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Since the matter was extremely ______, we dealt with it immediately.
A) tough B) tense C) urgent D) instant
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A.enables
B.renders
C.injures
D.flushes
Dear Mr Lee
Subject: Faulty HP 5590 Scanners
Three months ago, our training center bought 10 HP 5590 scanners from your company --- see our order number G868281. Until (1), these scanners worked properly. (2 ), we have started to notice that fuzzy image is becoming increasingly common with these scanners.(3) , this is a problem with this model that appears only after a few months' service. This is not satisfactory.
This matter is causing us great (4), since we need to scan a lot of documents every day. We should,(5 ), like you to replace all of the machines that we bought, with your newer model HP 5591 scanners,(6) , we understand, do not have the same design fault.
(7)you know, we do a lot of business with your company, and we have always (8) pleased with your service. It would be a great (9)if this good relationship is spoiled.
I look forward to (10)your reply soon.
Yours sincerely
Willow Zeng
Willow Zeng
General Manager
Her love and devotion for my brother and me made our lack of material possessions seem insignificant. Even today, if I were given a choice between having love at home and wealth, I would want it just the way I had it. I grew up poor in material things but rich in love.
Since my father was never around long enough to teach me physical things or to play games with me, I didn't succeed in any competitive sport. My mother did her best as a substitute, throwing a ball with me in the lot(空地) behind our house, but it wasn't the same. She was too protective of me, and I didn't have enough confidence in my own abilities to really try anything physically demanding.
The story suggests that the author is______his mother.
A．proud of
B．worried about
C．pitiful for
D．concerned about
Dr. Conrad and William C. Louis presented their initial findings in a talk yesterday at the Fermi National Accelerator Laboratory where the experiment is being performed.
The goal was to confirm or refute observations made in the 1990s in a Los Alamos experiment that observed transformations in the evanescent but bountiful particles known as neutrinos(微中子). Neutrinos have no electrical charge and almost no mass, but there are so many of them that they could collectively outweigh all the stars in the universe.
The new experiment has attracted wide interest. That reflected in part the hope of finding cracks in the Standard Model, which encapsulates physicists' current knowledge about fundamental particles and forces.
The Standard Model has proved remarkably effective and accurate, but it cannot answer some fundamental questions, like why the universe did not completely annihilate(毁灭) itself an instant after the Big Bang.
The birth of the universe 13.7 billion years ago created equal amounts of matter and antimatter. Since matter and antimatter annihilate each other when they come in contact, that would have left nothing to coalesce into stars and galaxies. There must be some imbalance in the laws of physics that led to a slight preponderance of matter over antimatter, and that extra bit of matter formed everything in the visible universe.
The imbalance, some physicists believe, may be hiding in the dynamics of neutrinos.
Neutrinos come in three known types, or flavors. And they can change flavor as they travel. But the neutrino transformations reported in the Los Alamos data do not fit the three-flavor model, suggesting four flavors of neutrinos, if not more.
The new experiment sought to count the number of times one flavor of neutrino, called a muon(μ介子), turned into another flavor, an electron neutrino.
For most of the neutrino energy range they looked at, the scientists did not see any more electron neutrinos than would be predicted by the Standard Model. That ruled out the simplest ways of interpreting the Los Alamos neutrino data, Dr. Conrad and Dr. Louis said.
But at the lower energies, the scientists did see more electron neutrinos than predicted: 369, rather than the predicted 273. That may simply mean that some calculations are off. Or it could point to a subtler interplay of particles, known and unknown.
Dr. Louis said he was surprised by the results". I was sort of expecting a clear excess or no excess", he said. "In a sense, we got both".
It can be inferred from Paragraph 1 that the" initial findings" of Dr. Conrad and Louis are ______.
A．a new class of subatoms.
B．new subatomic particles.
C．new characters of neutrinos.
D．none of the above.
The definition of poverty is a matter of debate. In 1795, a group of English magistrates decided that a minimum in come should be "the cost of a gallon loaf of bread, multiplied by three, plus an allowance for each dependent". Today the Census Bureau defines the threshold of poverty in the United States as the minimum amount of money that families need to purchase a nutritionally adequate diet, assuming they use one third of their income for food. Using this definition, roughly half the American population was poor in the aftermath of the Great Depression of the 1930s. By 1950, the proportion of the poor had fallen to 30 percent and by 1964, to 20 percent. With the adoption of the Johnson administration's antipoverty programs, the poverty rate dropped to 12 percent in 1969. But since then, it has stopped falling. Liberals contend that the poverty line is too low because it fails to take into account changes in the standard of living.
Conservatives say that it is too high because the poor receive other forms of public assistance, including food stamps, public housing subsidies, and health care.
In which of the following years did the poor people constitute the largest proportion of the American population？
A．1973.
B．1987.
C．1969.
D．1983.
The official statistics are mildly discouraging. They show that, if you lump manufacturing and services together, productivity has grown on average by 1.2% since 1987. That is somewhat faster than the average during the previous decade. And since 1991, productivity has increased by about 2% a year, which is more than twice the 1978 - 1987 average. The trouble is that part of the recent acceleration is due to the usual rebound that occurs at this point in a business cycle, and so is not conclusive evidence of a revival in the underlying trend. There is, as Robert Rubin, the treasury secretary, says, a "disjunction" between the mass of business anecdote that points to a leap in productivity and the picture reflected by the statistics.
Some of this can be easily explained. New ways of organizing the workplace--all that re-engineering and downsizing--are only one contribution to the overall productivity of an economy, which is driven by many other factors such as joint investment in equipment and machinery, new technology, and investment in education and training. Moreover, most of the changes that companies make are intended to keep them profitable, and this need not always mean increasing productivity: switching to new markets or improving quality can matter just as much.
Two other explanations are speculative. First, some of the business restructuring of recent years may have been unsuitably done. Second, even if it was well done, it may have spread much less widely than people suppose.
Leonard Schlesinger, a Harvard academic and former chief executive of Au Bon Pain, a rapidly growing chain of bakery cafes, says that much "re-engineering" has been crude. In many cases, he believes, the loss of revenue has been greater than the reductions in cost. His colleague, Michael Beer, says that far too many companies have applied re-engineering in a mechanistic fashion, chopping out costs without giving sufficient thought to long-term profitability. BBDO' s Al Rosen Shine is blunter. He dismisses a lot of the work of re-engineering consultants as mere rubbish—"the worst sort of ambulance-chasing."
It can be inferred form. the passage that the American economic situation is______.
A．not as good as it seems
B．at its turning point
C．encouraging
D．on the way to complete recovery
Over the weekend, we spent hours and hours, staying up late into the night, talking about the people she was hanging around with. She started telling me stories about her new boy friend, about how he experimented with drugs and was into other self-destructive behavior. I was blown away! She told me how she had been lying to her parents about where she was going and even stealing out to see this guy because they didn't want her around him. No matter how hard I tried to tell her that she deserved better, she didn't believe me. Her self-respect seemed to have disappeared.
I tried to convince her that she was ruining her future and heading for big trouble. I felt like I was getting nowhere. I just couldn't believe that she really thought it was acceptable to hang with a bunch of losers, especially her boy friend.
By the time she left, I was really worried about her and exhausted by the experience. It had been so frustrating that I had come close to telling her several times during the weekend that maybe we had just grown too far apart to continue our friendship, but I didn't.I put the power of friendship to the ultimate test. We'd been friends for far too long. I had to hope that she valued me enough to know that I was trying to save her from hurting herself. I wanted to believe that our friendship could conquer anything.
A few days later, she called to say that she had thought long and hard about our conversation, and then she told me that she had broken up with her boy friend. I just listened on the other end of the phone with tears of joy running down my face. It was one of the truly rewarding moments in my life. Never had I been so proud of a friend.
What word best sums up Jennie's boy friend？
A．A drug user.
B．A loser.
C．A trouble maker.
D．A criminal.
Most worthwhile careers require some kind of specialized training. Ideally, therefore, the choice of an【1】should be made even before the choice of a curriculum in high school. Actually,【2】, most people make several job choices during their working lives,【3】because of economic and industrial changes and partly to improve【4】position. The "one perfect job" does not exist. Young people should【5】enter into a broad flexible training program that will【6】them for a field of work rather than for a single【7】.
Unfortunately many young people have to make career plans【8】benefit of help from a competent vocational counselor or psychologist. Knowing【9】about the occupational world, or themselves for that matter, they choose their lifework on a hit-or-miss【10】.Some drift from job to job. Others【11】to work in which they are unhappy and for which they are not fitted.
One common mistake is choosing an occupation for【12】real or imagined prestige. Too many high school students-or their parents for them-choose the professional field,【13】both the relatively small proportion of workers in the professions and the extremely high educational and personal【14】. The imagined or real prestige of a profession or a "white collar" job is【15】good reason for choosing it as life's work.【16】, these occupations are not always well paid. Since a large proportion of jobs are in mechanical and manual work, the【17】of young people should give serious【18】to these fields.
Before making an occupational choice, a person should have a general idea of what he wants【19】life and how hard he is willing to work to get it. Some people desire social prestige, others intellectual satisfaction. Some want security, others are willing to take【20】for financial gain. Each occupational choice has its demands as well as its rewards.
(1)
A．identification
B．entertainment
C．accommodation
D．occupation
That the seas are being overfished has been known for years. What researchers such as Ransom Myers and Boris Worm have shown is just how fast things are changing. They have looked at half a century of data from fisheries around the world. Their methods do not attempt to estimate the actual biomass (the amount of living biological matter) of fish species in particular parts of the ocean, but rather changes in that biomass over time. According to their latest paper published in Nature, the biomass of large predators (animals that kill and eat other animals) in a new fishery is reduced on average by 80% within 15 years of the start of exploitation. In some long-fished areas, it has halved again since then.
Dr. Worm acknowledges that these figures are conservative. One mason for this is that fishing technology has improved. Today's vessels can find their prey using satellites and sonar, which were not available 50 years ago. That means a higher proportion of what is in the sea is being caught, so the real difference between present and past is likely to be worse than the one recorded by changes in catch sizes. In the early days, too, longlines would have been more saturated with fish. Some individuals would therefore not have been caught, since no baited hooks would have been available to trap them, leading to an underestimate of fish stocks in the past. Furthermore, in the early days of longline fishing, a lot of fish were lost to sharks after they had been hooked. That is no longer a problem, because there are fewer sharks around now.
Dr. Myers and Dr. Worm argue that their work gives a correct baseline, which future management efforts must take into account. They believe the data support an idea current among marine biologists, that of the "shifting baseline". The notion is that people have failed to detect the massive changes which have happened in the ocean because they have been looking back only a relatively short time into the past. That matters because theory suggests that the maximum sustainable yield that can be cropped from a fishery comes when the biomass of a target species is about 50% of its original levels. Most fisheries are well below that, which is a bad way to do business.
The extinction of large prehistoric animals is noted to suggest that ______.
A．large animals were vulnerable to the changing environment
B．small species survived as large animals disappeared
C．large sea animals may face the same threat today
D．slow-growing fish outlive fast-growing ones
