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  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] 【C19】
选项 A、appears
B、realizes
C、proves
D、shows
答案 A
解析 篇章题。上下文理解题。appears“似乎，显得”，如：It appeared that everyone knew it．似乎每个人都知道这事。realize“认识，了解”。如：He realized that the accident wascaused by heavy fog．他认识到事故是由大雾引起的。prove意为“显示出……，证明是……”，如：It proved that the theory wasimpractical in practice．这证明了这个理论在实践中不实用。show可表示“表明”，指通过某人行为或状况揭示(本身)，如：Itshowed that the old boat was seaworthy．这表明这艘旧船是经得起风浪的。根据上下文，此句是对上一句提出的问题做出的回答之一，因此，如果答案太过绝对，后面一个回答可能就意义不大；另外，本句首的insome cases也显示了此回答的局限性。因此，选项appears为最佳答案，表示“不太确切，不太可靠的估计”。而其他几个选项，所表含义都更为肯定，不合上下文含义。
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