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

游客2023-11-17  6

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] 【C4】

选项 A、thorough
B、scientific
C、individual
D、ridiculous

答案 B

解析 篇章题。上下文理解题。thorough意为“全面的,彻底的,完全的”,如:He made athorough search for his subject books.他彻底地查找了有关自己学术专业的书籍。scientific“科学(上)的,科学性的,合乎科学的”,如:scientific management科学的管理方法。individual意为“独特的,特别的,特有的”,如:Each variety of melon has itsindividual flavor and texture.每一种瓜都有自己独特的味道和口感。ridiculous意为“可笑的,滑稽的,荒谬的”,如:He eventook that ridiculous suggestion.他甚至采纳了那个可笑的建议。既然前面交待了温室气体对气候的影响不是通过常用的观察而得,那么这个结论的可信度有可能受到质疑,因此,非常有必要指出这个结论的来源具有科学合理性,因此,选项scientific为最佳答案。thorough(全面的,彻底的)也说得通,但没有“符合科学”更具说服力。individual(独特的)在表可信度上没有说服力,而ridiculous更是表对这种来源的否定态度,与题意相抵触。
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