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At present, each of eBay's server is equipped with ______ microprocessors.
A．200
B．about 50
C．6 to 12
D．20
答案
更多“At present, each of eBay's server is equipped with ______ microprocessors.A．200B．about 50C”相关的问题
第1题
A.present
B.attend
C.go
D.follow
第2题
A．dominant
B．influential
C．integral
D．drastic
第3题
A.They listen carefully to their opponents" views．
B.They show due respect for each other"s beliefs．
C.They present their views clearly and explicitly．
D.They take care not to hurt each other"s feelings．
第4题
W: But I've been trying to find a new job in another company. You see I've worked here for 3 years without a raise. That's unfair to me.
Q: What does the woman mean？
(17)
A．She is tired of her present job.
B．Her phone number has changed.
C．She doesn't have a fax machine.
D．She may quit her present job soon.
第5题
What do the remarks of Tremaine mean at the end of the passage？
A．The overturn of the present study fruit may betoken new breakthroughs.
B．If we want to achieve something original, we must throw away the old.
C．The fruits available in each field couldn't hold water all the way.
D．It is always exciting experience to discard the old and obtain the new.
第6题
听力原文： At present, human beings have used many devices to measure time. Perhaps, the sundial was, one of the earliest and simplest devices. A sundial can measure the movement of the sun across the sky each day.
The sundial worked very well only when the sun was shining. So other ways of measuring the passing of time were invented at that time. One device was the hourglass. It used a thin stream of falling sand to measure time.
By the 1700s, people had already developed mechanical clocks and watches. And today many of our clocks and watches are electronic.
So we have devices to mark the passing of time. But what time is it now？ Clocks in different parts of the world do not show the same time at the same time. As international communications and travel grew, it became clear we need a way to establish a common time for all parts of the world.
In 1884, an international conference divided the world into 24 time areas or zones. Each zone represents one hour. The astronomical observation in Greenwich, England, was chosen as the starting point for the time zone.
Most people have no trouble in agreeing that time moves forward. Some scientists believe there is one reason why time moves forward. It is clear we need a way to establish a common time for all parts of the world with scientific law: the second law of thermodynamics. The law says disorder increases with time.
(33)
A．It measures the length of a day and a night.
B．it measures the movement of the sun each day.
C．It measures the passing of hours, minutes and perhaps seconds.
D．It measures the shadow of the stick across the flat surface of the sundial.
第7题
Which statement is TRUE about population increase？
A．There might be an increase of 2.2 billion persons from 1975 to the year 2000.
B．About 50,000 babies are born annually at present.
C．Between 8000 B.C. and the present, the population increase is about 80,000,000 persons each year.
D．The population increased faster between 8000 B.C. and 1650 than between 1650 and the present.
第8题
Passage Two:Questions 26 to 30 are based on the following passage.A breakthrough (突破) in the provision of energy from the sun for the European Economic Community (EEC) could be brought forward by up to two decades, if a modest increase could be provided in the EEC’s research effort in this field, according to the senior EEC scientists engaged in experiments in solar energy at EEC’s scientific laboratories at Ispra, near Milan.
The senior West German scientist in charge of the Community’s solar energy programme, Mr. Joachim Gretz, told journalists that at present levels of research spending it was most unlikely that solar energy would provide as much as three per cent of the Community’s energy requirements even after the year 2000. But he said that with a modest increase in the present＜ sums, devoted by the EEC to this work it was possible that the breakthrough could be achieved by the end of the next decade.
Mr. Gretz calculates that if solar energy only provided three per cent of the EEC’s needs, this could still produce a saving of about a billion pounds in the present bill for imported energy each year. And he believes that with the possibility of utilizing more advanced technology in this field it might be possible to satisfy a much bigger share of the Community’s future energy needs.
At present the EEC spends about $2.6 millions a year on solar research at Ispra, one of the EEC’s official joint research centres, and another $3 millions a year in indirect research with universities and other independent bodies.
第26题：The phrase “be brought forward” (Line 2, Para. 1) most probably means ________.
A) be expected
B) be completed
C) be advanced
D) be introduced
第9题
If pollution continues to increase at the present rate, formation of aerosols (悬浮微粒) in the atmosphere will cause the onset (开始) of an ice age in about fifty years' time. This conclusion, reached by Dr. S. Rasool and Dr. H. Schneider of the United States Goddard Space Flight Centre, answers the apparently conflicting questions of whether an increase in the carbon dioxide 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 specters 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 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 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.
The author's main purpose in writing the article is to warn of ______.
A．warm weather
B．hot weather
C．a new ice age
D．a new iceberg
第10题
In an age when the US is seen as being in desperate, almost cut-throat competition with industrial neighbors, it becomes an article of faith that to maintain present standards of living, education must increasingly focus upon training the youth of the country to compete in such markets. This demand is, of course, nothing new. A number of factors come together to provide the motive force for making education the handmaiden of the job market. For those with economic blinkers, such concentration makes good sense, but for those who take a wider view of the purposes of education, this appears narrow and damaging, even, in the long term, to the economic good health of the country. It is possible to argue for the ultimate purposes of education from different standpoints.
The one that appears to be the motive force in much educational decision-making at the present time values knowledge that is conducive to the furtherance of the national economic well-being. It sees the child as a being to be trained to fit into this economic machine. Initiative and activity are encouraged only as far as these dovetail with ultimate occupational destinations. The teacher, therefore, is seen as a trainer, a constructor, a transmitter. However, there are many who value knowledge which is perceived as part of that country's cultural heritage while other child-centered advocates see the curriculum as based on each individual child's experiences and interests, each being active, involved, unique constructors of their own reality. Others see schools as being essentially concerned with pressing social issues which need to be resolved, and therefore the curriculum takes the form. of being topic or problem-based.
Such sketches do not begin to do justice to the complexity and richness of argument, which may be contained in differing educational ideologies. However, if they at the very least convey the profound conflicting views, these descriptions suggest that there is truth in each of them, but none must have the stage to itself.
According to the text, it is not surprising that ______.
A．business and education finds so much in common
B．politicians expect education to be like a business
C．the education world is managed by people from the business philosophy
D．those who come from the business world think education should serve industry needs
