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  3. 共用题干 第二篇Around 45%of the UK\'s carbon di

共用题干 第二篇Around 45%of the UK\'s carbon di

Freeti2019-12-17  55
问题 共用题干第二篇
Around 45%of the UK's carbon dioxide emissions come from the energy people use every day-at home and when they travel.In order to generate that energy,fossil fuels(coal oil,and gas)are burnt,and these produce greenhouse gases-in particular carbon dioxide(CO<sub>2</sub>).Car emissions are a major problem, but the truth is that more CO<sub>2</sub> comes from the energy used at home.The average household creates around
five and a half tonnes of CO<sub>2</sub> a year,and it is the same CO<sub>2</sub> that is changing the climate and damaging the environment.
CO<sub>2</sub> and various other gases wrap the earth in an invisible blanket helping to prevent heat from escaping.Without this greenhouse effect,the average temperature on Earth would be around-18℃， compared with the current average of around+15℃．The composition of this blanket of gases has remained relatively constant for many thousands of years.However,since the industrial revolution began around 200 years ago,people have been burning increasing amounts of fossil fuels,thus releasing more CO<sub>2</sub> and other greenhouse gases in the process.This has increased the heating effect of the blanket,trapping more of the sun's energy inside the Earth's atmosphere in turn the Earth's temperature has increased more rapidly in a shorter period of time than it has for thousands of years.
In 2008,the total UK CO<sub>2</sub> emissions were 533 million tonnes.27%(144 million tonnes)of those emissions came from the energy used to heat,light,and power homes.Transport emissions caused by passenger cars,buses and motorcycles accounted for a further 16%(87 million tonnes)of the UK's CO<sub>2</sub> emissions.These figures show that a significant amount of CO<sub>2</sub> results from ordinary citizens carbon footprint in their daily activities and lifestyle.
The effects of climate change can be seen all around us.Weather patterns are becoming more and more fractured and uncertain,and over the last century trends in warm weather have become increasingly common.In the UK in the last 40 years,winters have grown warmer,with much heavier rainfall.One of the clearest shifts over the last 200 years is towards summers that are hotter and drier,causing pervasive（普遍的）water shortages.Recent years have been the hottest since records began and during August 2003,the hottest ever outdoor temperature in the UK was recorded-38.5℃．
选项 What is the author's main aim?A:To explain the greenhouse effect.B:To describe the effects of climate change in the UK.C:To show how much CO<sub>2</sub> is produced by ordinary people's activities.D:To illustrate how industrial activity creates the greenhouse effect.
答案C
解析本文以英国的情况为例，主要讲述了人们在日常生活中排出大量二氧化碳气体及这种情次对地球环境的影响。文章以英国二氧化碳气体的排放来源展开论述，指出由于人们活动消耗能源，使得大气中产生大量的二氧化碳。并通过具体数据来论述人类的日常活动排放的大量二氧化碳及其对气候所产生的不良影响。故本题选C。 由文章第一段第三句和第四句话的内容可知，家庭排放的二氧化碳气体占据二氧化碳排放量的主要部分，比汽车排放的多，故选C。 由文章第三段中的内容可知，2008年，在英国有16％的二氧化碳气体来自于交通工具的排放，这和D项意思相符，故选D。 文章第四段第三句话中提到，在过去40年里，英国的冬天变得更暖，降雨也更加猛烈， A、B、D三项的内容文中均未提及，故选C。 由第36题的解析可知，文章主要围绕在英国人们日常生活所排放的大量二氧化碳气体及其对气候的影响来展开。故本题最佳答案为B。
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