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  3. Although some skeptics points to Arctic places such as the high latitudes of

Although some skeptics points to Arctic places such as the high latitudes of

游客2024-01-10  26
问题     Although some skeptics points to Arctic places such as the high latitudes of Greenland, where temperatures seem to have fallen, a recent scientific report concludes that in recent decades average temperatures have increased faster in the Arctic than elsewhere. Scientists have long suspected that several factors lead to greater temperature swings at Earth’s polar regions than elsewhere. First, most of the Arctic is covered in snow and ice, which are highly reflective; if snow and ice melt, the exposed soil, which absorbs heat, serves to accelerate warming. Second, the polar atmosphere is thin, so little energy is required to warm it. Third, less solar energy is lost in evaporation at the frigid poles than in the tropics. [br] The passage mentions which of the following as factors that might lead to large temperature swings in Earth’s polar regions?
选项 A、The amount of energy lost due to evaporation at the poles
B、Soil exposure due to melting snow
C、The relatively thin atmosphere at the poles
答案 A,B,C
解析 本题问两极地区温度波动的原因，因此定位到三四五句。A项对应原因三。B项对应原因一。C项对应原因二。
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