大学英语六级考试A卷真题及答案.docx

大学英语六级考试A卷真题及答案.docx

《大学英语六级考试A卷真题及答案.docx》由会员分享，可在线阅读，更多相关《大学英语六级考试A卷真题及答案.docx（19页珍藏版）》请在冰豆网上搜索。

大学英语六级考试A卷真题及答案

2008年6月大学英语六级考试A卷真题及答案

PartⅠ                Writing                        （30minutes）

注意：

此部分试题在答题卡1上

PartⅡ  ReadingComprehension（SkimmingandScanning）（15minutes）

Directions:

Inthispart,youwillhave15minutestogooverthepassagequicklyandanswerthequestionsonAnswerSheet1Forquestions1-7,choosethebestanswerfromthefourchoicesmarkedA）,B）,C）andD.Forquestions8-10,completethesentenceswiththeinformationgiveninthepassage.

Whatwilltheworldbelikeinfiftyyears?

Thisweeksometopscientists,includingNobelPrizewinners,gavetheirvisionofhowtheworldwilllookin2056,frongas-poweredcarstoextraordinaryhealthadvances,JohnInghamreportsonwhattheworld’sfinestmindsbelieveourfutureswillbe.

Forthoseofusluckyenoughtolivethatlong,2056willbeaworldofalmostperpetualyouth,whereobesityisaremotememoryandrobotsbecomeourcompanions.

Wewillberubbingshoulderswithaliensandcolonizingouterspace.Betterstill,ourdescendantsmightatlastliveinaworldatpeacewithitself.

Thepredictionisthatwewillhavefoundasourceofinexbaustible,safe,greenenergy,andthatsciencewillhavekilledoffreligion.Iftheyarerightwewillhaveremovedtwoofthemaincausesofwar-ourdependenceonoilandreligiousprejudice.

Willwereally,astoday’sscientistsclaim,beabletoliveforeveroratleastcheattheageingprocesssothattheaveragepersonlivesto150?

Ofcourse,allthesepredictionscomewithascientifichealthwarning.HarvardprofessorStevenPinkersays:

“Thisisaninvitationtolookfoolish,aswiththepredictionsofdomedcitiesandnuclear-poweredvacuumcleanersthatweremade50yearago.”

Livinglonger

AnthonyAtala,directoroftheWakeForestInstituteinNorthCarolina,belivesfailingorganswillberepairedbyinjectingcellsintothebody.Theywillnaturallytostraighttotheinjuryandhelphealit.Asystemofinjectionswithoutneedlescouldalsoslowtheageingprocessbyusingthesameprocessto“tune”cells.

BruceLahn,professorofhumangeneticsattheUniversityofChicago,anticipatestheabilitytoproduce“unlimitedsupplies”oftransplantablehumanorganswithouttheneededaneworgan,suchaskidney,thesurgeonwouldcontactacommercialorganproducer,givehimthepatient’simmuno-logicalprofileandwouldthenbesentakidneywiththecorrecttissuetype.

Theseorganswouldbeentirelycomposedofhumancells,grownbyintroducingthemintoanimalhosts,andalloweingthemtodeveoopintoandorganinplaceoftheanimal’sown.ButProf.Lahnbelievesthatfarmedbrainswouldbe“offlimits”.Hesays:

“Veryfewpeoplewouldwanttohavetheirbrainsreplacedbysomeoneelse’sandweprobablydon’twanttoputahumanbrainingananimalbody.”

RichardMiller,aprofessorattheUniversityofMichigan,thinksscientistcoulddevelop“anthenticanti-ageingdrugs”byworkingouthowcellsinlargeranimalssuchaswhalesandhumanresistmanyformsofinjuries.Hesays:

“It’sisnowroutine,inlaboratorymammals,toextendlifespanbyabout40%.Turningonthesameprotectivesystemsinpeopleshould,by2056,createthefirstclassof100-year-oldswhoareasvigorousandproductiveastoday’speopleintheir60s”

Aliens

ConlinPillinger,professorofplanerarysciencesattheOpenUniversity,says:

”IfancythatatleastwewillbeabletoshowthatlifedidistarttoevolveonMarswellasEarth.”Within50yearshehopesscientistswillprovethatalienlifecamehereinMartianmeteorites（陨石）.

ChrisMcKay,aplanetaryscientistatNASA’sAmesResearchCenter.believesthatin50yearswemayfindevidenceofalienlifeinancientpermanentforstofMarsoronotherplaners.

Headds:

”ThereisevenachancewewillfindalienlifeformshereonEarth.ItmightbeasdifferentasEnglishistoChinese.

PricetonprofessorFreemanDysonthinksit“likely”thatlifeformouterspacewillbediscovereddefore2056becausethetoolsforfindingit,suchasopticalandradiodetectionanddataprocessing,areimproving.

Heays:

”Assoonasthefirstevidenceisfound,wewillknowwhattolookforandadditionaldiscoveriesarelikelytofollowquickly.Suchdiscoveriesarelikelytohaverevolutionaryconsequencesforbiology,astronomyandphilosophy.Theymaychangethewaywelookatourselvesandourplaceintheuniverse.

Coloniesinspace

RichardGottprofessorofastrophysicsatPrinceton,hopesmanwillsetupaself-sufficientcolonyonMars,whichwouldbea“lifeinsurancepolicyagainstwhatevercatastrophes,naturalorotherwise,mightoccuronEarth.

“TherealspaceraceiswhetherwewillcoloniseoffEarthontootherworldsbeforemoneyforthespaceprogrammerunsout.”

Spinalinjuries

EllenHeber-Katz,aprofessorattheWistarInstitudeinPhiladelphia,foreseescuresforinijuriescausingparalysissuchastheonethatafflica