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  22
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] 【C10】
选项 A、within
B、in
C、inside
D、with
答案 A
解析 词汇题。词义辨析题。within表示“在确定的范围或程度内”，可指时间、距离等的限制范围，如：You’d better live within yourincome．你最好量人为出。这里的income就是一个限制范围，within your income含义为不能超过这个范围。本句的含义为“0．5 degrees之内”，within符合此意。因此，为正确答案。in可用于表示时间，意为“在……期间，在……之后”，如：in all mylife在我一生中／I’ll see you again in fivedays．五天后我再见你。inside做介词时表示“在……里面，在……之内”，指空间位置；也可用于表时间“在……结束前”，如：Iwill return inside a month．我一个月之内回来。with做介词时用法很多，但与in和inside一样都不能用于表程度高低范围，因此，此三项均不合题意。
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