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

admin2011-03-07  2
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.
【C7】
选项 A、Contrast
B、Contrary
C、Compared
D、Comparison
答案B
解析 篇章题。上下文理解题。选项contrary(to)表“与……相反”，如：Contrary to yoursuggestion，he did it alone．和你的建议相反，他独自做的这件事。文章后面提到dissenting voices(不同的意见)是对本句的回应，说明这种做法与以往的常规做法是不同的。因此，不论含义还是用法都与题意相符。contrast常用在in contrast to／with的结构中，表示“与……相比、对照”，如：Incontrast with his early works，the later paint—ings are brighter．与其早期作品相比，他晚期的画色彩更鲜亮。此选项在本句中用法错误。compare通常用于be compared to(把……比作)，如：Scientists sometimescompare the human brain to a computer．科学家有时将人脑比作电脑。此选项含义与题意不符。comparison为名词，意为“比较”，如：There is no comparison betweenthem．两者不可同日而语。由此可见，此含义和用法都不合本题。
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