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Arctic explorers may catch colds when ______.
A．they are working in the isolated arctic regions
B．they are writing reports in terribly cold weather
C．they. are free from work in the isolated arctic regions
D．they are coming into touch again with the outside world
答案
更多“Arctic explorers may catch colds when______.A．they are working in the isolated arctic regi”相关的问题
第1题
The Cold Places
The Arctic is a polar region. It surrounds the North Pole.
Like Antarctica, the Arctic is a land of ice and snow. Antarctica holds the record for a low temperature reading--125 degrees Fahrenheit below zero. Reading of 85 degrees below zero is common in both the Arctic and Antarctica. Winter temperatures average 30 degrees below zero in the Arctic. At the South Pole the winter average is about 73 degrees below zero.
One thing alone makes it almost impossible for men to live in Antarctica and in parts of the Arc tic. This one thing is the low temperature--the killing chill of far North and the polar South.
To survive, men must wear the warmest possible clothing. They must build windproof shelters. They must keep heaters going at all times. Not even for a moment can they be unprotected against the below-zero temperatures.
Men have a way of providing for themselves. Polar explorers wrap themselves in warm coats and furs. The cold makes life difficult. But the explorers can stay alive.
What about animals？ Can they survive？ Do we find plants？ Do we find life in the Arctic and in Antarctica？ Yes, we do. There is life in the oceans. There is life on land.
Antarctica, as we have seen, is a cold place indeed. But this has not always been the case. Expedition scientists have discovered that Antarctica has not always been a frozen continent. At one time the weather in Antarctica may have much like our own.
Explorers have discovered coal in Antarctica. This leads them to believe that Antarctica at one time was a land of swamps and forests. Heat and moisture must have kept the trees in the forests alive.
The lowest temperature that man has ever known was recorded in Antarctica.
A．Right
B．Wrong
C．Not mentioned
第2题
根据材料，回答题。
The Cold Places
The Arctic is a polar region. It surrounds the North Pole.
Like Antarctica， the Arctic is a land of ice and snow. Antarctica holds the record for a low temperature reading——125 degrees Fahrenheit below zero~ Reading of 85 degrees below zero is common in both the Arctic and Antarctica. Winter temperatures average 30 degrees below zero in the Arctic. At the South Pole the winter average is about 73 degrees below zero.
One thing alone makes it almost impossible for men to live in Antarctica and in parts of the Arctic. This one thing is the low temperature——the killing chili of far North and the polar South.
To survive， men must wear the warmest possible clothing. They must build windproof shelters. They must keep heaters going at all times. Not ever for a moment can they be unprotected "against the below-zero temperatures.
Men have a way of providing for themselves. Polar explorers wrap themselves in warm coatsand furs. The cold makes life difficult. But the explorers can stay alive.
What albout animals？ Can they survive？ Do we find plants？ Do we find life in the Arctic andin Antarctica？ Yes， we do. There is life in the oceans. There is life on land.
Antarctica， as we have seen， is a cold place indeed. But this has not always been the case.
Expedition scientists have discovered that Antarctica has not always been a frozen continent. At one time the weather in Antarctica may have much like our own.
Explorers have discovered coal in Antarctica. This leads them to believe that Antarctica at one time was a land of swamps and forests. Heat and moisture must have kept the trees in the forests alive.
The lowest temperature that man has ever known was recorded in Antarctica. 查看材料
A.Right
B.Wrong
C.Not mentioned
第3题
Trade, according to the passage, has never really touched Antarctic because Antarctic is
A．a land surrounded by a great ocean
B．an empty desert and has no plant life
C．not open to public
D．different from the Arctic
第4题
Which of the following statements is true？
A．Arctic explorers think it is fun to live on ice for months.
B．To Arctic explorers, --60 °F with high winds and heavy snow is coldest.
C．The Antarctic has--50 °F or --60weather all the year round.
D．To Antarctic explorers, --60 °F with winds and heavy snow is coldest.
第5题
What is Cold？
How cold is cold？ It all depends on who is talking. To us ordinary people nothing in the world maybe so cold as failing through the ice on a frozen lade, or huddling(卷缩)on a windswept mountain hoping to be rescued in the dead of winter. Some may even think they are freezing to death when rushing under an ice-cold shower just out of a warm bed. Indeed, we all know what cold means. Arctic(北极) .explorers would laugh at such ideas. Down in the Antarctic(南极), where scientists of many nations spend very dark months living on a sheet of ice two miles thick, the temperature spends most of its time at 50or60 degrees Fahrenheit below zero, often with hundred-mile winds and heavy snowstorms. This is the cold that is cold, to them.
Space people have still another standard. The coldest place in which a person can live and survive is some 400 degrees hotter than space itself,". However, the coldest place in earth-colder even than space-is inside a machine called a cryostat(低温保持器). Here, scientists and engineers in thousands of laboratories and factories in many parts of the world regularly make cold that turns the South Pole's worst into a pleasant summer day. They are inching toward such cold that there is no temperature at all-down a frozen valley that leads to Absolute Zero, 459.67 degrees Fahrenheit below our zero of a cold winter's day.
According to the passage, nothing is so cold to an ordinary person as ______.
A．waiting for death on top of a mountain in winter
B．being trapped in a mountain swept by wind in severe winter
C．taking a cold shower right out of bed
D．slipping on a frozen lake
第6题
What may be some of the reasons for the ice melt in the Arctic？
A．Unusually strong winds and clearer skies．
B．Heavy clouds and light winds．
C．Longer summers and shorter winters．
D．Thin ice and open water．
第7题
What is said about the warming in the Arctic？
A．Human activities have sped it up.
B．It may change the food chains.
C．It is affected by the release of the Pops.
D．It happened earlier than other regions.
第8题
It can be learned from the last sentence that______．
A．the ice melt in the Arctic may never stop．
B．scientists are trying hard to stop the ice melt in the Arctic．
C．scientists are delighted to find out what is going on in the Arctic．
D．the warming trend in the Arctic can be reversed in the near future．
第9题
North Pole Explorations
If Santa Clans really does reside at the North Pole, he must live a lonely life. The North Pole isn't what most of us would consider a hospitable place as the average winter temperature there is 40 degrees below zero Fahrenheit (华氏温度) (-40 Celsius). And while Santa's reindeer are considered Arctic animals, not much life actually calls the North Pole its permanent home.
For adventurers, the North Pole is comparable to outer space: an unknown frontier that's ripe for exploration--and exploitation. The region doesn't belong to any one country, so there are always disputes about who can lay claim to the untapped natural resources there. And although the prospect of melting ice around. the North Pole isn't pleasant from a global warming standpoint, it could make those resources easier to reach.
North pole location
There are two North Poles. The one most people think of is the geographic North Pole, which is located approximately 450 miles (724 kilometers), north of Greenland, at 90 degrees north latitude. The magnetic North Pole is based on the Earth's magnetic field and is slowly drifting across the Canadian Arctic.
Because all lines of longitude converge (向中聚集) at the North Pole, it's not technically in any time zone (or, it's in every time zone, del)ending on your perspective). As a result, we generally use Coordinated Universal Time (UTC) at the. North Pole. Coordinated Universal Time is used mostly in astronomy and navigation: It's similar to Greenwich Mean Time (the time kept on the Greenwich meridian, longitude zero) but scientifically more precise.
The sun sets at the North Pole in early October. The next sunrise is in early March. In between, there's a continuous twilight as the Earth moves on its axis. As a result of all this, the North Pole is obviously cold. In the winter, when the North Pole is farthest from the sun on the Earth's axis, the average temperature is -40 degrees Fahrenheit (-40 Celsius) during December and January, but can dip into the negative 50s. The seawater beneath the ice of the North Pole is a relatively mild-28 degrees F (-33 C). In the summer, the Pole averages 32 degrees F (0 C). But the North Pole isn't as cold as it used to be.
History of North Pole expeditions
People have always had the desire to explore new plies. Explorers throughout history have been motivated--at least in part--by the promise of fame and fortune, and North Pole exploration is no exception. The first North Pole explorers were in search of the Northwest Passage, a route through the Arctic that would create easier trade--and great wealth--for the country that discovered it. When these explorers came back with tales of diamonds and coal near the Pole, the world started seeing the Arctic as a frozen treasure chest. In fact, a U. S. Geological Survey estimates that nearly 25 percent of the world's undiscovered oil and gas are buried in the Arctic, which is a big reason for the disputes among the countries that are eager to claim the region for themselves.
There were occasional North Pole expeditions in the 18th century (in 1755, the British Parliament offered a reward to the first ship to come within a degree of the Pole), but it wasn't until the early 1900s that things really got going. In 1908, American Frederick Albert Cook was the first person to claim to have reached the North Pole. But his countryman Robert Edwin Peary, with support from Cook's traveling companions, disputed the claim, and Cook was widely discredited.
Peary (with a team of 24 men, 19 sledges and 133 sled dogs) ended up making the first undisputed visit to the North Pole on April 6, 1909. But there's still some controversy attached to the claim, mostly because of Peary's improbable 37-day time frame. Most expeditions of the era took months--at least--to come close to the goal. However, in April 2005, explorer
A．it delivers an undisturbed home for many animals
B．most creatures cannot adapt to its environment
C．only Santa Claus likes living there with his reindeer
D．only a few kinds of creatures can't bear its coldness
第10题
Arctic Melt
Earth's North and South Poles are famous for being cold and icy．Last year，however，the amount of ice in the Arctic Ocean(北冰洋)fell to a record low．
Normally，ice builds in Arctic waters around the North Pole each winter and shrinks(缩小)during the summer．But for many years，the amount of ice left by the end of summer has been declining．
Since 1979，each decade has seen an 11.4 percent drop in end-of-summer ice cover．Between 1981 and 2000．ice in the Arctic lost 22 percent of its thickness-becoming 1.13 meters thinner．
Last summer，Arctic sea ice reached its thinnest levels yet．By the end of summer 2007，the ice had shrunk to cover just 4.2 million square kilometers．That's 38 percent less area than the average cover at that time of year．And it's a very large 23 percent below the previous record low，which was set just 2 years ago．This continuing trend has made scientists concerned．
There may be several reasons for the ice melt，says Jinlun Zhang，an oceanographer(海洋学家)at the University of Washington in Seattle．Unusually strong winds blew through the Arctic last summer． The winds pushed much of the ice out of the central Arctic．1eaving a large area of thin ice and open wa ter．
Scientists also suspect that fewer clouds cover the Arctic now than in the past．Clearer skies allow more sunlight to reach the ocean．The extra heat warms both the water and the atmosphere．In parts of the Arctic Ocean last year，surface temperatures were 3.5？ Celsius warmer than average and 1.5℃ warmer than the previous record high．
With both air and water getting warmer，the ice is melting from both above and below．In some parts of the Beaufort Sea，north of Alaska and western Canada，ice that measured 3.3 meters thick at the beginning of the summer measured just 50 cm by season's end．
The new measurements suggest that melting is far more severe than scientists have seen by just looking at ice cover from above．Some scientists fear that the Arctic is stuck in a warming trend from which it may never recover．
The word“builds”in paragraph 2 could be best replaced by______．
A．establishes．
B．expands．
C．creates．
D．constructs．
