Rising sea levels and drought caused by global warming could an increasing number of natural disasters.
| A．try out | B．come about | C．result in | D．get into |
高二英语单项填空简单题
Rising sea levels and drought caused by global warming could an increasing number of natural disasters.
| A．try out | B．come about | C．result in | D．get into |
高二英语单项填空简单题查看答案及解析
Antarctica(南极洲)’s melting ice, which has caused global sea levels to rise by at least 13.8 millimeters over the past 40 years, was thought to primarily come from the unstable West Antarctic Ice Sheet(WAIS). Now, scientists have found that the East Antarctic Ice Sheet (EAIS)—considered largely unaffected by climate change—may also be melting at an unexpectedly rapid speed.
The WAIS, whose base is below sea level, has long been considered the most likely to break down. Besides gravity, a deep current of warm water slips beneath the sheet, melting it from below until it becomes a floating shelf at risk of breaking away. In contrast, extreme cold and a base mostly above sea level are thought to keep the EAIS relatively safe from warm waters.
But as greenhouse gases warm much of the planet, driving stronger polar winds, some scientists think warm water carried by a circular current will start to invade East Antarctica’s once unassailable ice. A cooperation of more than 60 scientists last year, published in Nature, estimated that the EAIS actually added about 5 billion tons of ice each year from 1992 to 2017.
Eric Rignot of the University of California, Irvine, and colleagues combined 40 years of satellite imagery and climate modeling and found that overall Antarctica now sends six times more ice into the sea each year than it did in 1979, with the majority coming from West Antarctica. But East Antarctica was responsible for more than 30% of Antarctica’s contribution to the 13.8-millimeter sea level rise over the past 40 years. “The more we look at this system the more we realize this is fragile,” Rignot says. “Once these glaciers become unstable there is no red button to press to stop it.”
Rignot hopes the study brings greater attention to a part of Antarctica that has traditionally been understudied. Helen Fricker, a glaciologist (冰川学家) in California, agrees. “We need to monitor the entire Antarctica and we just can’t do that without international cooperation.”
1.What is the new finding of scientists?
A.The east Antarctica is losing ice at an increasing rate.
B.The west Antarctica is melting six times faster than in 1979.
C.5 billion tons of ice is added to Antarctica each year.
D.The sea level has risen by 13.8 mm over the past 40 years.
2.Which factor leads to the EAIS’s melting fast?
A.A base mostly over sea level. B.The force of gravity.
C.The invasion of a warm current. D.Extremely low temperature.
3.Which of the following best explains “unassailable” underlined in Para. 3 ?
A.Fragile. B.Unattackable.
C.Mild. D.Unstable.
4.Which way does Helen Fricker specially advocate?
A.Satellite imagery. B.Global monitoring.
C.Worldwide climate modeling. D.Worldwide combined efforts.
高二英语阅读理解困难题查看答案及解析
Antarctica(南极洲)’s melting ice, which has caused global sea levels to rise by at least 13.8 millimeters over the past 40 years, was thought to primarily come from the unstable West Antarctic Ice Sheet(WAIS). Now, scientists have found that the East Antarctic Ice Sheet (EAIS)—considered largely unaffected by climate change—may also be melting at an unexpectedly rapid speed.
The WAIS, whose base is below sea level, has long been considered the most likely to break down. Besides gravity, a deep current of warm water slips beneath the sheet, melting it from below until it becomes a floating shelf at risk of breaking away. In contrast, extreme cold and a base mostly above sea level are thought to keep the EAIS relatively safe from warm waters.
But as greenhouse gases warm much of the planet, driving stronger polar winds, some scientists think warm water carried by a circular current will start to invade East Antarctica’s once unassailable ice. A cooperation of more than 60 scientists last year, published in Nature, estimated that the EAIS actually added about 5 billion tons of ice each year from 1992 to 2017.
Eric Rignot of the University of California, Irvine, and colleagues combined 40 years of satellite imagery and climate modeling and found that overall Antarctica now sends six times more ice into the sea each year than it did in 1979, with the majority coming from West Antarctica. But East Antarctica was responsible for more than 30% of Antarctica’s contribution to the 13.8-millimeter sea level rise over the past 40 years. “The more we look at this system the more we realize this is fragile,” Rignot says. “Once these glaciers become unstable there is no red button to press to stop it.”
Rignot hopes the study brings greater attention to a part of Antarctica that has traditionally been understudied. Helen Fricker, a glaciologist (冰川学家) in California, agrees. “We need to monitor the entire Antarctica and we just can’t do that without international cooperation.”
1.What is the new finding of scientists?
A. The east Antarctica is losing ice at an increasing rate.
B. The west Antarctica is melting six times faster than in 1979.
C. 5 billion tons of ice is added to Antarctica each year.
D. The sea level has risen by 13.8 mm over the past 40 years.
2.Which factor leads to the EAIS’s melting fast?
A. A base mostly over sea level. B. The force of gravity.
C. The invasion of a warm current. D. Extremely low temperature.
3.Which of the following best explains “unassailable” underlined in Para. 3 ?
A. Fragile. B. Unattackable.
C. Mild. D. Unstable.
4.Which way does Helen Fricker specially advocate?
A. Satellite imagery. B. Global monitoring.
C. Worldwide climate modeling. D. Worldwide combined efforts.
高二英语阅读理解困难题查看答案及解析
The problem of global warming is serious. ______, the sea levels have risen a little.
A. As a result B. On the contrary
C. In particular D. In other words
高二英语单项填空简单题查看答案及解析
The problem of global warming is serious. ______, the sea levels have risen a little.
A. As a result B. On the contrary C. In particular D. In other words
高二英语单项填空简单题查看答案及解析
Over the past l00 years，sea level________steadily as a result of global warming．
A．had increased B．has been increasing C．increased D．is increasing
高二英语单项填空简单题查看答案及解析
Rising levels of carbon dioxide in the atmosphere are a major cause of climate change, and now a new study has confirmed that atmospheric CO2 is also affecting the ocean chemistry and potentially harming sea life.
Montana State University scientist Robert Dore has been researching the water in the Pacific Ocean for almost two decades. “We've been going to the same spot in the Pacific Ocean, and we try and characterize longterm change in the open ocean environment. And one of the key things that we measure is CO2 levels. And we've been able to record this increasing quantity of atmospheric CO2 into the ocean.”
Scientists expected that as atmospheric CO2 increased, more and more of the carbon dioxide would be absorbed into the ocean, affecting the chemical balance of the sea water, with a potentially harmful impact on shellfish and coral in particular.
“As carbon dioxide dissolves in the water, or seawater in this case, it forms a weak acid, carbonic acid，” Dore explains. “And therefore, as the concentration of CO2 in the atmosphere goes up and that exchanges with the surface seawater, it drives the PH down, and makes it more acidic.”
The seawater samples Dore and his colleagues have analyzed confirm what the theory predicts.
The effect was particular striking at about 250 meters down, and again at 500 meters. Dore and his colleagues came up with two possible explanations. It could be that surface water picked up CO2 and then moved to those depths. Or there could be a biological explanation.
“It's important to realize that the oceans are really becoming acidic. And it can have negative impacts on a whole variety of sea life from fish to coral. It's potentially catastrophic.”
1.What can be the best title of the passage?
A．Climate Change Affecting Seawater
B．Oceans Becoming More Acidic
C．Sea Life Facing Danger
D．Scientist Researching Seawater
2.With the increase of atmospheric CO2，________.
A．the surface water is becoming warmer
B．more corals will appear in the sea
C．the PH of the ocean out here has been increasing
D．the chemical balance of the seawater is affected
3.Which of the following shows the process of the impact of atmospheric CO2 on sea life?
a．Sea life is endangered.
b．CO2 goes into the surface water.
c．The ocean chemistry is affected.
d．CO2 decreases the PH and makes the seawater more acidic.
e. CO2 levels in the atmosphere go up.
A．a→e→b→c→d B．e→d→c→b→a
C．e→b→c→d→a D．a→b→c→d→e
高二英语阅读理解中等难度题查看答案及解析
Rising levels of carbon dioxide in the atmosphere are a major cause of climate change, and now a new study has confirmed that atmosphere CO2 is also affecting the ocean chemistry and potentially harming sea life.
Montana State University scientist Robert Dore has been researching the water in the Pacific Ocean for almost two decades. “We’ve been going to the same spot in the Pacific Ocean, and we try and characterize long-term change in the open ocean environment. And one of the key things that we measure is CO2 levels. And we’ve been able to record this increasing quantity of atmosphere CO2 into the ocean.”
Scientists expected that as atmosphere CO2 increased, more and more of the carbon dioxide would be absorbed into the ocean, affecting the chemical balance of the sea water, with a potentially harmful impact on shellfish and coral in particular.
“As carbon dioxide dissolves in the water or seawater in this case, it forms a weak acid, carbonic acid,” Dore explains. “And therefore, as the concentration of CO2 in the atmosphere goes up and that exchanges with the surface seawater, it drives the pH down, and makes it more acidic.”
The seawater samples Dore and his colleagues have analyzed confirm what the theory predicts.
The effect was particular striking at about 250 meters down, and again at 500 meters. Dore and his colleagues came up with two possible explanations. It could be that surface water picked up CO2 and then moved to those depths. Or there could be a biological explanation.
“It’s important to realize that the oceans are really becoming acidic. And it can have negative impacts on a whole variety of sea life from fish to coral. It’s potentially catastrophic.”
1.What can be the best title of the passage?
A. Scientist Researching Seawater
B. Sea Life Facing Danger
C. Oceans Becoming More Acidic
D. Climate Change Affecting Seawater
2.With the increase of atmospheric CO2, _______.
A. more corals will appear in the sea
B. the chemical balance of the seawater is affected
C. the surface water is becoming warmer
D. the pH of the ocean out here has been increasing
3.Which of the following shows the process of the impact of atmospheric CO2 on sea life?
a. Sea life is endangered.
b. CO2 goes into the surface water.
c. The ocean chemistry is affected.
d. CO2 decreases the pH and makes the seawater more acidic.
e. CO2 levels in the atmosphere go up.
A. a→b→c→d→e B. e→b→c→d→a
C. a→e→b→c→d D. e→d→c→b→a
4.Scientist Robert Dore came to the conclusion based on_______.
A. the expectation of other scientists
B. some former theory
C. his research and analysis
D. a major cause of climate change
高二英语阅读理解中等难度题查看答案及解析
Global warming caused by human being’s casual behaviour has become a major _______ for people all over the world.
A．conflict B．concern C．challenge D．factor
高二英语单项填空简单题查看答案及解析
Greenhouse phenomena would cause ______ rise in sea levels worldwide and change ______ weather on the earth.
A. a; the B. the; 不填 C. a; 不填 D. 不填; the
高二英语单项填空中等难度题查看答案及解析