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  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2024-10-19  11
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] 【C9】
选项 A、addition
B、proper
C、response
D、due
答案 C
解析 篇章题。上下文理解题。in response to意为“作为对……的反应”，如：The quick recovery was truly in response to medication．这次迅速恢复确是对药物治疗的反应(即药物治疗取得了很好的疗效)。根据上下文，此处的含义为太阳提供的热量的变化引起了气温差异，后者是对前者变化的反应；另外，下一段首句出现了response这一重要线索，句中response表相似的情况——温室气体的增加使气温等发生相应变化，因此，选项response不论用法还是含义都符合题意，为正确答案。in addition to表示“除……之外，还”，如：In addition tothis job．she has got some part-time jobs occasionally．除了这个工作以外，她偶尔还做些兼职。含义与题意不符。选项proper，没有in proper to的结构，一般用作形容词，表示“名副其实的，真的”，如：What I wantedwas a proper dinner，not just a snack．我需要的是一顿真正的晚餐，而不仅仅是点心而已。可见无论用法还是含义都不合题意。选项due，没有in due to的结构，但有due to的结构，意为“归因于，由于”，如：Itis just a mistake due to carelessness．这只是一个由于粗心而犯的错误。此处无因果关系。因此，此选项含义与用法同样都不合题意。
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