您的位置:外语教育网 > 职称英语 > 试题中心 > 模拟试题 > 正文

2015年职称英语理工类概括大意模拟习题及答案(2)

2015-03-09 16:10   来源:外语教育网整理       我要纠错 | 打印 | 收藏 | | |

1 New research from NASA scientists suggests emissions of black soot alter the way sunlight reflects off snow. According to a computer simulation,black soot may be responsible for 25 percent of observed global warming over the past century.

2 Soot in the higher latitudes of the Earth,where ice is more common,absorbs more of the sun's energy and warmth than an icy,white background. Dark-colored black carbon,or soot,absorbs sunlight,while lighter colored ice reflects sunlight.

3 Soot in areas with snow and ice may play an important role in climate change. Also,if snow and ice covered areas begin melting,the warming effect increases,as the soot becomes more concentrated on the snow surface. "This provides a positive feedback,as glaciers and ice sheets melt,they tend to get even dirtier,said Dr. James Hansen,a researcher at NASA's Goddard Institute for Space Studies,New York.

4 Hansen found soot's effect on snow albedo(solar energy reflected back to space),which1 may be contributing to trends toward early springs in the Northern Hemisphere,such as thinning Arctic sea ice,melting glaciers and permafrost. Soot also is believed to play a role in changes in the atmosphere above the oceans and land.

5 "Black carbon reduces the amount of energy reflected by snow back into space,thus heating the snow surface more than if there were no black carbon2," Hansen said. Soot's increased absorption of solar energy is especially effective in warming the world’s climate. "This forcing is unusually effective,causing twice as much global wanning as a carbon-dioxide forcing of the same magnitude,Hansen noted.

6 Hansen cautioned,although the role of soot in altering global climate is substantial,it does not alter the fact that greenhouse gases are the primary cause of climate warming during the past century.3 Such gases are expected to be the largest climate forcing for the rest4 of this century.

7 The researchers found that observed warming in the Northern Hemisphere was large in the winter and spring at middle and high latitudes. These observations were consistent with the researchers' climate model simulations,which showed some of the largest warming effects occurred when there were heavy snow cover5 and sufficient sunlight.

练习:

1.Paragraph 3 ________

2.Paragraph 4 ________

3.Paragraph 6 ________

4.Paragraph 7 ________

A Soot's Role in Changes in the Climate and the Atmosphere

B Observations of Warming in the Northern Hemisphere

C Explanation of Increased Warming Effect Caused by Soot

D Effort to Reduce Snow Albedo

E Ways to Reduce Soot Emission

F Greenhouse Gases as the Main Factor of Global Warming

5.In the twentieth century,soot ________.

6.Hansen cautioned that greenhouse gases ________.

7.Black soot covered snow and ice ________.

8.A soot forcing is unusually effective,which ________.

A produces much more global wanning than a carbon-dioxide forcing of the same magnitude

B continued to 25 percent of observed global warming

C can produce greenhouse gases

D absorb more of sun's energy and warmth than white background

E still surpass soot in warming the world's climate during the last centry

F can be seen mostly in the Northern Hemisphere

答案与题解:

1.C 第三段解释了为什么soot会增加地球升温效应。

2.A 第四段介绍了soot在两方面起的作用:(1)soot增加了雪吸收太阳能量和热量的能力;(2)soot导致海洋和陆地上空的大气层发生变化。

3.F 第六段的关键句子是:"…… greenhouse gases are the primary cause of climate warming during the past century."

4.B 第七段介绍了在研究北半球的纬度、雪覆盖面和日照诸因素与气温升高之间的关系方面取得的成果。

5.B 选择B的依据是第一段。有关的句子是:"…… black soot may be responsible for 25 percent of observed global warming over the past century."选项B中用了过去式contributed,也是选B的一个线索,因为第五题的题干中有in the twentieth century,这个时间状语要求谓语动词用过去式,而4个选项中只有B项的动词用的是过去式。

6.E Hansen cautioned和greenhouse gases仅出现在第六段。该段的大意是:虽然煤烟在改变全球气候方面所起的作用相当显著,但是上个世纪气温上升的主要因素还是温室气体。选项E概括了第六段的意思。

7.D 本题答案的依据是第二段第一句。

8.A 本题答案的依据是第五段的下列句子:Soot's increased absorption of solar energy is especially effective in warming the world’s climate. "This forcing is unusually effective,causing twice as much global warming as a carbon-dioxide forcing of the same magnitude," Hansen noted.

我要纠错】 责任编辑:慧
相关资讯:
网站导航:
 四六级 指南 动态 经验 试题 资料  托福 指南 动态 考情 经验 复习
 雅思 指南 动态 机经 备考 留学  公共英语 指南 动态 备考 试题 辅导
 日语 指南 资讯 辅导 留学 考试  法语 发音 词汇 语法 听说 阅读
 韩语 入门 口语 阅读 留学 文化  西语 口语 词汇 阅读 留学 风采

网校介绍

更多>>
a>

外语教育网(www.for68.com)是北京东大正保科技有限公司(CDEL)旗下一家大型外语远程教育网站,正保科技成立于2005年7月,是国内超大型外语远程教育基地,上榜“北京优质教育资源榜”--“百万读者推崇的网络教育机构”。


公司凭借雄厚的师资力量、先进的网络视频多媒体课件技术、严谨细致的教学作风、灵活多样的教学方式,为学员提供完整、优化的外语课程,既打破了传统面授的诸多限制,发挥了网络教育的优势,也兼顾面授的答疑与互动特点,为我国培养了大量优秀的外语人才。


为了满足学员学习不同语种、不同阶段的学习需求,网站开设了包括考试英语、行业英语、实用口语以及小语种在内的百余门语言学习课程,涵盖英语、日语、韩语、俄语、德语、法语、西班牙语、意大利语、阿拉伯语等主要语种,供学员自由选择。此外,网站还拥有各类外语专业信息和考试信息20余万条,是广大学员了解外语类考试最新政策、动态及参加各语种培训的优质网站。


北京东大正保科技有限公司成立于2000年,是一家具备网络教育资质、经教育部批准开展远程教育的专业公司,为北京市高新技术企业、中国十大教育集团、联合国教科文组织技术与职业教育培训在中国的唯一试点项目。


公司下属13家行业远程教育网站,业务涵盖了会计、法律、医学、建设、自考、成考、考研、中小学、外语、信息技术、汉语言教学等诸多领域,拥有办公面积8000多平米,员工近千人,公司年招生规模达270万人。由于正保远程教育(China Distance Education Holdings Ltd., CDEL)在中国互联网远程教育行业内的绝对优势和强大影响力,正保教育模式一直被广大投资人所追捧。2008年7月30日,公司在美国纽约证券交易所正式挂牌上市(股票交易代码:DL),是2008年唯一一家在美国纽交所上市的专业从事互联网远程教育的中国企业。


精彩推荐

版权声明
   1、凡本网注明 “来源:外语教育网”的所有作品,版权均属外语教育网所有,未经本网授权不得转载、链接、转贴或以其他方式使用;已经本网授权的,应在授权范围内使用,且必须注明“来源:外语教育网”。违反上述声明者,本网将追究其法律责任。
  2、本网部分资料为网上搜集转载,均尽力标明作者和出处。对于本网刊载作品涉及版权等问题的,请作者与本网站联系,本网站核实确认后会尽快予以处理。
  本网转载之作品,并不意味着认同该作品的观点或真实性。如其他媒体、网站或个人转载使用,请与著作权人联系,并自负法律责任。
  3、本网站欢迎积极投稿
  4、联系方式:
编辑信箱:for68@chinaacc.com
电话:010-82319999-2371