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下面的短文后有2项测试任务：(1)第23～26题要求从所给的6个选项中为第2～5段每段选择1个最佳标题；(2)第27～30题要求从所给的6个选项中为每个句子确定1个最佳选项。 ? ? ? ? ? ?...
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? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第1～4段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第1～4段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第1～4段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第2～5段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第2～5段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第1～4段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第1～4段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第2～5段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第2～5段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第1～4段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第2～5段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第2～5段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第2～5段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第2～5段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第2～5段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第1～4段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第2～5段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第2～5段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第1～4段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第2～5段每段选
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Migrant移民的Workers Inmepasttwentyyearstherehasbeenallincreasingtendencyforworkerstomovefromonecountrytoanother．Whilesomecountrieshaverestricted限制most______51tolocalpeopleothershaveattractedandwelcomedmigrantworkers．ThisisparticularlythecaseintheMiddleEast______52increased0ilincomeshaveenabledmanycountriestocallinoutsiderstoimprovelocalfacilities设施．ThustheMiddleEasthasattractedoil-workers______53theU．S．A．andEurope．Ithasalsobroughtinworkersfrommanyothercountries______54SouthKoreaandJapan． Inviewofthedifficultlivingandworking______55intheMiddleEastitisnot surprisingthatthepayishightoattractsuitableworkers．Manyengineersandtechnicians．Can______56atleasttwiceasmuchmoneyintheMiddleEastastheyCarlintheirOwncountryandthisisamajor______57． Sometimesadisadvantagehasacompensating补偿的advantage．Forexamplethe ______58livingconditionsoftenleadt0increasedfriendshipwhenworkershaveto______59oneachotherforsafetyandcomfort．InasimilarwaymanymigrantworkersCansavelargesumsofmoneypartlybecauseofthe______60ofentertainment娱乐facilities．Theworkisoftencomplexandfullofproblemsbutthismerelypresentsgreaterchallengetoengineerswhoprefertofindsolutionstoproblemsratherthando______61workintheirhomecountry． Onemajorproblemwhich______62migrantworkersintheMiddleEastisthattheirjobsaretemporaryones．Theyarenearlyalwayson______63soitisnoteasyforthemtoplanaheadwithgreatconfidence．Thisistobe______64sincenocountrywelcomesalargenumberofforeignworkersaspermanentresidents．Inany______65migrantworkersacceptthisdisadvantagealong也othersbecauseoftheconsiderablefinancialbenefitswhichtheyreceive．
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第三篇HumanSpaceExploration WhilescientistsaresearchingthecauseoftheColumbiadisasterNASAismovingaheadwithplanstodevelopanewcraftthatwouldreplaceshuttles航天飞机onspacestationmissionsby2012andrespondquicklytospacestationemergencies． Thespaceagencyreleasedthefirstsetofmissionneedsandrequirementsseveraldaysagoformeorbitalspaceplane轨道航天飞机whichwouldbedesignedtotransportacrewoffourtoandfromtheInternationalSpaceStation． Althoughitincludesfewspecificstheplanstatestheorbiter轨道航天飞机willbesafercheaperandrequirelesspreparationtimethantheshuttle．Itwouldbeabletotransportfourcrewmembersby2012--thoughitwouldbeavailableforrescuemissionsby2010.NASAsaysthecraftshouldbeabletotransportinjuredorillspacestationcrewmemberstodefinitive决定性的medicalcarewithin24hours． ThereleaseoftherequirementsshowedNASAremainsfocusedonthelong-termprioritiesofspaceexplorationevenasquestionsexistconcerningthelossofColumbiaanditsseven．membercrewonFebruaryl2003．． ExpelsatMarshallSpaceFlightCenterinHuntsvilleAlabamahavebeenworkingforyearsonasuccessortotheshuttle．TheprojectknownastheSpaceLaunchInitiative倡议wasdividedlastyearintotwoparts----onefocusingonafuturelaunchvehicletheotheronaspacestationorbiter．Theorbiterisexpectedtobereadysooner． Theprogram’smanagerssayNASAofficialshavetoldthemnottoalterSpaceLaunchInitiativeinlightoftheColumbiadisaster． U．S．PresidentGeorgeWBushaskedCongressforaboutUS$1billionforSpaceLaunchInitiativein2004fundsthatwouldbealmostequallysplitbetweentheOrbitalSpacePlaneandNextGenerationLaunchTechnology． Thedesignoftheorbiterindicates
Migrant移民的Workers Inmepasttwentyyearstherehasbeenallincreasingtendencyforworkerstomovefromonecountrytoanother．Whilesomecountrieshaverestricted限制most______51tolocalpeopleothershaveattractedandwelcomedmigrantworkers．ThisisparticularlythecaseintheMiddleEast______52increased0ilincomeshaveenabledmanycountriestocallinoutsiderstoimprovelocalfacilities设施．ThustheMiddleEasthasattractedoil-workers______53theU．S．A．andEurope．Ithasalsobroughtinworkersfrommanyothercountries______54SouthKoreaandJapan． Inviewofthedifficultlivingandworking______55intheMiddleEastitisnot surprisingthatthepayishightoattractsuitableworkers．Manyengineersandtechnicians．Can______56atleasttwiceasmuchmoneyintheMiddleEastastheyCarlintheirOwncountryandthisisamajor______57． Sometimesadisadvantagehasacompensating补偿的advantage．Forexamplethe ______58livingconditionsoftenleadt0increasedfriendshipwhenworkershaveto______59oneachotherforsafetyandcomfort．InasimilarwaymanymigrantworkersCansavelargesumsofmoneypartlybecauseofthe______60ofentertainment娱乐facilities．Theworkisoftencomplexandfullofproblemsbutthismerelypresentsgreaterchallengetoengineerswhoprefertofindsolutionstoproblemsratherthando______61workintheirhomecountry． Onemajorproblemwhich______62migrantworkersintheMiddleEastisthattheirjobsaretemporaryones．Theyarenearlyalwayson______63soitisnoteasyforthemtoplanaheadwithgreatconfidence．Thisistobe______64sincenocountrywelcomesalargenumberofforeignworkersaspermanentresidents．Inany______65migrantworkersacceptthisdisadvantagealong也othersbecauseoftheconsiderablefinancialbenefitswhichtheyreceive．
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Migrant移民的Workers Inmepasttwentyyearstherehasbeenallincreasingtendencyforworkerstomovefromonecountrytoanother．Whilesomecountrieshaverestricted限制most______51tolocalpeopleothershaveattractedandwelcomedmigrantworkers．ThisisparticularlythecaseintheMiddleEast______52increased0ilincomeshaveenabledmanycountriestocallinoutsiderstoimprovelocalfacilities设施．ThustheMiddleEasthasattractedoil-workers______53theU．S．A．andEurope．Ithasalsobroughtinworkersfrommanyothercountries______54SouthKoreaandJapan． Inviewofthedifficultlivingandworking______55intheMiddleEastitisnot surprisingthatthepayishightoattractsuitableworkers．Manyengineersandtechnicians．Can______56atleasttwiceasmuchmoneyintheMiddleEastastheyCarlintheirOwncountryandthisisamajor______57． Sometimesadisadvantagehasacompensating补偿的advantage．Forexamplethe ______58livingconditionsoftenleadt0increasedfriendshipwhenworkershaveto______59oneachotherforsafetyandcomfort．InasimilarwaymanymigrantworkersCansavelargesumsofmoneypartlybecauseofthe______60ofentertainment娱乐facilities．Theworkisoftencomplexandfullofproblemsbutthismerelypresentsgreaterchallengetoengineerswhoprefertofindsolutionstoproblemsratherthando______61workintheirhomecountry． Onemajorproblemwhich______62migrantworkersintheMiddleEastisthattheirjobsaretemporaryones．Theyarenearlyalwayson______63soitisnoteasyforthemtoplanaheadwithgreatconfidence．Thisistobe______64sincenocountrywelcomesalargenumberofforeignworkersaspermanentresidents．Inany______65migrantworkersacceptthisdisadvantagealong也othersbecauseoftheconsiderablefinancialbenefitswhichtheyreceive．
Chimpanzees 1Chimpanzees黑猩猩willsoonbeextinct灭绝.Ifthepresentrateofhuntingandhabitat栖息地destructioncontinuesthenwithin20yearstherewillbenochimpanzeeslivinginthewild.Butthisismorethananenvironmentalormoraltragedy悲剧.Chimpanzeeextinctionmayalsohaveprofoundimplications含意forthesurvivaloftheirdistantrelatives-humanbeings. 2In1975thebiologistMarie-ClaireKingandAllanWilsondiscoveredthatthehumanandchimpanzeegenomes基因组matchbyover98%.Comparethistothemouseusedasmodelforhumandiseaseinlabtestswhichsharesonly60%ofitsDNAwithus.Infactchimpanzeesarefarmoresimilartohumansthantheyaretoanyotherspeciesofmonkey.Aswellasresemblingusgeneticallychimpsarehighlyintelligentandabletousetools.Thesefactsaloneshouldbeenoughtomakeprotectionofchimpsanurgentpriority优先.Butthereisanothermoreselfishreasontopreservethechimp. 3Thechimpanzees’trumpcard王牌comesinthefieldofmedicalresearch.Chimpanzeesaresosimilartohumansthatveterinarians兽医oftenrefertohumanmedicaltextbookswhentreatingthem.Yetchimpanzeesdoshowdifferencesinseveralkeyareas.Inparticularchimpsaremuchmoreresistanttoanumberofmajordiseases.Itisthisabilitythatissointeresting. 4ForexamplechimpsseemtoshowamuchhigherresistancethanhumanstoHIVthevirusthatcausesAIDS.IndeedtheiruseasexperimentalanimalsinAIDSresearchhasdeclinedbecausetheyaresoresistant. 5Bysequencingthechimpgenomeandpinpointing找到theplacewherethechimpanzeeDNAsequencediffersfromthatofhumansscientistshopetobeabletodiscoverwhichpartofthegeneticcodegiveschimpstheirincreasedresistancetosomediseases.Thistheyhopewillallowthemtodevelopnewandmoreeffectivetreatmentsforthehumanformsofthesediseases.Suchtreatmentscouldincludetheproductionofnewdrugsoreventhealteration改变ofthehumangeneticsequence.Therecentlycompletedhumangenomesequencingprojecthasshownthatsuchaneffortisnowwellwithinourreach. 23Paragraph1_________. 24Paragraph2_________. 25Paragraph3_________. 26Paragraph4_________. AReasonsforHIVresistance BImplicationsofchimpanzeeextinctionforhumans CEffectiveAIDStreatment DGeneticsimilaritiesbetweenchimpsandhumans EChimps’resistancetoHIV FGeneticdifferencesbetweenchimpsandhumans 27Chimpanzeeextinctionmayaffect_________. 28Thereisadifferenceoflessthan2%betweenthechimpand_________. 29Scientistssuspectthatgenesplayasignificantroleinprotectingchimpsfromgetting_________. 30Thediscoveryofthegeneticcodeofchimpswillbehelpfulto_________. Asomehumandiseasetreatments Bsomediseases Chumansurvival Dhumangenomes Ekeyareas Fhealthierlifestyle
材料暂缺OnthebattlefieldsNightingaleandhernursesprovedtobe
第一篇SleeplessatNight Itwasanormalsummernight．Humidity湿气hunginthethickair． Icouldn’tgotosleep．partlybecauseofmycoldandpartlybecauseofmyexpectationsforthenextday．Mymumhadsaidthattomorrowwasgoingtobeasurprise． Sweatstucktomyachingbody．FinallyIgatheredenoughstrengthtositup．Ilookedoutofmysmallwindowintothenight．Therewasabigbrightmoonhangingintheskygivingoffamagiclight． Icouldn’tstandthepressureanymoreSOIdidwhatIalwaysdotomakemyselffeelbetter．1wenttothebathroomandpickedupmytoothbrushandtoothpaste．Icleanedmyteethasiftherewasnotomorrow．Backandforthupanddown． Then1walkeddownstairstolookforsomesignsofmovementsomelife．Gladiatormycatfrightenedmeashemeowed喵喵地唱出hissadsong．Hewasont11e01dorangecouch长沙发sittinguponhisfrontlegswaitingforsomethingtohappen．HelookedatmeasiftosayI’mlonelypetme．Ineedagoodhug紧抱．Eventhecouchbeggedmetositonit． InonemovementIsettleddownontothesoftcouch．Thiscouchrepresentedmyparents’marriagemybirthandhundredsofotherlittleevents． AsIheldGladiatormyheartstartedbeatingheavily．MymindwasfloodedwithquestionsWhat’slife?AmIreallyalive?Areyoulisteningtome?EverytimeImovedmyhanddownGladiator’sbodyIhadanewthoughteachtouchsangadifferentsong． Iforgeta11abouttheheatandthenextday’ssurprise．TheatmospherewasSOfullofwarmthandsilencethatIsankintoitsalms．Fallingasleepwiththebigcatinmyarms．Ifeltallmyworriesslowlymoveaway． 暂缺
Mothers’willingnesstodochildren’shouseholdchores家务worsens theproblem.DionisioMassoa60-year-oldinMadridhasthreechildrenin their20s.Theeldest28hasagirlfriendandajob.Butlifewithmunin good. Hismumdoesthewashandcooksforhim:intheend.heliveswell. Massosaid.TheYouthEmancipationprogramaimsathelpingyoungpeople
Migrant移民的Workers Inmepasttwentyyearstherehasbeenallincreasingtendencyforworkerstomovefromonecountrytoanother．Whilesomecountrieshaverestricted限制most______51tolocalpeopleothershaveattractedandwelcomedmigrantworkers．ThisisparticularlythecaseintheMiddleEast______52increased0ilincomeshaveenabledmanycountriestocallinoutsiderstoimprovelocalfacilities设施．ThustheMiddleEasthasattractedoil-workers______53theU．S．A．andEurope．Ithasalsobroughtinworkersfrommanyothercountries______54SouthKoreaandJapan． Inviewofthedifficultlivingandworking______55intheMiddleEastitisnot surprisingthatthepayishightoattractsuitableworkers．Manyengineersandtechnicians．Can______56atleasttwiceasmuchmoneyintheMiddleEastastheyCarlintheirOwncountryandthisisamajor______57． Sometimesadisadvantagehasacompensating补偿的advantage．Forexamplethe ______58livingconditionsoftenleadt0increasedfriendshipwhenworkershaveto______59oneachotherforsafetyandcomfort．InasimilarwaymanymigrantworkersCansavelargesumsofmoneypartlybecauseofthe______60ofentertainment娱乐facilities．Theworkisoftencomplexandfullofproblemsbutthismerelypresentsgreaterchallengetoengineerswhoprefertofindsolutionstoproblemsratherthando______61workintheirhomecountry． Onemajorproblemwhich______62migrantworkersintheMiddleEastisthattheirjobsaretemporaryones．Theyarenearlyalwayson______63soitisnoteasyforthemtoplanaheadwithgreatconfidence．Thisistobe______64sincenocountrywelcomesalargenumberofforeignworkersaspermanentresidents．Inany______65migrantworkersacceptthisdisadvantagealong也othersbecauseoftheconsiderablefinancialbenefitswhichtheyreceive．
Migrant移民的Workers Inmepasttwentyyearstherehasbeenallincreasingtendencyforworkerstomovefromonecountrytoanother．Whilesomecountrieshaverestricted限制most______51tolocalpeopleothershaveattractedandwelcomedmigrantworkers．ThisisparticularlythecaseintheMiddleEast______52increased0ilincomeshaveenabledmanycountriestocallinoutsiderstoimprovelocalfacilities设施．ThustheMiddleEasthasattractedoil-workers______53theU．S．A．andEurope．Ithasalsobroughtinworkersfrommanyothercountries______54SouthKoreaandJapan． Inviewofthedifficultlivingandworking______55intheMiddleEastitisnot surprisingthatthepayishightoattractsuitableworkers．Manyengineersandtechnicians．Can______56atleasttwiceasmuchmoneyintheMiddleEastastheyCarlintheirOwncountryandthisisamajor______57． Sometimesadisadvantagehasacompensating补偿的advantage．Forexamplethe ______58livingconditionsoftenleadt0increasedfriendshipwhenworkershaveto______59oneachotherforsafetyandcomfort．InasimilarwaymanymigrantworkersCansavelargesumsofmoneypartlybecauseofthe______60ofentertainment娱乐facilities．Theworkisoftencomplexandfullofproblemsbutthismerelypresentsgreaterchallengetoengineerswhoprefertofindsolutionstoproblemsratherthando______61workintheirhomecountry． Onemajorproblemwhich______62migrantworkersintheMiddleEastisthattheirjobsaretemporaryones．Theyarenearlyalwayson______63soitisnoteasyforthemtoplanaheadwithgreatconfidence．Thisistobe______64sincenocountrywelcomesalargenumberofforeignworkersaspermanentresidents．Inany______65migrantworkersacceptthisdisadvantagealong也othersbecauseoftheconsiderablefinancialbenefitswhichtheyreceive．
Water-theIssueofThisCentury Theworldisrunningshortoffreshwater.PopulationsaregrowingbiggerandThirstier渴的withtheresultthatfreshwaterisbecomingincreasinglyscarce缺乏.Halftheworld’swetlandshavedisappearedduringthelastcenturywhileestimatessuggestthatwaterusewillriseby50%inthenext30years. TheWorldBankreportestimatesthatasmuchashalfoftheworld’spopulationconcentratedinAfricatheMiddleEastandsouthAsiawillface’severewatershortages’by2025.Localwaterconflictsandthelossoffreshwaterecosystemsappearlargeinsomeregions. Asimilarpictureemergesfromtheglobe’ssaltwaterregions.Three-quartersoftheworld’speoplemaylivewithin100kmoftheseain2025puttingevenmorepressureonstretchedcoastalecosystems.Twothirdsoffisheries渔业areexploitedatorbeyondtheirsustainablelimitsandhalftheworld’scoralreefs珊瑚礁mayperishin100years.Almost60%ofcoralreefsand34%offishspeciesareatriskfromhumanactivitiestheBanksays. Thereportconcludesthatthereisampleevidencetojustifyimmediateandcoordinatedactiontosafeguardsuppliesandusewatermoreefficiently. Freshwaterconsumptionisrisingquicklyandtheavailabilityofwaterinsomeregionsislikelytobecomeoneofthemostpressingissuesofthe21stcentury. Athirdoftheworld’spopulation-aroundtwobillionpeople-liveincountriesthatareexperiencingmoderatetohighwatershortages.Thatproportioncouldrisetohalformoreinthenext30yearsunlessinstitutions制度changetoensurebetterconservationandallocationofwater. Chinaisonecountrywheretheportents征兆aregloomy.Themostwater-stressedcountryinEastAsiaChinaisexploiting44%ofitsusablewaterafigureprojectedtoriseto60%by2020.Primarywithdrawalofwaterofmorethan60%iswidelyconsideredbywaterexpertstoexceedtheenvironmentalcarryingcapacityofariverbasinsystem.AlthoughChina’stotaluseappearsstilltobereasonableithasseveralbasinsthatareseverelystressedenvironmentally. WithdrawalsexceedenvironmentallimitsinAfghanistanandPakistanandwillexceedtheminIndiaby2020.IntheMiddleEastandNorthAfricaonlyMoroccohasunexploitedwaterresources.Theresthaveexceededenvironmentallimitsandmanyareminingaquifers蓄水层-bodiesofwater-bearingrock-thereportsays. Almostallcoralreefsmaydisappearin100years.
Water-theIssueofThisCentury Theworldisrunningshortoffreshwater.PopulationsaregrowingbiggerandThirstier渴的withtheresultthatfreshwaterisbecomingincreasinglyscarce缺乏.Halftheworld’swetlandshavedisappearedduringthelastcenturywhileestimatessuggestthatwaterusewillriseby50%inthenext30years. TheWorldBankreportestimatesthatasmuchashalfoftheworld’spopulationconcentratedinAfricatheMiddleEastandsouthAsiawillface’severewatershortages’by2025.Localwaterconflictsandthelossoffreshwaterecosystemsappearlargeinsomeregions. Asimilarpictureemergesfromtheglobe’ssaltwaterregions.Three-quartersoftheworld’speoplemaylivewithin100kmoftheseain2025puttingevenmorepressureonstretchedcoastalecosystems.Twothirdsoffisheries渔业areexploitedatorbeyondtheirsustainablelimitsandhalftheworld’scoralreefs珊瑚礁mayperishin100years.Almost60%ofcoralreefsand34%offishspeciesareatriskfromhumanactivitiestheBanksays. Thereportconcludesthatthereisampleevidencetojustifyimmediateandcoordinatedactiontosafeguardsuppliesandusewatermoreefficiently. Freshwaterconsumptionisrisingquicklyandtheavailabilityofwaterinsomeregionsislikelytobecomeoneofthemostpressingissuesofthe21stcentury. Athirdoftheworld’spopulation-aroundtwobillionpeople-liveincountriesthatareexperiencingmoderatetohighwatershortages.Thatproportioncouldrisetohalformoreinthenext30yearsunlessinstitutions制度changetoensurebetterconservationandallocationofwater. Chinaisonecountrywheretheportents征兆aregloomy.Themostwater-stressedcountryinEastAsiaChinaisexploiting44%ofitsusablewaterafigureprojectedtoriseto60%by2020.Primarywithdrawalofwaterofmorethan60%iswidelyconsideredbywaterexpertstoexceedtheenvironmentalcarryingcapacityofariverbasinsystem.AlthoughChina’stotaluseappearsstilltobereasonableithasseveralbasinsthatareseverelystressedenvironmentally. WithdrawalsexceedenvironmentallimitsinAfghanistanandPakistanandwillexceedtheminIndiaby2020.IntheMiddleEastandNorthAfricaonlyMoroccohasunexploitedwaterresources.Theresthaveexceededenvironmentallimitsandmanyareminingaquifers蓄水层-bodiesofwater-bearingrock-thereportsays. TheWorldBankreportimpliesthaturgentactionshouldbetakentoprotectwatersupplies.
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第三篇HumanSpaceExploration WhilescientistsaresearchingthecauseoftheColumbiadisasterNASAismovingaheadwithplanstodevelopanewcraftthatwouldreplaceshuttles航天飞机onspacestationmissionsby2012andrespondquicklytospacestationemergencies． Thespaceagencyreleasedthefirstsetofmissionneedsandrequirementsseveraldaysagoformeorbitalspaceplane轨道航天飞机whichwouldbedesignedtotransportacrewoffourtoandfromtheInternationalSpaceStation． Althoughitincludesfewspecificstheplanstatestheorbiter轨道航天飞机willbesafercheaperandrequirelesspreparationtimethantheshuttle．Itwouldbeabletotransportfourcrewmembersby2012--thoughitwouldbeavailableforrescuemissionsby2010.NASAsaysthecraftshouldbeabletotransportinjuredorillspacestationcrewmemberstodefinitive决定性的medicalcarewithin24hours． ThereleaseoftherequirementsshowedNASAremainsfocusedonthelong-termprioritiesofspaceexplorationevenasquestionsexistconcerningthelossofColumbiaanditsseven．membercrewonFebruaryl2003．． ExpelsatMarshallSpaceFlightCenterinHuntsvilleAlabamahavebeenworkingforyearsonasuccessortotheshuttle．TheprojectknownastheSpaceLaunchInitiative倡议wasdividedlastyearintotwoparts----onefocusingonafuturelaunchvehicletheotheronaspacestationorbiter．Theorbiterisexpectedtobereadysooner． Theprogram’smanagerssayNASAofficialshavetoldthemnottoalterSpaceLaunchInitiativeinlightoftheColumbiadisaster． U．S．PresidentGeorgeWBushaskedCongressforaboutUS$1billionforSpaceLaunchInitiativein2004fundsthatwouldbealmostequallysplitbetweentheOrbitalSpacePlaneandNextGenerationLaunchTechnology． Accordingtothepassagethe1billionfundsifgrantedwould
材料暂缺暂缺
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Mothers’willingnesstodochildren’shouseholdchores家务worsens theproblem.DionisioMassoa60-year-oldinMadridhasthreechildrenin their20s.Theeldest28hasagirlfriendandajob.Butlifewithmunin good. Hismumdoesthewashandcooksforhim:intheend.heliveswell. Massosaid.Youngpeople’sfamilydependencecanbeattributedtoallthefollowingfactorsEXCEPT
Water-theIssueofThisCentury Theworldisrunningshortoffreshwater.PopulationsaregrowingbiggerandThirstier渴的withtheresultthatfreshwaterisbecomingincreasinglyscarce缺乏.Halftheworld’swetlandshavedisappearedduringthelastcenturywhileestimatessuggestthatwaterusewillriseby50%inthenext30years. TheWorldBankreportestimatesthatasmuchashalfoftheworld’spopulationconcentratedinAfricatheMiddleEastandsouthAsiawillface’severewatershortages’by2025.Localwaterconflictsandthelossoffreshwaterecosystemsappearlargeinsomeregions. Asimilarpictureemergesfromtheglobe’ssaltwaterregions.Three-quartersoftheworld’speoplemaylivewithin100kmoftheseain2025puttingevenmorepressureonstretchedcoastalecosystems.Twothirdsoffisheries渔业areexploitedatorbeyondtheirsustainablelimitsandhalftheworld’scoralreefs珊瑚礁mayperishin100years.Almost60%ofcoralreefsand34%offishspeciesareatriskfromhumanactivitiestheBanksays. Thereportconcludesthatthereisampleevidencetojustifyimmediateandcoordinatedactiontosafeguardsuppliesandusewatermoreefficiently. Freshwaterconsumptionisrisingquicklyandtheavailabilityofwaterinsomeregionsislikelytobecomeoneofthemostpressingissuesofthe21stcentury. Athirdoftheworld’spopulation-aroundtwobillionpeople-liveincountriesthatareexperiencingmoderatetohighwatershortages.Thatproportioncouldrisetohalformoreinthenext30yearsunlessinstitutions制度changetoensurebetterconservationandallocationofwater. Chinaisonecountrywheretheportents征兆aregloomy.Themostwater-stressedcountryinEastAsiaChinaisexploiting44%ofitsusablewaterafigureprojectedtoriseto60%by2020.Primarywithdrawalofwaterofmorethan60%iswidelyconsideredbywaterexpertstoexceedtheenvironmentalcarryingcapacityofariverbasinsystem.AlthoughChina’stotaluseappearsstilltobereasonableithasseveralbasinsthatareseverelystressedenvironmentally. WithdrawalsexceedenvironmentallimitsinAfghanistanandPakistanandwillexceedtheminIndiaby2020.IntheMiddleEastandNorthAfricaonlyMoroccohasunexploitedwaterresources.Theresthaveexceededenvironmentallimitsandmanyareminingaquifers蓄水层-bodiesofwater-bearingrock-thereportsays. Mostdevelopedcountrieswillfacewatershortagesin20years.
Thesepaintingsareconsideredbymanytobe{{U}}authentic.{{/U}}
Chimpanzees 1Chimpanzees黑猩猩willsoonbeextinct灭绝.Ifthepresentrateofhuntingandhabitat栖息地destructioncontinuesthenwithin20yearstherewillbenochimpanzeeslivinginthewild.Butthisismorethananenvironmentalormoraltragedy悲剧.Chimpanzeeextinctionmayalsohaveprofoundimplications含意forthesurvivaloftheirdistantrelatives-humanbeings. 2In1975thebiologistMarie-ClaireKingandAllanWilsondiscoveredthatthehumanandchimpanzeegenomes基因组matchbyover98%.Comparethistothemouseusedasmodelforhumandiseaseinlabtestswhichsharesonly60%ofitsDNAwithus.Infactchimpanzeesarefarmoresimilartohumansthantheyaretoanyotherspeciesofmonkey.Aswellasresemblingusgeneticallychimpsarehighlyintelligentandabletousetools.Thesefactsaloneshouldbeenoughtomakeprotectionofchimpsanurgentpriority优先.Butthereisanothermoreselfishreasontopreservethechimp. 3Thechimpanzees’trumpcard王牌comesinthefieldofmedicalresearch.Chimpanzeesaresosimilartohumansthatveterinarians兽医oftenrefertohumanmedicaltextbookswhentreatingthem.Yetchimpanzeesdoshowdifferencesinseveralkeyareas.Inparticularchimpsaremuchmoreresistanttoanumberofmajordiseases.Itisthisabilitythatissointeresting. 4ForexamplechimpsseemtoshowamuchhigherresistancethanhumanstoHIVthevirusthatcausesAIDS.IndeedtheiruseasexperimentalanimalsinAIDSresearchhasdeclinedbecausetheyaresoresistant. 5Bysequencingthechimpgenomeandpinpointing找到theplacewherethechimpanzeeDNAsequencediffersfromthatofhumansscientistshopetobeabletodiscoverwhichpartofthegeneticcodegiveschimpstheirincreasedresistancetosomediseases.Thistheyhopewillallowthemtodevelopnewandmoreeffectivetreatmentsforthehumanformsofthesediseases.Suchtreatmentscouldincludetheproductionofnewdrugsoreventhealteration改变ofthehumangeneticsequence.Therecentlycompletedhumangenomesequencingprojecthasshownthatsuchaneffortisnowwellwithinourreach. 23Paragraph1_________. 24Paragraph2_________. 25Paragraph3_________. 26Paragraph4_________. AReasonsforHIVresistance BImplicationsofchimpanzeeextinctionforhumans CEffectiveAIDStreatment DGeneticsimilaritiesbetweenchimpsandhumans EChimps’resistancetoHIV FGeneticdifferencesbetweenchimpsandhumans 27Chimpanzeeextinctionmayaffect_________. 28Thereisadifferenceoflessthan2%betweenthechimpand_________. 29Scientistssuspectthatgenesplayasignificantroleinprotectingchimpsfromgetting_________. 30Thediscoveryofthegeneticcodeofchimpswillbehelpfulto_________. Asomehumandiseasetreatments Bsomediseases Chumansurvival Dhumangenomes Ekeyareas Fhealthierlifestyle
第三篇HumanSpaceExploration WhilescientistsaresearchingthecauseoftheColumbiadisasterNASAismovingaheadwithplanstodevelopanewcraftthatwouldreplaceshuttles航天飞机onspacestationmissionsby2012andrespondquicklytospacestationemergencies． Thespaceagencyreleasedthefirstsetofmissionneedsandrequirementsseveraldaysagoformeorbitalspaceplane轨道航天飞机whichwouldbedesignedtotransportacrewoffourtoandfromtheInternationalSpaceStation． Althoughitincludesfewspecificstheplanstatestheorbiter轨道航天飞机willbesafercheaperandrequirelesspreparationtimethantheshuttle．Itwouldbeabletotransportfourcrewmembersby2012--thoughitwouldbeavailableforrescuemissionsby2010.NASAsaysthecraftshouldbeabletotransportinjuredorillspacestationcrewmemberstodefinitive决定性的medicalcarewithin24hours． ThereleaseoftherequirementsshowedNASAremainsfocusedonthelong-termprioritiesofspaceexplorationevenasquestionsexistconcerningthelossofColumbiaanditsseven．membercrewonFebruaryl2003．． ExpelsatMarshallSpaceFlightCenterinHuntsvilleAlabamahavebeenworkingforyearsonasuccessortotheshuttle．TheprojectknownastheSpaceLaunchInitiative倡议wasdividedlastyearintotwoparts----onefocusingonafuturelaunchvehicletheotheronaspacestationorbiter．Theorbiterisexpectedtobereadysooner． Theprogram’smanagerssayNASAofficialshavetoldthemnottoalterSpaceLaunchInitiativeinlightoftheColumbiadisaster． U．S．PresidentGeorgeWBushaskedCongressforaboutUS$1billionforSpaceLaunchInitiativein2004fundsthatwouldbealmostequallysplitbetweentheOrbitalSpacePlaneandNextGenerationLaunchTechnology． NASAplanstodesignthenewspacecraftto
Chimpanzees 1Chimpanzees黑猩猩willsoonbeextinct灭绝.Ifthepresentrateofhuntingandhabitat栖息地destructioncontinuesthenwithin20yearstherewillbenochimpanzeeslivinginthewild.Butthisismorethananenvironmentalormoraltragedy悲剧.Chimpanzeeextinctionmayalsohaveprofoundimplications含意forthesurvivaloftheirdistantrelatives-humanbeings. 2In1975thebiologistMarie-ClaireKingandAllanWilsondiscoveredthatthehumanandchimpanzeegenomes基因组matchbyover98%.Comparethistothemouseusedasmodelforhumandiseaseinlabtestswhichsharesonly60%ofitsDNAwithus.Infactchimpanzeesarefarmoresimilartohumansthantheyaretoanyotherspeciesofmonkey.Aswellasresemblingusgeneticallychimpsarehighlyintelligentandabletousetools.Thesefactsaloneshouldbeenoughtomakeprotectionofchimpsanurgentpriority优先.Butthereisanothermoreselfishreasontopreservethechimp. 3Thechimpanzees’trumpcard王牌comesinthefieldofmedicalresearch.Chimpanzeesaresosimilartohumansthatveterinarians兽医oftenrefertohumanmedicaltextbookswhentreatingthem.Yetchimpanzeesdoshowdifferencesinseveralkeyareas.Inparticularchimpsaremuchmoreresistanttoanumberofmajordiseases.Itisthisabilitythatissointeresting. 4ForexamplechimpsseemtoshowamuchhigherresistancethanhumanstoHIVthevirusthatcausesAIDS.IndeedtheiruseasexperimentalanimalsinAIDSresearchhasdeclinedbecausetheyaresoresistant. 5Bysequencingthechimpgenomeandpinpointing找到theplacewherethechimpanzeeDNAsequencediffersfromthatofhumansscientistshopetobeabletodiscoverwhichpartofthegeneticcodegiveschimpstheirincreasedresistancetosomediseases.Thistheyhopewillallowthemtodevelopnewandmoreeffectivetreatmentsforthehumanformsofthesediseases.Suchtreatmentscouldincludetheproductionofnewdrugsoreventhealteration改变ofthehumangeneticsequence.Therecentlycompletedhumangenomesequencingprojecthasshownthatsuchaneffortisnowwellwithinourreach. 23Paragraph1_________. 24Paragraph2_________. 25Paragraph3_________. 26Paragraph4_________. AReasonsforHIVresistance BImplicationsofchimpanzeeextinctionforhumans CEffectiveAIDStreatment DGeneticsimilaritiesbetweenchimpsandhumans EChimps’resistancetoHIV FGeneticdifferencesbetweenchimpsandhumans 27Chimpanzeeextinctionmayaffect_________. 28Thereisadifferenceoflessthan2%betweenthechimpand_________. 29Scientistssuspectthatgenesplayasignificantroleinprotectingchimpsfromgetting_________. 30Thediscoveryofthegeneticcodeofchimpswillbehelpfulto_________. Asomehumandiseasetreatments Bsomediseases Chumansurvival Dhumangenomes Ekeyareas Fhealthierlifestyle
Chimpanzees 1Chimpanzees黑猩猩willsoonbeextinct灭绝.Ifthepresentrateofhuntingandhabitat栖息地destructioncontinuesthenwithin20yearstherewillbenochimpanzeeslivinginthewild.Butthisismorethananenvironmentalormoraltragedy悲剧.Chimpanzeeextinctionmayalsohaveprofoundimplications含意forthesurvivaloftheirdistantrelatives-humanbeings. 2In1975thebiologistMarie-ClaireKingandAllanWilsondiscoveredthatthehumanandchimpanzeegenomes基因组matchbyover98%.Comparethistothemouseusedasmodelforhumandiseaseinlabtestswhichsharesonly60%ofitsDNAwithus.Infactchimpanzeesarefarmoresimilartohumansthantheyaretoanyotherspeciesofmonkey.Aswellasresemblingusgeneticallychimpsarehighlyintelligentandabletousetools.Thesefactsaloneshouldbeenoughtomakeprotectionofchimpsanurgentpriority优先.Butthereisanothermoreselfishreasontopreservethechimp. 3Thechimpanzees’trumpcard王牌comesinthefieldofmedicalresearch.Chimpanzeesaresosimilartohumansthatveterinarians兽医oftenrefertohumanmedicaltextbookswhentreatingthem.Yetchimpanzeesdoshowdifferencesinseveralkeyareas.Inparticularchimpsaremuchmoreresistanttoanumberofmajordiseases.Itisthisabilitythatissointeresting. 4ForexamplechimpsseemtoshowamuchhigherresistancethanhumanstoHIVthevirusthatcausesAIDS.IndeedtheiruseasexperimentalanimalsinAIDSresearchhasdeclinedbecausetheyaresoresistant. 5Bysequencingthechimpgenomeandpinpointing找到theplacewherethechimpanzeeDNAsequencediffersfromthatofhumansscientistshopetobeabletodiscoverwhichpartofthegeneticcodegiveschimpstheirincreasedresistancetosomediseases.Thistheyhopewillallowthemtodevelopnewandmoreeffectivetreatmentsforthehumanformsofthesediseases.Suchtreatmentscouldincludetheproductionofnewdrugsoreventhealteration改变ofthehumangeneticsequence.Therecentlycompletedhumangenomesequencingprojecthasshownthatsuchaneffortisnowwellwithinourreach. 23Paragraph1_________. 24Paragraph2_________. 25Paragraph3_________. 26Paragraph4_________. AReasonsforHIVresistance BImplicationsofchimpanzeeextinctionforhumans CEffectiveAIDStreatment DGeneticsimilaritiesbetweenchimpsandhumans EChimps’resistancetoHIV FGeneticdifferencesbetweenchimpsandhumans 27Chimpanzeeextinctionmayaffect_________. 28Thereisadifferenceoflessthan2%betweenthechimpand_________. 29Scientistssuspectthatgenesplayasignificantroleinprotectingchimpsfromgetting_________. 30Thediscoveryofthegeneticcodeofchimpswillbehelpfulto_________. Asomehumandiseasetreatments Bsomediseases Chumansurvival Dhumangenomes Ekeyareas Fhealthierlifestyle
Whycan’tyoustopyour{{U}}eternal{{/U}}complaining?
Migrant移民的Workers Inmepasttwentyyearstherehasbeenallincreasingtendencyforworkerstomovefromonecountrytoanother．Whilesomecountrieshaverestricted限制most______51tolocalpeopleothershaveattractedandwelcomedmigrantworkers．ThisisparticularlythecaseintheMiddleEast______52increased0ilincomeshaveenabledmanycountriestocallinoutsiderstoimprovelocalfacilities设施．ThustheMiddleEasthasattractedoil-workers______53theU．S．A．andEurope．Ithasalsobroughtinworkersfrommanyothercountries______54SouthKoreaandJapan． Inviewofthedifficultlivingandworking______55intheMiddleEastitisnot surprisingthatthepayishightoattractsuitableworkers．Manyengineersandtechnicians．Can______56atleasttwiceasmuchmoneyintheMiddleEastastheyCarlintheirOwncountryandthisisamajor______57． Sometimesadisadvantagehasacompensating补偿的advantage．Forexamplethe ______58livingconditionsoftenleadt0increasedfriendshipwhenworkershaveto______59oneachotherforsafetyandcomfort．InasimilarwaymanymigrantworkersCansavelargesumsofmoneypartlybecauseofthe______60ofentertainment娱乐facilities．Theworkisoftencomplexandfullofproblemsbutthismerelypresentsgreaterchallengetoengineerswhoprefertofindsolutionstoproblemsratherthando______61workintheirhomecountry． Onemajorproblemwhich______62migrantworkersintheMiddleEastisthattheirjobsaretemporaryones．Theyarenearlyalwayson______63soitisnoteasyforthemtoplanaheadwithgreatconfidence．Thisistobe______64sincenocountrywelcomesalargenumberofforeignworkersaspermanentresidents．Inany______65migrantworkersacceptthisdisadvantagealong也othersbecauseoftheconsiderablefinancialbenefitswhichtheyreceive．
Migrant移民的Workers Inmepasttwentyyearstherehasbeenallincreasingtendencyforworkerstomovefromonecountrytoanother．Whilesomecountrieshaverestricted限制most______51tolocalpeopleothershaveattractedandwelcomedmigrantworkers．ThisisparticularlythecaseintheMiddleEast______52increased0ilincomeshaveenabledmanycountriestocallinoutsiderstoimprovelocalfacilities设施．ThustheMiddleEasthasattractedoil-workers______53theU．S．A．andEurope．Ithasalsobroughtinworkersfrommanyothercountries______54SouthKoreaandJapan． Inviewofthedifficultlivingandworking______55intheMiddleEastitisnot surprisingthatthepayishightoattractsuitableworkers．Manyengineersandtechnicians．Can______56atleasttwiceasmuchmoneyintheMiddleEastastheyCarlintheirOwncountryandthisisamajor______57． Sometimesadisadvantagehasacompensating补偿的advantage．Forexamplethe ______58livingconditionsoftenleadt0increasedfriendshipwhenworkershaveto______59oneachotherforsafetyandcomfort．InasimilarwaymanymigrantworkersCansavelargesumsofmoneypartlybecauseofthe______60ofentertainment娱乐facilities．Theworkisoftencomplexandfullofproblemsbutthismerelypresentsgreaterchallengetoengineerswhoprefertofindsolutionstoproblemsratherthando______61workintheirhomecountry． Onemajorproblemwhich______62migrantworkersintheMiddleEastisthattheirjobsaretemporaryones．Theyarenearlyalwayson______63soitisnoteasyforthemtoplanaheadwithgreatconfidence．Thisistobe______64sincenocountrywelcomesalargenumberofforeignworkersaspermanentresidents．Inany______65migrantworkersacceptthisdisadvantagealong也othersbecauseoftheconsiderablefinancialbenefitswhichtheyreceive．
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