2. 外语
  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
【C9】
选项
答案H
解析 空格处前面为名词scientists，空格后为that引导的从句，所以空格处需要填入动词，作该句谓语。本句中提到气温的变化是无规律的，是科学家的一种观点或主张。由此确定动词maintain为本题答案，意思为“主张”。在备选的动词中，contributing，ranging和melted都已被选过，可以排除；persist和shock均与句意不符，也可以排除。
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