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外语
A、The unprecedented high temperature in Greenland. B、The collapse of ice on the northern tip of Greenland. C、The unusual cold sp
A、The unprecedented high temperature in Greenland. B、The collapse of ice on the northern tip of Greenland. C、The unusual cold sp
admin
2021-01-08
34
问题
During the arctic winter from October to March, the average temperature in the frozen north typically hovers around minus 20 degree Celsius. But this year the Arctic is experiencing much higher temperatures.
[9] On February the 20th the temperature in Greenland climbed above freezing or zero degree Celsius and it stayed there for over 24 hours. Then on February the 24th the temperature on Greenland’ s northern tip reached six degree Celsius. Climate scientists describe the phenomenon as stunning. [10] Weather conditions that drive this bizarre temperature surge have visited the Arctic before. They typically appear about once in a decade. However, the last such increase in temperature took place two years ago. This is troubling as climbing arctic temperatures combined with rapid sea ice loss are creating a new type of climate feedback loop which could accelerate Arctic warming. Indeed, sea ice cover in the Arctic is melting faster than expected. Without those masses of cooling sea ice, warm air brought to the Arctic can penetrate further inland than it ever did before. The air can stay warmer longer too. This drives additional melting.
Overall, earth is warming at a rapid pace. 2014 through 2017 ranks the hottest years on record and the Arctic is warming twice as fast as any place else on earth. This raises unique challenges for Arctic wildlife and indigenous people who depend on Arctic ecosystems to survive. Previously climate forecasts predicted that Arctic summer ice would disappear entirely by around 2060, [11] but based on what scientists are seeing now, the Arctic may be facing summers without ice within 20 years.
Questions 9 to 11 are based on the passage you have just heard.
9. What did climate scientists describe as stunning?
10. What does the passage say about the temperature surge in the Arctic?
11. What may occur in 20 years according to scientists’ recent observations?
选项
A、The unprecedented high temperature in Greenland.
B、The collapse of ice on the northern tip of Greenland.
C、The unusual cold spell in the Arctic area in October.
D、The rapid change of Arctic temperature within a day.
答案
A
解析
题干问的是气象学家描述的令人震惊的现象是什么。短文开头提到,在2月20日,格陵兰岛的气温上升到冰点或零度以上,并保持这个温度范围超过了24小时。然后在2月24日,格陵兰岛北端的温度达到6摄氏度,气候学家说这一现象令人震惊,故答案为A(格陵兰岛空前的高温)。B项(格陵兰岛北端冰山的融化)、C项(北极10月份不同寻常的寒冷期)和D项(一天内北极气温的快速变化)均与短文内容不符,故排除。
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0
大学英语六级
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