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If environmental trends in Western nations continue on a positive track, someday children may ask, "Mommy, what was pollution?"
If environmental trends in Western nations continue on a positive track, someday children may ask, "Mommy, what was pollution?"
admin
2012-07-11
80
问题
If environmental trends in Western nations continue on a positive track, someday children may ask, "Mommy, what was pollution?" But between that day and ours stands the ultimate environmental problem: global warming. Fighting an artificial greenhouse effect is the greatest of environmental challenges, because the cure will not be possible unless almost every nation on Earth participates.
In the last century, global temperatures have risen 1 degree Fahrenheit. Some scientists remain skeptical about projected future warming, but an oft-heard claim, that the idea of global warming is being promoted only by fringe fanatics (狂热者), is not true. In December 2004, Science, one of the world’s leading technical journals, declared in an essay, "Without substantial disagreement, scientists find human activities are heating Earth’s surface."
Will global warming cause harm? Some computer models suggest the world might warm by 5 degrees or more during this century, which might be dangerous. Melting polar ice could raise sea levels, while global warming might cause more intense storms and disrupt the weather patterns that bring rain to agricultural regions. Computer models are speculative, of course, but when the farming areas that we all depend upon for food rely on current temperatures, rolling the dice with the climate cannot be wise. Yet today the United States has no national legislation regulating greenhouse gases. What Can We Do Right Now?
There are methods to reduce global warming. For instance, individuals can make lifestyle changes. Replace that Godzilla-sized SUV with a regular car; an SUV that gets 14 miles to the gallon emits 100 tons of greenhouse gases over its lifetime. Check out the new hybrid (混合动力的)cars, which get 45 mpg or better. Moderate your use of home heating and air conditioning, most of which is powered by fossil fuels, and upgrade appliances to Energy Star models.
On a larger level, there is hope: emissions trading. In 1990, rising levels of acid rain were considered an emergency problem. Congress passed an emissions-trading program, which allowed industrial managers to buy and sell permits to emit a limited amount of pollutants that cause acid rain. The acid-rain trading program created a financial incentive to invent technology to reduce acid rain; if a factory or power plant cut its emissions below the limit, it could sell the extra credits at a profit. Once there was money to be made by reducing acid rain, human creativity came into play. The results were spectacular.
According to the first paragraph, fighting against greenhouse effect requires______
选项
答案
the participation of every nation on Earth
解析
空前的动词requires表明,本空应填一名词性成分作宾语。题干中的fighting against greenhouse effect 对应首段末句中的Fighting an artificial greenhouse effect,该句中的almost every nation on Earth participates为解决办法,将其改为名词性成分the participation of every nation on Earth即为答案。
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0
大学英语六级
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