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  3. Global warming is a trend toward warmer conditions around the world. Part of the warming is natural; we have experienced a 20,00

Global warming is a trend toward warmer conditions around the world. Part of the warming is natural; we have experienced a 20,00

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问题     Global warming is a trend toward warmer conditions around the world. Part of the warming is natural; we have experienced a 20,000-year-long warming as the last ice age ended and the ice【C1】______away. However, we have already reached temperatures that are in【C2】______with other minimum-ice periods, so continued warming is likely not natural. We are【C3】______to a predicted worldwide increase in temperatures【C4】______between 1℃ and 6℃ over the next 100 years. The warming will be more【C5】______in some areas, less in others, and some places may even cool off. Likewise, the【C6】______of this warming will be very different depending on where you are—coastal areas must worry about rising sea levels, while Siberia and northern Canada may become more habitable(宜居的)and【C7】______for humans than these areas are now.
    The fact remains, however, that it will likely get warmer, on【C8】______, everywhere. Scientists are in general agreement that the warmer conditions we have been experiencing are at least in part the result of a human-induced global warming trend. Some scientists【C9】______that the changes we are seeing fall within the range of random(无规律的)variation—some years are cold, others warm, and we have just had an unremarkable string of warm years【C10】______—but that is becoming an increasingly rare interpretation in the face of continued and increasing warm conditions.
A)appealing I)melted
B)average J)persist
C)contributing K)ranging
D)dramatic L)recently
E)frequently M)resolved
F)impact N)sensible
G)line O)shock
H)maintain
【C5】
选项
答案D
解析 空格前面为be，动词加程度副词more，由此可知空格处应填入多音节的形容词。该句表明，地区不同，气温变化也不同，后面句子讲到一些地区气温变化幅度较小，甚至会变冷，那么前半部分应该是指气温增长较快。由此确定形容词dramatic为本题答案，意思为“急剧的”。在备选形容词中，appealing，resolved和sensible都不可以修饰气候变暖，可以排除。
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大学英语四级

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