2. 职称英语
  3. The warming of the Earth【C1】______over the last 100 years will be due to a c

The warming of the Earth【C1】______over the last 100 years will be due to a c

游客2023-11-17  14
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. [br] 【C3】
选项 A、However
B、Furthermore
C、Therefore
D、Besides
答案 A
解析 篇章题。上下文理解题。文章一开始就交待了经过“观察”发现了一些情况。而此处说唯一起决定作用的“温室气体”却不是通过观察而得，因此，这里应为转折关系。四个选项中，只有however表转折。意为“然而”。如：These boots are expensive：howev-er，they’re worth it．这双靴子很贵，却很值。可见，however符合题意，为正确答案。fur-thermore意为“进一步地，此外，而且”，如：He said that he could not find it and．further-more，that nobody would ever find it．他说他找不到它，而且也没有人会找到它。文章此处没有这个含义。therefore表结果，意为“所以”，如：He had something urgent，and therefore could not come．他有急事，所以未能来。本句和上句没有因果关系。besides表“除……之外，还”，如：She hasfive other apartments besides this one．除这个公寓以外，她还有别的五处公寓。可见也不合题意。
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