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1、Mid-termExaminationPaperforGrade2009,BandIIIPartIWriting（30minutes）(15%)注意：此部分试题在答题卡1上PartⅡReadingComprehension(SkimmingandScanning)(15minutes)（10％）Directions:Inthispart,youwillhave15minutestogooverthepassagequicklyandanswerthequestionsonAnswerSheet1.Forquestion
2、s1-7,choosethebestanswerfromthechoicesmarkedA),B),C)andD).Forquestions8to10,completethesentenceswiththeinformationgiveninthepassage.Whatwilltheworldbelikeinfiftyyears?Thisweeksometopscientists,includingNobelPrizewinners,gavetheirvisionofhowtheworldwilllookin2056
3、,fromgas-poweredcarstoextraordinaryhealthadvances,JohnInghamreportsonwhattheworld’sfinestmindsbelieveourfutureswillbe.Forthoseofusluckyenoughtolivethatlong,2056willbeaworldofalmostperpetualyouth,whereobesityisaremotememoryandrobotsbecomeourcompanions.Wewillberub
4、bingshoulderswithaliensandcolonizingouterspace.Betterstill,ourdescendantsmightatlastliveinaworldatpeacewithitself.Thepredictionisthatwewillhavefoundasourceofinexhaustible,safe,greenenergy,andthatsciencewillhavekilledoffreligion.Iftheyarerightwewillhaveremovedtwo
5、ofthemaincausesofwar-ourdependenceonoilandreligiousprejudice.Willwereally,astoday’sscientistsclaim,beabletoliveforeveroratleastcheattheageingprocesssothattheaveragepersonlivesto150?Ofcourse,allthesepredictionscomewithascientifichealthwarning.HarvardprofessorStev
6、enPinkersays:“Thisisaninvitationtolookfoolish,aswiththepredictionsofdomedcitiesandnuclear-poweredvacuumcleanersthatweremade50yearago.”LivinglongerAnthonyAtala,directoroftheWakeForestInstituteinNorthCarolina,believesfailingorganswillberepairedbyinjectingcellsinto
7、thebody.Theywillnaturallygostraighttotheinjuryandhelphealit.Asystemofinjectionswithoutneedlescouldalsoslowtheageingprocessbyusingthesameprocessto“tune”cells.BruceLahn,professorofhumangeneticsattheUniversityofChicago,anticipatestheabilitytoproduce“unlimitedsuppli
8、es”oftransplantablehumanorganswithouttheneedforhumandonors.Theseorganswouldbegrowninanimalssuchaspigs.Whenapatientneededaneworgan,suchasakidney,thesurgeonwouldcontact
