver needs to pull over and rest. The car technology is still in development, but general manager Kazuhiro Doi says the combination of different detection systems should improve the overall effectiveness of the technology. "For example, if the gear-shift sensor was bypassed by a passenger using it instead of the driver, the facial recognition system would still be used," Doi says. Nissan has no specific timetable for marketing the system, but aims to use technology to cut the number of fatalities involving its vehicles to half 1995 levels by 2015. The car"s seat belt can also tighten if drowsiness is detected, while an external camera checks that the car is keeping to its lane properly. However, Doi admits that some of the technology, such as the alcohol odor sensor, should be improved. "If you drink one beer, it"s going to register, so we need to study what"s the appropriate level for the system to activate," he says. In the UK, some research groups are using similar advanced techniques to understand driver behavior and the effectiveness of different road designs.

单选题The accident has not done any permanent damage.

单选题Many students were absent, {{U}}notably{{/U}} the monitor. A.noticeably B.remarkably C.particularly D.significantly

单选题The used and benefits of aromatherapy need to

单选题A small number of {{U}}firms{{/U}} have stopped trading

单选题The description about the murderer was pretty vague .

单选题Mr. Smith realized that Donald was innocent

单选题In the dark street, there was not a single person ______ she could turn for help.A. thatB. whoC. from whomD. to whom

单选题It is absurd to predict that the sun will not rise tomorrow.

单选题Scientists Develop Ways of Detecting Heart Attack German researchers have come up with a new generation of defibrillators (除颤器) and early-warning software aimed at offering heart patients greater protection from sudden death from cardiac arrest (心脏骤停). In Germany alone around 100,000 people die annually as a result of cardiac arrest and many of these cases are caused by disruption to the heart"s rhythm. Those most at risk are patients who have already suffered a heart attack, and for years the use of defibrillators has proved useful in diagnosing life-threatening disruptions to heart rhythms and correcting them automatically by intervening within seconds. These devices take on a range of functions, such as that of pacemaker. Heart specialists at Freiburg"s University Clinic have now achieved a breakthrough with an implanted defibrillator capable of generating a six-channel electrocardiogram (ECG) within the body. This integrated system allows early diagnosis of acute blood-flow problems and a pending (潜在的) heart attack. It will be implanted in patients for the first time this year. Meanwhile, researchers at the Fraunhofer Institute for Applied Mathematics in Kaiserslautern have developed a new computer software that renders the evaluation of ECG data more precise. The overwhelming majority of patients at risk will not have an implanted defibrillator and must for this reason undergo regular ECGs. "Many of the current programs only take into account a linear correlation of the data. We are, however, making use of a non-linear process that reveals the chaotic patterns of heart beats as an open and complex system," Hagen Knaf says. "In this way changes in the heart beats over time can be monitored and individual variations in patients taken into account." An old study of ECG data, based upon 600 patients who had suffered a subsequent heart attack, enabled the researchers to compare risks and to show that the new software evaluates the data considerably better.

单选题All proposals are likely to be {{U}}rejected{{/U}}.

单选题Congratulations, It Will Be A Boy! Until just a few years ago, making a baby boy or a girl was pretty much a hit-or-miss affair. Not anymore. Parents who have access to the latest genetic testing techniques can now predetermine their baby"s sex with great accuracy, as Monique and Scott Collins learned to their delight two years ago, when their long-wished-for daughter Jessica was born after genetic prescreening(基因筛选). And baby Jessica is just the beginning. Within a decade or two, it may be possible to screen kids almost before conception (怀孕) for an enormous range of attributes (特性), such as how tall they are likely to be, what body type they will have, their hair and eye color, what sort of illness they will be naturally resistant to, and even, conceivably(可想见地), their IQ and personality type. In fact, if gene therapy lives up to its promise, parents may someday be able to go beyond weeding out(筛去) undesirable traits and start actually inserting the genes they want—perhaps even genes that have been crafted(创造) in a lab. Before the new millennium is many years old, parents may be going to fertility clinics(生殖诊所) and picking from a list of options the way ear buyers order air conditioning and chrome alloy(铬合金) wheels. "It is the ultimate shopping experience: designing your baby," says biotechnology critic Jeremy Rifkin, who is appalled by the prospect. "But in a society used to cosmetic surgery(整容手术), this is not a big step." The prospect of designer(定制) babies, like many of the ethnical conundrums(难题)posed by the genetic revolution, is confronting the world so rapidly that doctors, ethicists (伦理学家), religious leaders and politicians are just starting to grapple with(与……进行格斗) the implications—and trying to decide how they feel about it all. They still have a bit of time. Aside from gender, the only traits they can now be identified at the earliest stages of development are about a dozen of the most serious genetic diseases. Gene therapy in embryos(胚胎) is at least a few years away. And the gene or combination of genes responsible for most of our physical and mental attributes has not even been identified yet. Besides, say clinicians, even if the techniques for making designer babies are perfected within the next decade, they should be applied in the service of disease prevention, not improving on nature.

单选题Some drugs taken in large quantities cause {{U}}permanent{{/U}} brain damage.

单选题Nurses often earn as much money as physicians do because they tend to work long days and at odd hours.

单选题I"m Sorry, I won"t Apologize Almost daily, news reports include accounts of public figures or heads of companies being forced to say they"re sorry. In a recent case, Marge Schott, managing partner of the Cincinnati Reds, at first did not want to apologize for her remark that Hitler "was good at the beginning but he just went too far. "Under pressure, she finally said that she regretted her remarks "offended many people. "Predictably-and especially given her history with such commentsmany were not satisfied with this response and successfully lobbied for her resignation. This particular use of "I"m sorry" has a familiar ring. The other day my husband said to me, "I"m sorry I hurt your feelings. "I knew he was really trying. He has learned, through our years together, that apologies are important to me. But he was grinning, because he also knew that "I"m sorry I hurt your feelings" left open the possibility-indeed, strongly suggested-that he regretted not what he did but my emotional reaction. It sometimes seems that he thinks the earth will open up and swallow him if he admits fault. It may appear that insisting someone admit fault is like wanting him to humiliate himself. But I don"t see it that way, since it"s no big deal for me to say I made a mistake and apologize. The problem is that it becomes a big deal when he won"t. This turns out to be similar to the Japanese view. Following a fender bender, according to a Times article, the Japanese typically get out of their cars and bow, each claiming responsibility. In contrast, Americans are instructed by their insurance companies to avoid admitting fault. When an American living in Japan did just that-even though he knew he was to blame-the Japanese driver "was so incensed by the American"s failure to show contrition that he took the highly unusual step of suing him. " The Japanese driver and I are not the only ones who are offended when someone obviously at fault doesn"t just less up and apologize. A woman who lives in the country told me of a similar reaction. One day she gave her husband something to mail when he went into town. The next day, when they left the house together, she found her unmailed letter in the car. He said, "Oh, I forgot to mail your letter. "She was furious-not because he had forgotten, but because he didn"t apologize.