A Sunshade for the Planet
Even with the best will1 in the world,reducing our carbon emissions is not going to prevent global warming.It has become clear that even if we take the most strong measures to control emissions,the uncertainties in our climate models still leaye open the possibility of extreme warming and rises in sea level.At the same time,resistance by governments and special interest groups makes it quite possible that the actions suggested by climate scientists might not be implemented soon enough.
Basically the idea is to apply sunscreen to the whole planet.One astronomer has come up with a radical plan to cool Earth;launch trillions of feather-light discs into space,where they would form a vast cloud that would block the suns rays.Its controversial,but recent studies suggest there are ways to deflect just enough of the sunlight reaching the Earths surface to counteract the warming produced by the greenhouse effect.Global climate models show that blocking just 1.8 per cent of the incident energy in the suns rays would cancel out the warming effects produced by a doubling of greenhouse gases in the atmosphere. That could be crucial,because even the most severe emissions-control measures being proposed would leave us with a doubling of carbon dioxide by the end of this century,and that would last for at least a century more.
1. According to the first two paragraphs,the author thinks that
B to reduce carbon emissions is all impossible mission.
D actions suggested by scientists will never be realized.
A know what they are doing.
C think the problem has been solved.
3. What does Stephen Schneider say about a heroin addict and methadone?
B Methadone is not a correct way to treat a heroin addict.
D Methadone and heroin are equally effective in treating a heroin addict.
A To ask governments to take stronger measures;
C To apply sunscreen to the Earth.
5. What is NOT true of the effectiveness of sunscreen,according to the last paragraph?
B It blocks the incident energy in the suns rays.
D It decreases greenhouse gases in the atmosphere.
1. C 2. C 3. A 4. C 5. D
雅思写作必背加分句型34个
雅思写作高分模板:观点选择类
雅思写作高分范文:job change
雅思大作文高频题目:生活方式
雅思流程图写作常见动词集锦
雅思大作文论点分析:肉体和灵魂
雅思图表作文写作:百分比的表达方式
雅思写作范文:自私的现代人
雅思写作范文:Education Losing Its Value
雅思写作审题方法:从不同角度分析
雅思写作的五类高频句型
雅思写作范文:女人参军
雅思高分作文三部曲
雅思学术类大作文题库:环境类
10句雅思写作模板句型
雅思大作文写作必备句式
G类雅思小作文范文:咨询信
雅思写作评分标准里的4把金钥匙
探悉学术性雅思写作评分标准
雅思写作常用词汇-媒体
26个国外雅思写作真题
雅思写作词汇:31个摄影词汇
雅思大作文高频题目:社会文化和价值观
雅思写作常用词汇-国际化与发展
G类雅思投诉信写作:服务不周话题分析
12月17日雅思大作文范文
雅思写作实用技巧:连接词
雅思大作文论点分析:科技和经济
雅思写作:it作动名词的形式主语
雅思写作范文:computer and modern education
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |