Bussiness ManagementMBAstrategyHuman ResourceMarketingHospitalityE-commerceInternational Tradingproject managementmedia managementLogisticsFinanceAccountingadvertisingLawBusiness LawEducationEconomicsBusiness Reportbusiness planresearch proposal
英语论文题目英语教学英语论文商务英语英语论文格式商务英语翻译广告英语商务英语商务英语教学英语翻译论文英美文学英语语言学文化交流中西方文化差异英语论文范文英语论文开题报告初中英语教学英语论文文献综述英语论文参考文献
ResumeRecommendation LetterMotivation LetterPSapplication letterMBA essayBusiness Letteradmission letter Offer letter
澳大利亚论文英国论文加拿大论文芬兰论文瑞典论文澳洲论文新西兰论文法国论文香港论文挪威论文美国论文泰国论文马来西亚论文台湾论文新加坡论文荷兰论文南非论文西班牙论文爱尔兰论文
小学英语教学初中英语教学英语语法高中英语教学大学英语教学听力口语英语阅读英语词汇学英语素质教育英语教育毕业英语教学法
英语论文开题报告英语毕业论文写作指导英语论文写作笔记handbook英语论文提纲英语论文参考文献英语论文文献综述Research Proposal代写留学论文代写留学作业代写Essay论文英语摘要英语论文任务书英语论文格式专业名词turnitin抄袭检查
temcet听力雅思考试托福考试GMATGRE职称英语理工卫生职称英语综合职称英语职称英语
经贸英语论文题目旅游英语论文题目大学英语论文题目中学英语论文题目小学英语论文题目英语文学论文题目英语教学论文题目英语语言学论文题目委婉语论文题目商务英语论文题目最新英语论文题目英语翻译论文题目英语跨文化论文题目
日本文学日本语言学商务日语日本历史日本经济怎样写日语论文日语论文写作格式日语教学日本社会文化日语开题报告日语论文选题
职称英语理工完形填空历年试题模拟试题补全短文概括大意词汇指导阅读理解例题习题卫生职称英语词汇指导完形填空概括大意历年试题阅读理解补全短文模拟试题例题习题综合职称英语完形填空历年试题模拟试题例题习题词汇指导阅读理解补全短文概括大意
论文作者:英语论文论文属性:考试题 Examination登出时间:2012-05-04编辑:walter点击率:3580
论文字数:2701论文编号:org201205041450192763语种:中文 Chinese地区:中国价格:免费论文
摘要:2013年职称英语理工类模拟题及答案—阅读判断(12),提供英语职称论文发表/代写代发/评定/申请发表等。
Greenhouse Effect
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 generated 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 like photochemical smog (光化学烟雾), for example. Most of the main greenhouse gases occur naturally in small amounts in our atmosphere, and without them the earth would be thirty degrees colder and human life would not exist. In other words, the greenhouse effect is a natural process which is to some extent beneficial to us.
The problem is that in the last century and a half, we have been putting excessive amounts of these gases into the earth's atmosphere by burning large quantities of coal and oil and by cutting down forests. In 1850, there were 280 parts per million of carbon dioxide (二氧化碳) in the atmosphere. Now there are 360, and this figure is expected to rise to 460 by the year 2030. We now put 24 billion metric (公制的) tons of carbon dioxide into the atmosphere every year. We have also created a group of artificial greenhouse gases that are 20,000 times more effective than carbon dioxide in trapping heat in the atmosphere. These are the chlorofluorocarbon (氟氯碳) gases, which are used in refrigerators and air conditioning systems.
The rapid increase in 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 ten centimeters. If the amount of carbon dioxide in the atmosphere doubles, there will probably 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 regions would become dry and unable to produce crops. It is important, too, to consider that there maybe a delay of about thirty years in the greenhouse effect. This means that we are probably experiencing only now the effect of the gases put into the atmosphere up to the 1960s. Since then, our use of these gases has greatly increased.
41 According to the passage, a greenhouse is built to
A keep the plants warm.
B prevent air pollution.
C stop the greenhouse effect.
D produce useful gases.
42 Without the greenhouse gases, the earth would
A become warmer.
B be much colder.
C move more slowly.
D move quickly.
43 A major cause of the increase in the greenhouse gases is
A the burning of trees and crops.
B the building of many greenhouses.
C the burning of large quantities Of coal and oil.
D the flooding of large areas of the world.
44 According to the passage, chlorofluorocarbon gases differ from carbon dioxide in that
A they are more useful.
B they are much heavier.
C they are more efficient in making the' world colder.
D they are more effective in catching the heat from the sun.
45 A small increase in the earth's temperature may bring about
A a decline in agriculture.
B a drop of the sea level.
C the death of all animals.
D a delay in the greenhouse effect
【参考答案】
41. A 42. B 43. C 44. D 45. A