- 阅读理解A
题干：Intheatmosphere,carbondioxideactsratherlikeaone-waymirrorortheglassintheroofofagreenhousewhichallowsthesun’sraystoenterbutpreventstheheatfromescaping.Accordingtoaweatherexpert’sprediction,theatmospherewillbe3°Cwarmerintheyear2050thanitistoday,ifmancontinuestoburnfuelsatthepresentrate.Ifthiswarminguptookplace,theicecapsinthepoleswouldbegintomelt,thusraisingsealevelseveralmetersandseverelyfloodingcoastalcities.Also,theincreaseinatmospherictemperaturewouldleadtogreatchangesintheclimateofthenorthernhemisphere,possiblyresultinginanalterationoftheearth’schieffoodgrowingzones.Inthepast,concernaboutaman-madewarmingoftheearthhasconcentratedontheArcticbecausetheAntarcticismuchcolderandhasamuchthickericesheet.ButtheweatherexpertsarenowpayingmoreattentiontoWestAntarctic,whichmaybeaffectedbyonlyafewdegreesofwarming:inotherwords,byawarmingonthescalethatwillpossiblytakeplaceinthenextfiftyyearsfromtheburningoffuels.SatellitepicturesshowthatlargeareasofAntarcticicearealreadydisappearing.Theevidenceavailablesuggeststhatawarminghastakenplace.Thisfitsthetheorythatcarbondioxidewarmstheearth.However,mostofthefuelisburntinthenorthernhemisphere,wheretemperaturesseemtobefalling.Scientistsconclude,therefore,thatuptonownaturalinfluencesontheweatherhaveexceededthosecausedbyman.Thequestionis:Whichnaturalcausehasmosteffectontheweather?Onepossibilityisthevariablebehaviorofthesun.Astronomersatoneresearchstationhavestudiedthehotspotsand‘cold’spots(thatis,therelativelylesshotspots)onthesun.Asthesunrotates,every27.5days,itpresentshotteror‘colder’facestotheearth,anddifferentaspectstodifferentpartsoftheearth.Thisseemstohaveaconsiderableeffectonthedistributionoftheearth’satmosphericpressure,andconsequentlyonwindcirculation.Thesunisalsovariableoveralongterm:itsheatoutputgoesupanddownincycles,thelatesttrendbeingdownward.Scientistsarenowfindingmutualrelationsbetweenmodelsofsolarweatherinteractionsandtheactualclimateovermanythousandsofyears,includingthelastIceAge.TheproblemisthatthemodelsarepredictingthattheworldshouldbeenteringanewIceAgeanditisnot.Onewayofsolvingthistheoreticaldifficultyistoassumeadelayofthousandsofyearswhilethesolareffectsovercometheinertia(惯性)oftheearth’sclimate.Ifthisisright,thewarmingeffectofcarbondioxidemightthusbeservingasausefulcounterbalancetothesun’sdiminishingheat.
题目： If the assumption about the delay of a new Ice Age is correct,（）. - A 、the best way to overcome the cooling effect would be to burn more fuels
- B 、ice would soon cover the northern hemisphere
- C 、the increased levels of carbon dioxide in the atmosphere could warm up the earth even more quickly
- D 、the greenhouse effect could work to the advantage of the earth
扫码下载亿题库
精准题库快速提分
参考答案【正确答案：D】
本题属其他方式提问的问题。短文的最后两句话说：“解决这一理论难题的方法之一就是假定：当太阳效应控制地球气候的惯性时就使冰河时代的出现推迟了几千年。如果这个假设是正确的，那么二氧化碳的温室效应就可能对正在减少的太阳热起到有用的平衡作用。”这与D答案中的“温室效应有利于地球”意思相吻合，故应选D答案。A的内容在原文中未涉及；B与原文正相反；C的内容与原文表达的内容不符。
您可能感兴趣的试题- 1 【单选题】She( )her trip to New York because she was ill.
- A 、called off
- B 、closed down
- C 、put up
- D 、went off
- 2 【单选题】The Space Age（）in October 1957 when the first artificial satellite was launched by the SovietUnion.
- A 、initiated
- B 、originated
- C 、embarked
- D 、commenced
- 3 【单选题】Some scientists are dubious of the claim that organisms（）with age as an inevitable outcome ofliving.
- A 、depress
- B 、default
- C 、deteriorate
- D 、degrade
- 4 【单选题】In mountainous regions, much of the snow that falls is（）into ice.
- A 、dispersed
- B 、embodied
- C 、compiled
- D 、compacted
- 5 【单选题】When and where to build the new factory( )yet.
- A 、is not decided
- B 、are not decided
- C 、has not decided
- D 、have not decided
- 6 【单选题】A new car( )her as a birthday present.
- A 、will be bought
- B 、is going to buy
- C 、will buy
- D 、will be bought for
- 7 【单选题】A new technique( ), the yields as a whole increased by 20 percent.
- A 、working out
- B 、having worked out
- C 、having been worked out
- D 、to have been
- 8 【阅读理解A】 When seeking to appoint new members to a corporation’s board, the chair traditionally looked for candidates who（）.
- A 、could work easily with other members of the board
- B 、were already involved in establishing policy for that corporation
- C 、had legal and governmental experience
- D 、had influential connections outside the business world
- 9 【英译汉】 Think about driving a route that’s very familiar. It could be your commute to work, a trip into town or the way home. Whichever it is, you know every twist and turn like the back of your hand. On these sorts of trips it’s easy to zone out from the actual driving and pay little attention to the passing scenery. The consequence is that you perceive that the trip has taken less time than it actually has. This is the well-traveled road effect: people tend to underestimate the time it takes to travel a familiar route. The effect is caused by the way we allocate our attention. When we travel down a well-known route, because we don’t have to concentrate much, time seems to flow more quickly. And afterwards, when we come to think back on it, we can’t remember the journey well because we didn’t pay much attention to it. So we assume it was shorter.
- 10 【英译汉】 Quality of life is about more than the size of your pay cheque. It means being able to spend an evening with your family once a week--instead of keeping one parent at home with the kids while the other works, and then exchanging a few words when you switch roles halfway through the day. It means being able to request working hours that allow you to travel when buses are running so you do not have to walk miles to get to work. Those things matter to workers. When someone on a low wage talks about finding a better job, better pay is just part of the mix. This is why campaigns groups across America are trying to win better conditions--enabling mployees to address questions of health, safety and life quality, alongside their wage gains. Short-notice rotas, as much as low pay or unsafe conditions, are central to a spate of protests across the US.
热门试题换一换
- A product is to be considered as being（）, when introduced into the commerce of anothercountry at less than its normal value.
- 随着数字技术的发展，音频、视频的播放形式出现了革命性转变。人们很快接受了一 些新形式，比如MP3、CD、DVD等。但是对于电子图书的接受并没有达到专家所预期的程度，现在仍有很大一部分读者喜欢捧着纸质出版物。纸质书籍在出版业中依然占据重要地位。因此有人说，书籍可能是数字技术需要攻破的最后一个堡垒。 以下哪项最不能对上述现象提供解释（）。
- 有种观点认为，到21世纪中叶，和发达国家相比，发展中国家将有更多的人死于艾滋病。其根据是：据统计，艾滋病毒感染者人数在发达国家趋于稳定或略有下降，在发展中国家却持续快速发展；到21世纪中叶，估计全球的艾滋病毒感染者将达到4000万至1亿1000万人，其中，60%将集中在发展中国家。这一观点缺乏充分的说服力。因为，同样权威的统计数据表明，发达国家艾滋病毒感染者从感染到发病的平均时间要大大短于发展中国家，而从发病到死亡的平均时间只有发展中国家的二分之一。 以下哪项最为恰当地概括了上述反驳所使用的方法（）。
- 提高教师应聘标准并不是引起目前中小学师资短缺的主要原因。引起中小学师资短缺的主要原因，是近年来中小学教学条件的改进缓慢，以及教师的工资的增长未能与其他行业同步。 以下哪项如果为真，最能加强上述断定（）。
- 产品出厂前需要在外包装上打印某些标志，甲、乙两人一起每小时可完成600件，则可以确定甲每小时完成的件数。（） （1）乙的打件速度是甲的打件速度的 （2）乙工作5小时可以完成1000件
- It can be inferred from the last paragraph that outside directors（）.
- Many people work part-time because they（）.
- What has affluence brought to American society?
亿题库—让考试变得更简单
已有600万用户下载
XG714