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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
admin
2011-03-07
18
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.
【C13】
选项
A、directed
B、created
C、made
D、reproduced
答案
D
解析
词汇题。词义辨析题。direct表示“管理,指导”,如:He personally directed thenation’s foreign policy.他亲自掌管国家的外交政策。此处不表计算机模型管理这种自然现象,因此,不合题意。create表示“创造,造成,引起”,指使某事或物从无到有,如:It’s bound to create trouble sooner or later.注定迟早要引起麻烦。make表示“制造,建造”,如:make a dress做衣服。计算机模型一不是用来引起(create)火山爆发的,也不是用来制造(make)火山爆发的,因此,以上两选项均不合题意。reproduce表示“复制,仿造,再造”,如:The actors reproduced the running horses by pounding pillows.演员们捶打枕头模拟奔马的声音。此处的含义为“模拟火山爆发这种自然现象所引起的冷却规模和持续时间”,可见reproduce“模拟这种现象”正合题意,为正确答案。
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专业英语四级
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