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"Forests are the lungs of our land," said Franklin Delano Roosevelt. Twenty years ago, the world’s lungs were diseased. Roughly
"Forests are the lungs of our land," said Franklin Delano Roosevelt. Twenty years ago, the world’s lungs were diseased. Roughly
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2023-04-06
45
问题
"Forests are the lungs of our land," said Franklin Delano Roosevelt. Twenty years ago, the world’s lungs were diseased. Roughly half of all the planet’s once-luxuriant tropical forests had been felled and the further deterioration of the Earth’s green spaces seemed【C1】________.
Over time countries【C2】________a "forest transition curve". They start in【C3】________with the land covered in trees. As they get richer, they fell the forest and the curve drops sharply until it reach-es a low point when people decide to【C4】________whatever they have left. Then the curve rises as reforestation【C5】________At almost every point along the【C6】________, countries are now doing better: deforested are【C7】________down less; reforesters are【C8】________more.
This matters to everyone because of the extraordinary【C9】________that tropical forests make to reducing carbon emissions. Trees are carbon【C10】________. If you fell and burn them, you【C11】________carbon into the atmosphere. If you let them【C12】________they store carbon away in their trunks for centuries. Despite decades of【C13】________, tropical forests are still【C14】________about a fifth of emissions from fossil fuels each year.
Encouraging countries to plant trees (or【C15】________them from logging) is by far the most【C16】________way of reducing greenhouse-gas emissions.【C17】________Brazil had kept on felling trees as rapidly as it was cutting them【C18】________in 2005, it would, by 2013, have put an extra 3.2 billion tonnes of car-bon dioxide into the atmosphere. As a way of【C19】________the environment, protecting trees is hard to beat. It is in everyone’s interest to find out which forest policies work—and【C20】________them.
【C16】
选项
A、sentimental
B、sensible
C、effective
D、useless
答案
C
解析
此处填入的形容词表示在降低温室气体排放方面,植树所能起到的作用。上文提及树能够吸收排放到大气中的碳,由此推断植树在降低温室气体排放方面是有效的。故选C项effective“有效的”。D项useless“无用的”与原文意思相反,首先排除。A项sentimental“多愁善感的”常指人的感情,不能用来修饰无生命体。用森林吸收温室气体也许是最合理的,但文中并没有线索可推断出来,故排除B项sensible“合理的”。
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0
考研英语一
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