- 阅读理解B
题干：Intheatmosphere,carbondioxideactsratherlikeaone-waymirror—theglassintheroofofagreenwhichallowsthesun’sraystoenterbutpreventstheheatfromescaping.1.（）Accordingtoaweatherexpert’sprediction,theatmospherewillbe3℃warmerintheyear2050thanitistoday,ifmancontinuestoburnfuelsatthepresentrate.Ifthiswarming-uptookplace,theicecapsinthepoleswouldbegintomelt,thusraisingsealevelseveralmetersandseverelyfloodingcoastalcities.Also,theincreaseinatmospherictemperaturewouldleadtogreatchangesintheclimateofthenorthernhemisphere,possiblyresultinginanalterationoftheearth’schieffood-growingzones.2.（）Inthepast,concernaboutaman-madewarmingoftheearthhasconcentratedontheArcticbecausetheAntarcticismuchcolderandhasamuchthickericesheet.ButtheweatherexpertsarenowpayingmoreattentiontoWestAntarctic,whichmaybeaffectedbyonlyafewdegreesofwarming;inotherwords,byawarmingonthescalethatwillpossiblytakeplaceinthenextfiftyyearsfromtheburningoffuels.3.（）SatellitepicturesshowthatlargeareasofAntarcticicearealreadydisappearing.Theevidenceavailablesuggeststhatawarminghastakenplace.Thisfitsthetheorythatcarbondioxidewarmstheearth.However,mostofthefuelisburntinthenorthernhemisphere,wheretemperaturesseentobefalling.Scientistsconclude,therefore,thatuptonownaturalinfluencesontheweatherhaveexceededthosecausedbyman.Thequestionis:whichnaturalcausehasmosteffectontheweather?4.（）Onepossibilityisthevariablebehaviorofthesun.Astronomersatoneresearchstationhavestudiedthehotspotsand“cold”spots(thatis,therelativelylesshotspots)onthesun.Asthesunrotates,every27.5days,itpresentshotteror“colder”facetotheearth,anddifferentaspectstodifferentpartsoftheearth.Thisseemstohaveaconsiderableeffectonthedistributionoftheearth’satmosphericpressure,andconsequentlyonwindcirculation.Thesunisalsovariableoveralongterm:itsheatoutputgoesupanddownincycles,thelatesttrendbeingdownward.5.（）Scientistarenowfindingmutualrelationsbetweenmodelsofsolar-weatherinteractionsandtheactualclimateovermanythousandsofyears,includingthelastIceAge.TheproblemisthatthemodelsarepredictingthattheworldshouldbeenteringanewIceAgeanditisnot.Onewayofsolvingthistheoreticaldifficultyistoassumeadelayofthousandsofyearswhilethesolareffectsovercometheinertiaoftheearth’sclimate.Ifthisisright,thewarmingeffectofcarbondioxidemightthusbeservingasausefulcounter-balancetothesun’sdiminishingheat.
题目：（4） - A 、Global warming becomes more severe than before
- B 、Shifted focus
- C 、Global warming might be good for the earth
- D 、Balance must be achieved
- E 、One example of natural cause
- 、Scientists conclude a more significant impact on the weather
- 、Possible geographic and climate changes in the future
扫码下载亿题库
精准题库快速提分
参考答案【正确答案：E】
接着上一段讨论哪些自然原因，分析了太阳作为自然因素的其中之一的作用。
您可能感兴趣的试题- 1 【完形填空】（4）
- A 、moderate
- B 、normal
- C 、unusual
- D 、extreme
- 2 【完形填空】（7）
- A 、reality
- B 、phenomenon
- C 、 concept
- D 、notice
- 3 【完形填空】（1）
- A 、high
- B 、highly
- C 、sharply
- D 、hardly
- 4 【完形填空】（3）
- A 、multiplies
- B 、totals
- C 、adds
- D 、amounts
- 5 【完形填空】（6）
- A 、soaring
- B 、favorable
- C 、discount
- D 、premium
- 6 【阅读理解B】（5）
- A 、Use commute time
- B 、Make conversations about your artwork a priority
- C 、Read before you fall asleep
- D 、Carry a notepad and pen about
- E 、Take notes whenever ideas come
- 、Talk about yourself as much as possible
- 、Don't underestimate thinking time
- 7 【完形填空】（1）
- A 、for
- B 、for
- C 、to
- D 、of
- 8 【完形填空】（5）
- A 、retains
- B 、encounters
- C 、possesses
- D 、experiences
- 9 【完形填空】（6）
- A 、diseases
- B 、symptoms
- C 、signs
- D 、defects
- 10 【完形填空】（8）
- A 、adaptable
- B 、approachable
- C 、available
- D 、agreeable
热门试题换一换
- 在夏夜星空的某一区域，有7颗明亮的星星：A星、B星、C星、D星、E星、F星、G星,它们由北至南排列成一条直线，同时发现： （1）C星与E星相邻； （2）B星与F星相邻； （3）F星与C星相邻； （4）A星在F星的北侧某个位置。 假定G不与B相邻但与最南侧的某星相邻，可以推出位于正中的星是（）。
- I am pleased with what you have given me and ( )you have told me.
- It was not until she had arrived home（）she remembered her appointment with the doctor.
- 在计算机语言中有一种逻辑运算，如果两个数都是0时，其和为0；一个数为0，一个数为1时或两个数都是1时，其和为1。逻辑运算的数值除了0和1两个不同的值以外，也有可能是空集。 根据上述运算规则，下面哪项必为真（）。
- 在实验室密闭容器中培育某种细菌。如果该细菌每天的密度增长1倍，它在20天内密度增长到400万株/，那么该细菌密度增长到百万株/时用了（）天。
- 根据下述材料，写一篇700字左右的论说文，题目自拟。 一家企业遇到了这样一个问题：究竟是把有限的资金用于扩大生产呢，还是用于研发新产品？有人主张投资扩大生产，因为根据市场调查，原产品还可以畅销三到五年，由此可以获得可靠而丰厚的利润。有人主张投资研发新产品，因为这样做虽然有很大的风险，但风险背后可能有数倍于甚至数十倍于前者的利润。
- Which of the following statements is true about office speak?（）
- 中国网民数量快速上升
亿题库—让考试变得更简单
已有600万用户下载
7jPke