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New mineral resources may be discovered during the forthcoming Antarctic_________.
A．expedition
B．excursion
C．execution
D．exposition
答案
更多“New mineral resources may be discovered during the forthcoming Antarctic_________.A．expedi”相关的问题
第1题
New mineral resources may be discovered during the present Antarctic _________.
A．excursion
B．expedition
C．voyage
D．journey
第2题
New mineral resources may be discovered during the forthcoming Antarctic ______.
A．expedition
B．execution
C．excursion
D．extraction
第3题
What can we learn about French people's attitudes toward nuclear power？
A．With hardly any other resource, they chose nuclear as a way.
B．They have always been sticking to building new reactors.
C．They construct nuclear reactors only for their own use.
D．Nicolas Sarkozy toured to promote nuclear expertise to win election.
第4题
听力原文：M: Hi, Anna! Welcome back! How's your trip to the States？
W: Very busy. I had a lot of meetings, so, of course, I didn't have much time to see New York.
M: What a pity! Actually, I have a trip there myself next week.
W: De you？ Then take my advice, do the well-being in the air program. It really works.
M: Oh, I read about that in a magazine. You say it works？
W: Yes, I did the program on the flight to the States, and when I arrived at New York, I didn't have any problem, no jet lag at all. On the way back, I didn't do it, and I felt terrible.
M: You're joking!
W: Not at all, it really meant a lot of difference.
M: Eh. So what did you do？
W: Well, I didn't drink, any alcohol or coffee, and I didn't eat any meat or rich food. I drink a lot of water, and fruit juice, and I ate the meals on the well-being menu. They're lighter. They have fish, vegetables, and noodles, for example, and I did some of the exercises in the program.
M: Exercises？ On a plane？
W: Yes. I didn't do many, of course, there isn't much space on a plane
M: How many passengers do the exercises？
W: Not many.
M: Then how much champagne did they drink？
W: A lot! It was more popular than mineral water.
M: So basically, it's a choice. Mineral water and exercises, or champagne and jet lag.
W: That's right! It's a difficult choice.
(23)
A．To go sightseeing.
B．To have meetings.
C．To promote a new champagne.
D．To join in a training program.
第5题
W: A water purifier! You want to carry even more equipment with you on our hiking trips？
M: If it is lightweight and saves work--yes! And this one fits that description.
W: Really？ I bet it takes up a lot of room.
M: Not at all. It's a straw, much like the ones you use to drink a soda or a milkshake.
W: Really？ That's small.
M: It's plastic and has a series of mineral and chemical filters that strain harmful microbes from water.
W: Yes, but how good a job can it do filtering the germs out of stagnant pond water, or water from lakes and streams？
M: It's fantastic. It makes the water entirely germ-free.
W: But what about salt or chemical pollutants？ Does it clean them out？
M: No, it doesn't remove salt and chemicals. But these are really not major concerns when we're out hiking and camping.
W: Hm... How long will a straw last？
M: For about 100 gallons. But don't worry about measuring that large amount of water. There is a built- in safety feature. The mineral and chemical filters become clogged long before the limit is reached, and the straw then stops drawing water.
W: I think I'll go and get one for my camping trip this weekend.
(20)
A．Small and lightweight.
B．Solid and heavy.
C．Bulky but weightless.
D．Large but necessary.
第6题
Nautilus Minerals, based in Vancouver, is the more advanced of the pair. It has an exploratory licence from Papua New Guinea and has already begun drilling operations 1,600 metres below sea level off the east coast of the country. Another company, Neptune Minerals, based in London and Sydney, has completed test drilling in the deep waters near New Zealand.
Nautilus's deep-water exploration relies on a modified deep-sea remotely operated vehicle (ROV) of the kind normally used in the oil anti telecom industries. It has a manipulator hand containing drilling and cutting tools that allow the robot to retrieve samples of rock from the ocean bed. So far the drilling has only been exploratory, but the prospects look good.
The presence of these rich deposits has been known about for years, says Steven Scott, a geologist at the University of Toronto. He has been researching underwater geology since the 1980s, and in the 1990s he co-discovered the deposit that Nautilus is exploring. So why has it taken so long to move towards the commercial exploitation of deep sea massive sulphide deposits？ Mr. Heydon (the boss of Nautilus) says it is because the ROV technology has only recently be come capable enough. He eventually hopes to use rock-cutting ROVs that will drive across the sea floor, grinding ore as they go and sending it to the surface via a tube at a rate of 400 tonnes per hour. It might also be possible to lift large deposits using compressed air.
All of this can be done, Mr. Heydon believes, for about half as much as opening a new land based mine. Nautilus has spent about $12m in the past year on exploration, and Dr Scott says one test drilling found deposits 19 metres deep. Unlike manganese (锰) mines, which are like golf balls scattered across the seabed, these deep-ocean deposits occur in small areas around extinct hydrothermal vents. Such concentrated deposits ought to make underwater mining highly efficient.
Even if the economies stack up. however, Nautilus and Neptune must overcome concerns over environmental damage. Dr Scott argues that underwater mining will be far less disruptive to the environment than terrestrial mining: there will he no piles of waste rock, since the deposits arc directly on the sea floor. And whereas the oil industry lays pipelines underwater, mining would not leave any permanent structures behind. But governments will need to be convinced of the merit of these arguments before mining can begin.
What do we know from the first paragraph？
A．No mineral companies have succeeded in deep-sea mining.
B．Oil and gas have been regarded as the most useful deep-sea wealth.
C．Only oil and gas industry has been interested in deep-sea mining.
D．The deep-sea mineral wealth has recently become the dream of miners.
第7题
After more than 40 years of parallel development, the
information and life sciences — computing and biology — are
fusing into a single, powerful force that is the foundation for
the biotech century. Increasingly, the computer used to decode, 【S1】______
manage and organize the vast amounts of genetic information
that will be raw resource of the new global economy.
The biotech century promises great riches: genetically
engineered plants and animal to feed a hungry population; genetically 【S2】______
derived sources of energy and fiber to build a renewable society;
wonder drags and genetic therapies to produce healthier babies,
eliminate suffering and extended human lifespan. But a question will 【S3】______
gaunt us: at what cost？
The new genetic commerce raises more troubling issues than
any economic revolution in history. Will the artificial creation of cloned 【S4】______
and transgenic animals mean the end of nature and substitution of a 【S5】______
bio-industrial world？ Will the mass release of thousands of genetically
engineered life forms into the environment cause catastrophic pollution
and reversible damage to the biosphere？ What are the consequences of 【S6】______
the world's gene pool become patented intellectual property, controlled 【S7】______
exclusively by a handful of corporations？ What will it mean to live in a
world where babies are genetically engineered in the womb, and that 【S8】______
people are increasingly identified and stereotyped on the basis of their
genotype？
The debate is not about the science but about how we apply them. 【S9】______
Until now the debate has engaged a very broad group of molecular 【S10】______
biologists and government policy-makers, though the biotech
revolution affects us all. With the new technology flooding into our
lives, the moment has come for a much broader debate, one that involves
the whole society.
【S1】
第8题
If indeed silence is golden, it is also becoming as rare as gold.
It seems that the progresses of man includes a rising volume of noise. 【M1】______
In every home a stereo or television will fill the rooms sound. 【M2】 ______
Between sunrise and sunset, streets and highways are a constant source
of voice from cars, buses, and trucks. You can pass any factory or 【M3】 ______
construction area and the roar of their machinery will make your ears 【M4】 ______
ringing. Music is played in every supermarket, most restaurants, and 【M5】 ______
many offices. Big cities of the world are well-known by. their noisiness.【M6】______
Noise pollution is the new side effect of our technological
age. Day or night, sound of the work fills the air. It seems 【M7】______
that the smoothing effects of silence are nowhere to be found.
Even the quiet of our careful protected wilderness areas can 【M8】______
be invaded at any moment by a passed jet. 【M9】______
We are learning, finally, that silence is a natural resource
and must be protected by law. It appears that we all find company
in sound, if we all demand a little quiet from time to time. 【M10】______
【M1】
第9题
Groundbreaking research by two French geophysicists promises to shed some light on the mystery. Using 80 meters of deep sea sediment (沉淀物) core, they have obtained measurements of magnetic-field intensity that span 11 polarity reversals and four million years. The analysis reveals that intensity appears to fluctuate with a clear, well-defined rhythm. Although the strength of the magnetic field varies irregularly during the short term, there seems to be an inevitable long-term decline preceding each polarity reversal. When the poles flip—a process that takes several hundred thousand years—the magnetic field rapidly regains its strength and the cycle is repeated.
The results have caused a stir among geophysicists. The magnetic field is thought to originate from molten (熔化的) iron in the outer core, 3,000 kilometers beneath the earth's surface. By studying mineral grains found in material ranging from rocks to clay articles, previous researchers have already been able to identify reversals dating back 170 million years, including the most recent switch 730, 000 years ago. How and why they occur, however, has been widely debated. Several theories link polarity flips to external disasters such as meteor (陨星) impacts. But Peter Olson, a geophysicist at the Johns Hopkins University in Baltimore, says this is un. likely if the French researchers are right. In fact, Olson says intensity that predictably declines from one reversal to the next contradicts 90 percent of the models currently under study. If the results prove to be valid, geophysicists will have a new theory to guide them in their quest to understand the earth's inner physics. It certainly points the direction for future research.
Which of the following titles is most appropriate to the passage？
A．Polarity Reversal: A Fantastic Phenomenon of Nature.
B．Measurement of the Earth's Magnetic-Field Intensity.
C．Formation of the Two Poles of the Earth.
D．A New Approach to the Study or Geophysics.
第10题
The main energy foods are the carbohydrates (碳水化合物). These are sugars and starch (淀粉). Wheat and rice are rich in starch and many fruits and vegetables contain considerable amount of sugar. Sweets, honey and jam are also rich in sugar.
Like carbohydrates, fats are food that provides us with energy. Butter, margarine, certain types of fish, eggs, cooking oils and most red meats are rich in fats. Fats can be stored in various parts of the body as reserves of energy. Because fats in general are slowly digested, they satisfy hunger for long periods.
Proteins (蛋白质) are very complex substances. The body needs proteins for the growth of new cells and for the repair and replacement of old cells. Foods rich in proteins are essential to a balanced diet. Milk, some vegetables, meat, chicken, fish, cheese, grains and nuts are some foods rich in proteins.
A good diet will contain a variety of foods so that the body contains all the minerals it needs for good health.
Vitamins are necessary for the proper working of the body. If we eat a variety of foods, we can be sure of obtaining all the vitamins we need.
Water makes up about 70 per cent of the weight of the human body. The average adult needs about two liters of water daily to replace the water the body loses.
If equal weight of the following substances is “burned” in the body, the largest amount of energy is produced by().
A、carbohydrates
B、fats
C、vitamins
D、mineral salts
