2. 外语
  3. The warming of the Earth【C1】______over the last 100 years will be due to a combination of many factors. Warming due to the incre

The warming of the Earth【C1】______over the last 100 years will be due to a combination of many factors. Warming due to the incre

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问题     The warming of the Earth【C1】______over the last 100 years will be due to a combination of many factors. Warming due to the increase in greenhouse gases【C2】______determined so far. 【C3】______, projections of greenhouse warming do not rest on recent observations, they come from【C4】______understanding of the climate system. A【C5】______of simple and complex computer models【C6】______over the last 30 years to put together knowledge of many climate processes.
    【C7】______to some scientific opinion, current models do a reasonable job of【C8】______today’s climate. The difference between summer and winter temperatures, in【C9】______to change in heating from the Sun, is correctly stimulated to【C10】______about 0.5 degrees over much of the planet.【C11】______events provide additional tests of our understanding. For example, the scale and【C12】______of cooling due to the eruption of Mt. Pinatubo were【C13】______by climate models.
    When greenhouse gases are increased in climate models, the response is always an increase in average temperatures and water vapor. Models【C14】______in their result but, in virtually all【C15】______, doubling the amount of carbon dioxide increase global average temperatures【C16】______between 1. 5℃ and 4℃. Why are there some dissenting【C17】______heard on the science of climate change?【C18】______it【C19】______that critics are simply unaware of the depth of the science developed so far.
    Others are concerned【C20】______we do not understand everything about the climate system.
【C18】
选项 A、In some cases
B、In any case
C、In no case
D、In case of
答案A
解析 词汇题。固定搭配词组的词义辨析。insome cases表示“在某些情况下”，如：Jobsare hard to find in some cases．在一些情况下，工作很难找。本句是回答上句提出的问题，指出一种可能性；后一句(也是下一段)指出另一种情况。因此，此句表示部分情况，可见，本选项符合题意，为正确答案。inany case意为“无论如何”，如：I’ll have atry in any case．无论如何我都要试一下。此选项放于本句，含义不通。in no case意为“决不”，用于句首时须用倒装，如：In nocase will I do it．我决不做那事。此选项含义与用法都与本句不符。in case of意为“万一，如果发生”，of为介词，后面必须跟宾语，如：I wouldn’t normally agree but I’llmake an exception in case of emergency．一般而言我不会同意，但如果是紧急情况我会破例的。此选项用法和含义均不合题意。
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