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单选题
Antarctica is the most（）continent on the planet.
A
isolated
B
generated
C
accelerated
D
congratulated
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更多 “单选题Antarctica is the most（）continent on the planet.A isolatedB generatedC acceleratedD congratulated” 相关考题
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Growing numbers of scientists therefore see Antarctica as a distant early warning sensor, where potentially dangerous global trends may be spotted before they show up to the north._______________________________________________________________________________
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The cold and dry climate of Antarctica makes it one of the toughest places on Earth to live, and you can see that by contrasting what lives there with what lives in the Arctic.
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Antarctica isn't only the coldest place on Earth, it's also one of the world's driest deserts.
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The cold and dry climate of Antarctica ______ it one of the toughest places on Earth to live.A、producesB、manufacturesC、doesD、makes
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Antarctica is the most ______ continent on the planetA、isolatedB、generatedC、acceleratedD、congratulated
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翻译句子The South Pole, by contrast, is over land, on the continent called Antarctica. Not only is the South Pole on a continent, it's on a very high continent.
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Who was the first person to _______ the American continent?
A.findB.discoverC.inventD.find out
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共用题干
The Cold PlacesThe 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一125 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一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.At one time,the weather in Antarctica was so warm and damp that trees grew there.A:Right B:Wrong C: Not mentioned
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共用题干
The Cold PlacesThe 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一125 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一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.Despite the hostile environment,both animals and plants can be found in the oceans and on land in polar areas.A:Right B:Wrong C:Not mentioned
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共用题干
Touring the Antarctic Brings Danger1 Ship tourism to Antarctica is on the rise.More than 35,000 tourists are expected to visit Antarctica this spring and summer. In 1992一1993,6,750 visited Antarctica,according to the Antarctic Treaty Secretariat. All of this tourism,however,is posing great danger to both tourists and the environment.2 Among the tourist ships that visit the continent,the Explorer,a Canadian ship,was one of the first. Launched in 1969,it was built to ferry tourists to Antarctica.Last week,however,it became the first commer- cial passenger ship to sink beneath the polar region's waters.Fortunately,all of the passengers and crew members were evacuated（撤离）from the ship. However , the sunken ship threatens the Antarctic'S fragile environment.The ship was estimated to be holding 48,000 gallons of marine diesel fuel.3 The accident was not unanticipated.Both the US and the UK had warned at a conference of Antarc- tic treaty nations in May that the tourism situation in the region was a potential disaster. The US said in a pa- per,"People should take a hard look at tourism issues now,especially those related to vessel safety.""The increasing number of ships operating in Antarctica means that ships are under greater pressures to meet the time slots for visiting key sites,"the British government wrote in a paper at the meeting of treaty nations.4 Although the Antarctic seas are relatively calm,floating ice poses a potential threat to ships.The owner of the Explorer attributed the sinking to a fist-size hole in the hull created by ice.Many of the other large cruise ships now visiting Antarctica have little or no ice reinforcement in their designs.Such ships generally can only come to the continent at the height of summer. But the tourist rush is pushing vessels into dangerous situations.5 As a natural frontier,Antarctica is in a legal muddle.There are no obvious answers as to who is re- sponsible for dealing with the threat that tourism may cause to human life and the environment.6 Jim Barnes,executive director of the Antarctic and Southern Ocean Coalition,told the New York Times,"There'S no military or coast guard for Antarctica."He asked,"Do we want this(the Antarctic)to become Disneyland,or do we want some controls?"The accident of the Explorer's sinking is__________.A:safeB:being hit by floating iceC:pollute the seaD:foreseenE:unclearF:dealing with the threat
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The history of the exploration of Antarctica recounts many tales of perseverance and suffering.A:endurance
B:skill
C:generosity
D:disturbance
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Why has Australia always been a continent with few people?（）ABecause Australia is too far away from Europe.BBecause Australia is the least mountainous and most level of the world.s continents.CBecause Australia is separated from the rest of the world by seas.DBecause most of the continent is hot and dry.
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Although Australia has a large area,（）of the continent is desert or semi-desert.Aone thirdBtwo thirdsChalfDmore than half
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Like the island continent of Antarctica,Australia is located entirely in（）Athe Northern HemisphereBthe Southern HemisphereCthe North PoleDthe South Pole
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Thomas Becket spent（）years on the continent and returned to England in 1170.AfourBfiveCsixDseven
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Why has Australia always been a continent with few people?（）A、Because Australia is too far away from Europe.B、Because Australia is the least mountainous and most level of the world.s continents.C、Because Australia is separated from the rest of the world by seas.D、Because most of the continent is hot and dry.
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Like the island continent of Antarctica,Australia is located entirely in（）A、the Northern HemisphereB、the Southern HemisphereC、the North PoleD、the South Pole
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（）is a railway container transportation linking both end of the oceans.A、Bridge transportB、Land transportC、Land bridge transportD、Cross continent transport
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（）is a railway container transportation linking both end of the oceans . A、Bridge transportB、land transportC、land bridge transportD、cross continent transport
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单选题We went right round to the west coast by _____ sea instead of driving across _____ continent.A
the; theB
/; theC
the; /D
/; /
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单选题Like the island continent of Antarctica,Australia is located entirely in（）A
the Northern HemisphereB
the Southern HemisphereC
the North PoleD
the South Pole
考题
问答题Practice 10 Glaciers in Antarctica are melting faster and across a much wider area than previously thought, a development that threatens to raise sea levels worldwide and force millions of people to flee low-lying areas. Researchers once believed that the melting was limited to the Antarctic Peninsula, a narrow tongue of land pointing toward South America. But satellite data and automated weather stations now indicate it is more widespread. The melting also extends all the way down to what is called west Antarctica. By the end of the century, the accelerated melting could cause sea levels to climb by 3 to 5 feet-levels substantially higher than predicted by a major scientific group just two years ago. Making matters worse, the ice shelves that hold the glaciers back from the sea are also weakening. For years, the continent at the bottom of the world seemed to be the only place on the planet not experiencing climate change. Previous research indicated that temperatures across much of Antarctica were staying the same or slightly cooling. The big surprise was exactly how much glaciers are melting in western Antarctica, a vast land mass on the Pacific Ocean side of the continent that is next to the South Pole and includes the Antarctic Peninsula. The glaciers are slipping into the sea faster because the floating ice shelf that would normally stop them—usually 650 t0980 feet thick—is melting. And the glaciers' discharge is making a significant contribution to increasing sea levels. Together, all the glaciers in west Antarctica are losing a total of around 114 billion tons per year because the melting is much greater than the new snowfall. That's equivalent to the current mass loss from the whole of the Greenland ice sheet, New research found that melting glaciers will add at least 7 inches to the world's sea level—and that's if carbon dioxide pollution is quickly capped and then reduced.
考题
单选题Prolonged and unseasonable frosts produce frost rings in deciduous trees, which grow in moderate climates. Frost rings do not appear in any of the fossilized deciduous trees that have been found in Antarctica. Hence, it is unlikely that such frosts occurred in Antarctica at the time the fossilized trees lived. Which of the following is an assumption on which the argument depends?A
There are fossilized nondeciduous trees from Antarctica that bear frost rings.B
Deciduous trees are more likely to bear frost rings than are other tree varieties.C
The process of fossilization does not completely obscure frost rings in deciduous trees.D
Present-day deciduous trees are more sensitive to changes in temperature than were the deciduous trees of ancient Antarctica.E
Prolonged and unseasonable frosts that might have occurred in Antarctica when the now-fossilized trees were still living did not always produce frost rings in deciduous trees.
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