1990年全国硕士研究生入学统一考试英语试题阅读SectionIIReadingComprehensionEachofthetwopassagesbelowisfollowedbyfivequestions.Foreachquestiontherearefouranswers.Readthepassagescarefullyandchoosethebestanswertoeachofthequestions.Putyourchoiceinthebracketsontheleft.(10points)Text1①InMay1989,spaceshuttle“Atlantis”releasedinouterspacethespaceprobe“Megallan,”whichisnowonher15-monthandone-billion-kilometerflighttoVenus.②Anewphaseinspaceexplorationhasbegun.①TheplanetVenusisonlyslightlysmallerthanEarth;itistheonlyotherobjectinthesolarsystem,infact,thatevencomesclosetoearth’ssize.②Venushasasimilardensity,soitisprobablymadeofapproximatelythesamestuff,andithasanatmosphere,completewithclouds.③Itisalsotheclosestplanettoearth,andthusthemostsimilarindistancefromthesun.④Inshort,Venusseemstojustifyitslong-heldnicknameof“earth’stwin.”①ThesurfacetemperatureofVenusreachessome900F.②Addedtothatisanatmosphericpressureabout90timesEarth’s:Highoverheadinthecarbondioxide(CO2)thatpassesforairisalayerofclouds,perhaps10to20milesthick,whoselittledropsconsistmostlyofsulfuricacid(H2SO4).③Waterisallbutnonexistent.①Bornwithsomanyfundamentalsimilaritiestoearth,howdidVenusgettobesoradicallydifferent:Itisnotjustanacademicmatter.②Forallitsextremes,Venusisavaluablelaboratoryforresearchersstudyingtheweatherandclimateofearth.③Ithasnoearth’soceans,sotheheattransportandothermechanismsaregreatlysimplified.④Inaddition,theplanetVenustakes243earth-daystoturnonceonitsaxis,soincomingheatfromthesunisaddedanddistributedatamoreleisurely,observablepace.一、词汇1．shuttlen.返汽车(列车，飞机)；航天飞机，航天器2．releasev.放出，释放3.proben.探测4.phasen.阶段5.densityn.密度6.approximatelyad.大概，大约7.stuffn.材料，东西8.passesfor被当成9.sulfurica.硫的10.acidn.酸性物质，酸11.axisn.轴(线)12.leisurelyad.慢慢地，悠然地二、长难句1.InMay1989,spaceshuttle“Atlantis”releasedinouterspacethespaceprobe“Megallan,”whichisnowonher15-monthandone-billion-kilometerflighttoVenus.该句主干为spaceshuttle“Atlantis”released…thespaceprobe“Megallan”，which引导的定语从句做后置定语，修饰先行词thespaceprobe“Megallan”。翻译：1989年5月，“亚特兰蒂斯”号航天飞机将“麦哲伦”号金星探测器释放到外太空，使其开始了前往金星、航行时间十五个月、距离十亿公里的外太空航行。2.Addedtothatisanatmosphericpressureabout90timesEarth’s:Highoverheadinthecarbondioxide(CO2)thatpassesforairisalayerofclouds,perhaps10to20milesthick,whoselittledropsconsistmostlyofsulfuricacid(H2SO4).冒号前的句子是倒装句，正常语序为anatmosphericpressure…isaddedtothat，冒号后的部分对也是倒装句，正常语序为alayerofclouds…highoverheadinthecarbondioxide。That和whose引导的定语从句分别修饰先行词thecarbondioxide(CO2)和alayerofclouds。翻译：此外，其气压约为地球的90倍：高空中被看作是空气的二氧化碳形成了一层厚约10到20公里的浓云，而浓云的主要成分为硫酸。三、文章结构分析本文是一篇有关金星和地球之间物理特性异同的说明文。文章主要从体积、密度、构成物质、大气成分、与太阳间的距离、行星表面温度、气压、空气成分、储水量以及太阳热量吸收和散发方式等方面对二者进行了比较。第一段：由“麦哲伦”号的升空引入探索金星的话题。第二段：阐述了金星与地球在体积、密度、构成物质、大气成分、与太阳间的距离等方面的相似之处。第三段：从行星表面温度、气压、空气成分、储水量等方面探讨了金星与地球之间的差异。第四段：指出研究金星的目的在于更好地了解地球，并说明能够实现该目的的原因。四、试题具体分析11.Venusissimilar...
