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A greenhouse is a building made of glass which is used for keeping plants warm when the outside temperature is low. In a similar
A greenhouse is a building made of glass which is used for keeping plants warm when the outside temperature is low. In a similar
admin
2016-03-05
56
问题
A greenhouse is a building made of glass which is used for keeping plants warm when the outside temperature is low. In a similar way there are several gases in the atmosphere which trap the heat produced by the sun and prevent it from escaping. These gases are known as "greenhouse gases", and the way in which they trap heat in the atmosphere is called the "greenhouse effect". This is not simply air pollution. Most of the main greenhouse gases exist naturally in small amounts in our atmosphere, and without them the earth would be 30 degrees colder and human life would not exist. In other words, the greenhouse effect is a natural course which is to some degree helpful to us.
The problem is that in the last century and a half, we have been putting too many of these gases into the earth’s atmosphere by burning large quantities of coal and oil and by cutting down forests. The rapid increase in the greenhouse gases is making the world warmer. The world’s temperature has already gone up by half a degree this century, and the sea level has risen by 10 centimeters. If the amount of carbon dioxide in the atmosphere doubles there will be a rise in the earth’s temperature of between 1 and 4. This may seem a small increase, but it would be enough to cause major changes in geography and agriculture. Large areas of the world would be flooded, and some areas would become dry and unable to produce crops. It is important, too, to consider that there may be a delay of about 30 years in the greenhouse effect. This means that we are probably experiencing only now the effect of the gases put into the atmosphere before the 1960s. Since then, these gases have greatly increased.
Which of the following is NOT true?
选项
A、Burning too much coal and oil produces lots of greenhouse gases
B、It has become warmer on the earth now than in the past
C、Gases put into the atmosphere now will effect the earth years later
D、The temperature in a greenhouse is as high as that in the atmosphere
答案
D
解析
排除法。根据第二段第一句we have been putting too many of these gases into theearth’s atmosphere by burning large quantities of coal and oil…可知A不是正确答案;根据第二段第二句The rapid increase in the greenhouse gases is making the world warmer.可知B不是正确答案;根据第二段倒数第四行最后It is important,too,to consider that there may be a delay of about30 years in the greenhouse effect.可知C不是正确答案。故D是正确答案,温室里的温度明显比室外高。
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英语题库普高专升本分类
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英语
普高专升本
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