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1、高二英语阅读理解(科普环保)技巧小结及练习题一、高中英语阅读理解科普环保类1犇犇阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。 Against the supposition that forest fires in Alaska, Canada and Siberia warm the climate, scientists have discovered that cooling may occur in areas where burnt trees allow more snow to mirror more sunlight into space. This fi
2、nding suggests that taking steps to prevent northern forest to limit the release of greenhouse gases may warm the climate in northern regions. Usually large fires destroyed forests in these areas over the past decade. Scientists predict that with climate warming, fires may occur more frequently over
3、 next several centuries as a result of a longer fire season. Sunlight taken in by the earth tends to cause warming, while heat mirrored back into space tends to cause cooling. This is the first study to analyze all aspects of how northern fires influence climate. Earlier studies by other scientists
4、have suggested that fire in northern regions speed up climate warming because greenhouse gases from burning trees and plants are released into the atmosphere and thus trap heat. Scientists found that right after the fire, large amounts of greenhouse gases entered the atmosphere and caused warming. O
5、zone (臭氧) levels increased, and ash from the fire fell on far-off sea ice, darkening the surface and causing more radiation from the sun to be taken in. The following spring, however, the land within the area of the fire was brighter than before the fire, because fewer trees covered the ground. Snow
6、 on the ground mirrored more sunlight back into space, leading to cooling. We need to find out all possible ways to reduce the growth of greenhouse gases in the atmosphere. Scientists tracked the change in amount of radiation entering and leaving the climate system as a result of the fire, and found
7、 a measurement closely related to the global air temperature. Typically, fire in northern regions occurs in the same area every 80 to 150 years. Scientists, however, found that when fire occurs more frequently, more radiation is lost from the earth and cooling results. Specifically, they determined
8、when fire returns 20 years earlier than predicated, 0.5 watts per square meter of area burned are soaked up by the earth from greenhouse gases, but 0.9 watts per square meter will be sent back into space. The net effect is cooling. Watts are used to measure the rate at which energy is gained or lost
9、 from the earth.（1）According to the new findings, taking steps to prevent northern forest fires may _. A.result in a warming climateB.cause the forest fires to occur more frequentlyC.lead to a longer fire seasonD.protect the forests and the environment there（2）The following are all the immediate eff
10、ects after a forest fire EXCEPT _. A.large amounts of greenhouse gases enter the atmosphereB.the levels of ozone which is a type of oxygen increaseC.snow on the ground mirrors more sunlight back into spaceD.ashes from the fire fall on the ice surface and take in more radiation from the sun（3）Earlier
11、 studies about northern forest fires _. A.analyze all aspects of how northern fires influence climateB.indicate that forest fires will pollute the atmosphereC.suggest that people should take measures to protect the environmentD.suggest that the fires will speed up climate warming（4）The underlined ph
12、rase soak up in the last paragraph most probably means _. A.releasedB.absorbedC.createdD.distributed（5）From the passage we can draw a conclusion that forest fires in Alaska, Canada and Siberia may _. A.warm the climate as the supposition goesB.allow more snow to reflect more sunlight into space and
13、thus cool the climateC.destroy large areas of forests and pollute the far-off sea iceD.help to gain more energy rather than release more energy【答案】 （1）A（2）C（3）D（4）B（5）B 【解析】【分析】本文是一篇说明文，介绍了阿拉斯加、加拿大和西伯利亚的森林大火使气候变暖，科学家们已经发现，在燃烧的树木允许更多的雪将更多的阳光反射到太空的地区可能会发生冷却。 （1）考查细节理解。根据第二段中的“This finding suggests tha
14、t taking steps to prevent northern forest fires to limit the release of greenhouse gases may warm the climate in northern regions”这样的措施最终导致了北部地区的气候变暖。故选A。 （2）考查推理判断。根据第四段中的“The following spring, however, the land within the area of the fire was brighter than before the fire, because fewer trees cove
15、red the ground. Snow on the ground mirrored more sunlight back into space, leading to cooling.”可知地上的雪反射阳光这是大火的间接的影响，是在第二年春天的时候发生的事情，并不是immediate effects。故选C。 （3）考查细节理解。根据第三段中的“Earlier studies by other scientists have suggested that fire in northern regions speed up climate warming because greenhouse gases from burning trees and plants are released into the atmosphere and thus trap heat.”可知早期关于北方森林火灾的研究建议大火将加速气候变暖，故选D。 （4）考查推理判断。根据最后一段中的“0.5 watts per square m
