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1939年，__在总结我党对待资产阶级问题上正反两方面的历史经验后，强调指出：中国__的政治路线的重要一部分，就是既同资产阶级联合又同它斗争的政治路线。他还深刻地指出，以斗争求团结则团结存，以退让...
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一个事物有时可以从正反两方面进行阐述仿照例句另外选择两个事物赋予它们正反两方面的意义例灯蛾为追求光明
试分析张紧力F0对带传动正反两方面的影响
__之所以能够提出实现马克思主义中国化.原因在于
中国革命两次胜利的成功经验
中国革命两次失败的严重教训
中国革命进程中正反两方面的经验教训
延安整风过程中的学习与总结
战国后期礼记中的学记从正反两方面总结了的教育理论和经验系统地阐发了教育的作用和任务以及教育教学的制度
下列思想家中善于从正反两方面思考问题的是
孔子
孟子
墨子
老子
__理论形成的现实依据是
当代国际局势的新发展
我国改革开放和现代化建设的实践
社会主义正反两方面的历史经验的总结
__思想
4试从正反两方面阐释这两段文字所反映的问题
战国后期从正反两方面总结儒家教育理论和经验成为罕见的世界教育思想遗产的著作是
《论语》
《学记》
《中庸》
《孟子》
__认为要大兴之风总结正反两方面经验教训找出社会主义建设的客观规律 制定适合中国情况的方针和政策
调查研究
建设
整顿
改造
一个事物有时可以从正反两方面进行阐述仿照例句另外选择两个事物赋予它们正反两方面的意义6分例灯蛾为追求
战国后期从正反两方面总结儒家的教育理论和经验成为罕见的世界教育思想遗产的著作是
《学记》
《孟子》
《论语》
《中庸》
__之所以提出要实现马克思主义中国化根源在于
中国革命两次胜利的成功经验
中国革命两次失败的严重教训
中国革命进程中正反两方面的实践经验
延安整风过程中的学习与总结
改革开放以来我们总结发展社会主义民主正反两方面的经验教训强调是社会主义的生命坚持国家一切权力属于人民
党的领导
人民民主
无产阶级专政
权力制衡
简述工艺美术运动的影响从正反两方面回答
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Exerciseeveryoneadvises!Butimmediatelywhenyoutryyourunintotrouble.46Thereissomuchcontradictorysometimesincorrectadviceaboutexercisingthatyoubecomeconfused.Testyourselfonthefollowingtruefalsequiz.Itwilltellyouwhatyouneedtoknow. 1.Thebestwaytoreducethemid-sectionistodoabdominalexercise. False.Manypeoplebelievethatwhenspecificmusclesareexercisedthefattytissuesintheimmediateareaare"burnedup."47Thetruth-isthatexerciseburnsfatfromalloverthebodyandnotfromonespecificarearegardlessofthetypeofexercise.Ofcourseifyoureducethefatthroughoutyourbodyyouwillcertainlyseeresultsaroundyourwaistlinetoo! 2.Tomaintainanadequatelevelofphysicalfitnessyouneedtoexerciseonlytwiceaweek. False.StudiesconductedbyNASAtheNationalAeronauticsandSpaceAdministrationshowthatunexercisedmuscleslosetheirstrengthveryquickly.After48to72hoursyoumustusethemusclesagaintoreestablishthegoodphysicaleffect.Andwhatdoesthatmeantoyou48NASAscientistsconcludedthatwhiledailyexerciseismostbeneficialthreealternatingdayseachweekwillmaintainanadequatelevelofphysicalfitness. 3.Toloseweightyoushouldalways"workupagoodsweat"whenexercising. False.Sweatingonlylowersbodytemperaturetopreventoverheating;itdoesnothelpyoureduceweight.Youmayweighlessimmediatelyafteraworkoutbutthisisduetowaterloss.Onceyoureplacetheliquidyoureplacetheweight. 4.Ifyourbreathingdoesn’treturntonormalwithinminutesafteryoufinishexercisingyou’veexercisedtoomuch. True.Fiveminutesorsoafterexercisingyourbreathingshouldbenormalyourheartshouldn’tbepoundingandyoushouldn’tbeexhausted.49Beneficialexerciseisnotoverlydifficultunpleasantandexhausting;itismoderateenjoyableandrefreshing. 5.Walkingisoneofthebestexercises. True.Walkinghelpscirculationofbloodthroughoutthebodyandthushasadirecteffectoryouroverallfeelingofhealth. 6.Theminimumamountoftimeyoushouldspendexercisinginadayis20minutes. True.Therearemorethan400musclesthatattachtoyourskeleton.50Agoodexerciseroutineshouldcontractandstretchallthesemusclesandthissimplycannotbedonewithfourorfiveexercisesinfivetotenminutes.FromexperienceI’vefoundthatabout20minutesistheminimumamountoftimeneededforanadequateworkout. NASAscientistsconcludedthatwhiledailyexerciseismostbeneficialthreealternatingdayseachweekwillmaintainanadequatelevelofphysicalfitness.
Itisoftenobservedthattheagedspendmuchtimethinkingandtalkingabouttheirpastlives1aboutthefuture.Thesereminiscencesarenotsimplyrandomortrivialmemories2istheirpurposemerelytomakeconversation.Theoldperson’srecollectionsofthepasthelpto3anidentitythatisbecomingincreasinglyfragile:4anyrolethatbringsrespectoranygoalthatmightprovide5tothefuturetheindividualmentionstheirpastasaremindertolistenersthatherewasalife6living.7thememoriesformpartofacontinuinglife8inwhichtheoldperson9theeventsandexperiencesoftheyearsgonebyand10ontheoverallmeaningofhisorherownalmostcompletedlife. Asthelifecycle11toitsclosetheagedmustalsolearntoaccepttherealityoftheirownimpendingdeath.12thistaskismadedifficultbythefactthatdeathisalmosta13subjectintheUnitedStates.Themerediscussionofdeathisoftenregardedas14Asadultsmanyofusfindthetopicfrighteningandare15tothinkaboutit—andcertainlynottotalkaboutit16thepresenceofsomeonewhoisdying.Deathhasachievedthistaboo17onlyinthemodernindustrialsocieties.Thereseemstobeanimportantreasonforourreluctanceto18theideaofdeath.Itistheveryfactthatdeathremains19ourcontrol;itisalmosttheonlyoneofthenaturalprocesses20isso. Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCotDonANSWERSHEET1.8
一生产线生产的产品成箱包装每箱的重量是随机的．假设每箱平均重50千克标准差为5千克．若用最大载重为5吨的汽车承运试利用中心极限定理说明每辆最多可以装多少箱才能保障不超载的概率大于0.977φ2=0.977其中φx是标准正态分布函数．
Itisoftenobservedthattheagedspendmuchtimethinkingandtalkingabouttheirpastlives1aboutthefuture.Thesereminiscencesarenotsimplyrandomortrivialmemories2istheirpurposemerelytomakeconversation.Theoldperson’srecollectionsofthepasthelpto3anidentitythatisbecomingincreasinglyfragile:4anyrolethatbringsrespectoranygoalthatmightprovide5tothefuturetheindividualmentionstheirpastasaremindertolistenersthatherewasalife6living.7thememoriesformpartofacontinuinglife8inwhichtheoldperson9theeventsandexperiencesoftheyearsgonebyand10ontheoverallmeaningofhisorherownalmostcompletedlife. Asthelifecycle11toitsclosetheagedmustalsolearntoaccepttherealityoftheirownimpendingdeath.12thistaskismadedifficultbythefactthatdeathisalmosta13subjectintheUnitedStates.Themerediscussionofdeathisoftenregardedas14Asadultsmanyofusfindthetopicfrighteningandare15tothinkaboutit—andcertainlynottotalkaboutit16thepresenceofsomeonewhoisdying.Deathhasachievedthistaboo17onlyinthemodernindustrialsocieties.Thereseemstobeanimportantreasonforourreluctanceto18theideaofdeath.Itistheveryfactthatdeathremains19ourcontrol;itisalmosttheonlyoneofthenaturalprocesses20isso. Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCotDonANSWERSHEET1.18
WhenitcomestotheslowingeconomyEllenSperoisn’tbitinghernailsjustyet.Butthe47-year-oldmanicuristisn’tcuttingfillingorpolishingasmanynailsasshe’dliketoeither.Mostofherclientsspend$12to$50weeklybutlastmonthtwolongtimecustomerssuddenlystoppedshowingup.Speroblamesthesofteningeconomy.I’magoodeconomicindicatorshesays.Iprovideaservicethatpeoplecandowithoutwhenthey’reconcernedaboutsavingsomedollars.SoSperoisdownscalingshoppingatmiddle-browDillard’sdepartmentstorenearhersuburbanClevelandhomeinsteadofNeimanMarcus.Idon’tknowifotherclientsaregoingtoabandonmetooshesays.EvenbeforeAlanGreenspan’sadmissionthatAmerica’sred-hoteconomyiscoolinglotsofworkingfolkshadalreadyseensignsoftheslowdownthemselves.FromcardealershipstoGapoutletssaleshavebeenlaggingformonthsasshopperstempertheirspending.Forretailerswholastyeartookin24percentoftheirrevenuebetweenThanksgivingandChristmasthecautiousapproachiscomingatacrucialtime.Alreadyexpertssayholidaysalesareoff7percentfromlastyear’space.Butdon’tsoundanyalarmsjustyet.Consumersseemonlymildlyconcernednotpanickedandmanysaytheyremainoptimisticabouttheeconomy’slong-termprospectsevenastheydosomemodestbelt-tightening.Consumerssaythey’renotindespairbecausedespitethedreadfulheadlinestheirownfortunesstillfeelprettygood.Homepricesareholdingsteadyinmostregions.InManhattanthere’sanewgoldrushhappeninginthe$4millionto$10millionrangepredominantlyfedbyWallStreetbonusessaysbrokerBarbaraCorcoran.InSanFranciscopricesarestillrisingevenasfrenziedoverbiddingquiets.Insteadof20to30offersnowmaybeyouonlygettwoorthreesaysJohnTealdiaBayAreareal-estatebroker.Andmostfolksstillfeelprettycomfortableabouttheirabilitytofindandkeepajob.Manyfolksseesilverliningstothisslowdown.Potentialhomebuyerswouldcheerforlowerinterestrates.Employerswouldn’tmindalittlefewerbubblesinthejobmarket.Manyconsumersseemtohavebeeninfluencedbystock-marketswingswhichinvestorsnowviewasanecessaryingredienttoasustainedboom.Dinersmightseeanupsidetoo.GettingatableatManhattan’shotnewAlainDucasserestaurantusedtobeimpossible.Notanymore.ForthatGreenspan~Co.maystillbeworthtoasting.ByEllenSperoisn’tbitinghernailsjustyetLine1Para.1theauthormeans______.
HowefficientisoursystemofcriminaltrialDoesitreallydothebasicjobweaskofit—convictingtheguiltyandacquittingtheinnocentItisoftensaidthattheBritishtrailsystemismorelikeagamethanaseriousattempttodojustice.Thelawyersoneachsidearesoengrossesinplayinghardtowinchallengingeachotherandthejudgeontechnicalpointsthattheobjectoffindingoutthetruthisalmostforgotten.Alltheeffortisconcentratedonthebigdayonthedramaticcrossexaminationofthekeywitnessesinfrontofthejury.Criticsliketocompareouradversarialsystemresemblingtwoadversariesengagedinacontestwiththecontinentalinquisitorialsystemunderwhichthejudgeplaysamoreimportantinquiringrole.InearlytimesintheMiddleAgesthesystemsoftrialacrossEuropewere’similar.Atthattimetrialbyordeal—especiallyareligiousevent--wasthemainwayoftestingguiltorinnocence.Whenthiswayeventuallyabandonedthetwosystemspartedcompany.Onthecontinentchurch-trainedlegalofficialstookoverthefunctionofbothprosecutingandjudgingwhileinEnglandthesewerelargelylefttolaypeopletheJusticeofthePeaceandthejurymenwhowereilliterateandthismeantthatalltheevidencehadtobeputtothemorally.Thishistoricalaccidentdominatesprocedureeventodaywithallevidencebeinggiveninopencourtbywordofmouthonthecrucialday.OntheotherhandinFranceforinstancealltheevidenceiswrittenbeforethetrialundersupervisionbyaninvestigatingjudge.Thisexhaustivepretriallooksveryundramatic;muchofitisjustapubliccheckingofthewrittenrecordsalreadygathered.TheAmericansadoptedtheBritishsystemlockstockandbarrelandenshrineditintheirconstitution.Butwhilethebasicfeaturesofoursystemsarecommontherearenowsignificantdifferencesinthewayseriouscasesarehandled.FirstbecausetheU.S.A.hasvirtuallynocontemptofcourtlawstopreventpretrialpublicityinthenewspaperandontelevisionAmericanslawyersareallowedtoquestionjurorsaboutknowledgeandbeliefs.InBritainthisisvirtuallyneverallowedandarandomselectionofjurorswhoarepresumednottobeprejudicedareempanelled.SecondlythereisnoseparateprofessionofbarristerintheUnitedStatesandbothprosecutionanddefenselawyerswhoaretopresentcasesincourtpreparethemselves.Theygooutandvisitthescenetrackdownandinterviewwitnessesandfamiliarizethemselvespersonallywiththebackground.InBritainitisthesolicitorwhopreparesthecaseandthebarristerwhoappearsincourtisnotevenallowedtomeetwitnessbeforehandBritishbarristersalsoalternatedoingbothprosecutionanddefensework.Beingkeptdistantfromthepreparationandregularlyappearingforbothsidesbarristersaresaidtoavoidbecomingtoopersonallyinvolvedandcanapproachcasesmoredispassionately.Americanlawyershoweveroftenknowtheircasesbetter.Reformersrightlywanttolearnfromothercountries~mistakesandsuccesses.Butwhatisclearisthatjusticesystemslargelybecausetheyaretheresultoflonghistoricalgrowtharepeculiarlydifficulttoadaptpiecemeal.WhichofthefollowingsentencesisNOTtrue
Itisoftenobservedthattheagedspendmuchtimethinkingandtalkingabouttheirpastlives1aboutthefuture.Thesereminiscencesarenotsimplyrandomortrivialmemories2istheirpurposemerelytomakeconversation.Theoldperson’srecollectionsofthepasthelpto3anidentitythatisbecomingincreasinglyfragile:4anyrolethatbringsrespectoranygoalthatmightprovide5tothefuturetheindividualmentionstheirpastasaremindertolistenersthatherewasalife6living.7thememoriesformpartofacontinuinglife8inwhichtheoldperson9theeventsandexperiencesoftheyearsgonebyand10ontheoverallmeaningofhisorherownalmostcompletedlife. Asthelifecycle11toitsclosetheagedmustalsolearntoaccepttherealityoftheirownimpendingdeath.12thistaskismadedifficultbythefactthatdeathisalmosta13subjectintheUnitedStates.Themerediscussionofdeathisoftenregardedas14Asadultsmanyofusfindthetopicfrighteningandare15tothinkaboutit—andcertainlynottotalkaboutit16thepresenceofsomeonewhoisdying.Deathhasachievedthistaboo17onlyinthemodernindustrialsocieties.Thereseemstobeanimportantreasonforourreluctanceto18theideaofdeath.Itistheveryfactthatdeathremains19ourcontrol;itisalmosttheonlyoneofthenaturalprocesses20isso. Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCotDonANSWERSHEET1.20
Itisoftenobservedthattheagedspendmuchtimethinkingandtalkingabouttheirpastlives1aboutthefuture.Thesereminiscencesarenotsimplyrandomortrivialmemories2istheirpurposemerelytomakeconversation.Theoldperson’srecollectionsofthepasthelpto3anidentitythatisbecomingincreasinglyfragile:4anyrolethatbringsrespectoranygoalthatmightprovide5tothefuturetheindividualmentionstheirpastasaremindertolistenersthatherewasalife6living.7thememoriesformpartofacontinuinglife8inwhichtheoldperson9theeventsandexperiencesoftheyearsgonebyand10ontheoverallmeaningofhisorherownalmostcompletedlife. Asthelifecycle11toitsclosetheagedmustalsolearntoaccepttherealityoftheirownimpendingdeath.12thistaskismadedifficultbythefactthatdeathisalmosta13subjectintheUnitedStates.Themerediscussionofdeathisoftenregardedas14Asadultsmanyofusfindthetopicfrighteningandare15tothinkaboutit—andcertainlynottotalkaboutit16thepresenceofsomeonewhoisdying.Deathhasachievedthistaboo17onlyinthemodernindustrialsocieties.Thereseemstobeanimportantreasonforourreluctanceto18theideaofdeath.Itistheveryfactthatdeathremains19ourcontrol;itisalmosttheonlyoneofthenaturalprocesses20isso. Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCotDonANSWERSHEET1.12
Exerciseeveryoneadvises!Butimmediatelywhenyoutryyourunintotrouble.46Thereissomuchcontradictorysometimesincorrectadviceaboutexercisingthatyoubecomeconfused.Testyourselfonthefollowingtruefalsequiz.Itwilltellyouwhatyouneedtoknow. 1.Thebestwaytoreducethemid-sectionistodoabdominalexercise. False.Manypeoplebelievethatwhenspecificmusclesareexercisedthefattytissuesintheimmediateareaare"burnedup."47Thetruth-isthatexerciseburnsfatfromalloverthebodyandnotfromonespecificarearegardlessofthetypeofexercise.Ofcourseifyoureducethefatthroughoutyourbodyyouwillcertainlyseeresultsaroundyourwaistlinetoo! 2.Tomaintainanadequatelevelofphysicalfitnessyouneedtoexerciseonlytwiceaweek. False.StudiesconductedbyNASAtheNationalAeronauticsandSpaceAdministrationshowthatunexercisedmuscleslosetheirstrengthveryquickly.After48to72hoursyoumustusethemusclesagaintoreestablishthegoodphysicaleffect.Andwhatdoesthatmeantoyou48NASAscientistsconcludedthatwhiledailyexerciseismostbeneficialthreealternatingdayseachweekwillmaintainanadequatelevelofphysicalfitness. 3.Toloseweightyoushouldalways"workupagoodsweat"whenexercising. False.Sweatingonlylowersbodytemperaturetopreventoverheating;itdoesnothelpyoureduceweight.Youmayweighlessimmediatelyafteraworkoutbutthisisduetowaterloss.Onceyoureplacetheliquidyoureplacetheweight. 4.Ifyourbreathingdoesn’treturntonormalwithinminutesafteryoufinishexercisingyou’veexercisedtoomuch. True.Fiveminutesorsoafterexercisingyourbreathingshouldbenormalyourheartshouldn’tbepoundingandyoushouldn’tbeexhausted.49Beneficialexerciseisnotoverlydifficultunpleasantandexhausting;itismoderateenjoyableandrefreshing. 5.Walkingisoneofthebestexercises. True.Walkinghelpscirculationofbloodthroughoutthebodyandthushasadirecteffectoryouroverallfeelingofhealth. 6.Theminimumamountoftimeyoushouldspendexercisinginadayis20minutes. True.Therearemorethan400musclesthatattachtoyourskeleton.50Agoodexerciseroutineshouldcontractandstretchallthesemusclesandthissimplycannotbedonewithfourorfiveexercisesinfivetotenminutes.FromexperienceI’vefoundthatabout20minutesistheminimumamountoftimeneededforanadequateworkout. Thereissomuchcontradictorysometimesincorrectadviceaboutexercisingthatyoubecomeconfused
Itisoftenobservedthattheagedspendmuchtimethinkingandtalkingabouttheirpastlives1aboutthefuture.Thesereminiscencesarenotsimplyrandomortrivialmemories2istheirpurposemerelytomakeconversation.Theoldperson’srecollectionsofthepasthelpto3anidentitythatisbecomingincreasinglyfragile:4anyrolethatbringsrespectoranygoalthatmightprovide5tothefuturetheindividualmentionstheirpastasaremindertolistenersthatherewasalife6living.7thememoriesformpartofacontinuinglife8inwhichtheoldperson9theeventsandexperiencesoftheyearsgonebyand10ontheoverallmeaningofhisorherownalmostcompletedlife. Asthelifecycle11toitsclosetheagedmustalsolearntoaccepttherealityoftheirownimpendingdeath.12thistaskismadedifficultbythefactthatdeathisalmosta13subjectintheUnitedStates.Themerediscussionofdeathisoftenregardedas14Asadultsmanyofusfindthetopicfrighteningandare15tothinkaboutit—andcertainlynottotalkaboutit16thepresenceofsomeonewhoisdying.Deathhasachievedthistaboo17onlyinthemodernindustrialsocieties.Thereseemstobeanimportantreasonforourreluctanceto18theideaofdeath.Itistheveryfactthatdeathremains19ourcontrol;itisalmosttheonlyoneofthenaturalprocesses20isso. Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCotDonANSWERSHEET1.6
Atpicnicsantsarepests.Buttheyhavetheiruses.Inindustriessuchasminingfarmingandforestrytheycanhelpgaugethehealthoftheenvironmentbyjustcrawlingaroundandbeingantsy. Ithasbeenrecognizedfordecadesthatants--whicharehighlysensitivetoecologicalchange—canprovideanear-percentbarometerofthestateofanecosystem.Onlycertainspeciesforinstancewillcontinuetothriveataforestsitethathasbeenclearedoftrees.41Andstillotherswillmoveinandtakeupresidence. Bylookingatwhichspeciespopulateadeforestedareascientistscandeterminehow"stressed"thelandis.42Antsareusedsimplybecausethe>;aresocommonandcomprisesomanyspecies. Whereminesitesarebeingrestoredforexamplesomeantspecieswillrecolonizethestrippedlandmorequicklythanothers.43AustralianminingcompanyCapricornCoalManagementhasbeensuccessfullyusingantsurveysforyearstodeterminetherateofrecoveryoflandthatitisreplantingnearitsGermanCreekmineinQueensland.Antsurveysalsohavebeenusedwithmine-siterecoveryprojectsinAfricaandBrazilwherewarmclimatesencouragedenseanddiverseantpopulations."Wefounditworkedextremelywellthere’saysJonathanMajeraprofessorofenvironmentalbiology.YetthesurveysareperfectlysuitedtoclimatesthroughoutAsiahesaysbecauseantsaresocommonthroughouttheregion.AsMajerputsit."That’sthegreatthingaboutants.’ Antsurveysaresohighly-regardedasecologicalindicatorsthatgovernmentsworldwideaccepttheirresultswhenassessingtheenvironmentalimpactofminingandtreeharvesting.44. WhynotBecausemanycompaniescan’taffordtheexpenseorthelaboratorytimeneededtosiftresultsforacomprehensivesurvey.Thecoststemsalsofromthescarcityofantspecialists.45. [A]Thisallowedscientiststogaugethepaceandprogressoftheecologicalrecovery. [B]Yetinotherbusinessessuchasfarmingandpropertydevelopmentantsurveysaren’tusedwidely. [C]Employingthosepeopleareexpensive. [D]Theydothisbysortingtheantscountingtheirnumbersandcomparingtheresultswiththoseofearliersurveys. [E]Theevolutionofantspeciesmayhaveastrongimpactonourecosystem. [F]Otherswilldieoutforlackoffood.’ [G]Gretaceousantssharedacoupleofwasp-liketraitstogetherwithmodernant-likecharacteristics. 44
Thequestionofwhetherwarisinevitableisonewhichhasconcernedmanyoftheworld’sgreatwriters.Beforeconsideringthisquestionitwillbeusefultointroducesomerelatedconcepts.Conflictdefinedasoppositionamongsocialentitiesdirectedagainstoneanotherisdistinguishedfromcompetitiondefinedasoppositionamongsocialentitiesindependentlystrivingforsomethingwhichisininadequateaupply.Competitorsmaynotbeawareofoneanotherwhilethepartiestoaconflictare.Conflictandcompetitionarebothcategoriesofoppositionwhichhasbeendefinedasaprocessbywhichsocialentitiesfunctionisthedisserviceofoneanother.Oppositionisthuscontrastedwithcooperationtheprocessbywhichsocialentitiesfunctionintheserviceofoneanother.Thesedefinitionsarenecessarybecauseitisimportanttoemphasizethatcompetitionbetweenindividualsorgroupsininevitableinaworldoflimitedresourcesbutconflictisnot.Conflictneverthelessisverylikelytooccurandisprobablyanessentialanddesirableelementofhumansocieties.Manyauthorshavearguedfortheinevitabilityofwarfromthepremisethatinthestruggleforexistenceamonganimalspecies0nlythefittestsurvive.Ingeneralhoweverthisstruggleinnatureiscompetitionnotconflict.Socialanimalssuchasmonkeysandcattlefighttowinormaintainleadershipofthegroup.Thestruggleforexistenceoccursnotinsuchfightsbutinthecompetitionforlimitedfeedingareasandforoccupancyofareasfreefrommeat-eatinganimals.Thosewhofailinthiscompetitionstarvetodeathorbecomevictimstootherspecies.Thisstruggleforexistencedoesnotresemblehumanwarbutratherthecompetitionofindividualsforjobsmarketsandmaterials.Theessenceofthestruggleisthecompetitionforthenecessitiesoflifethatareinsufficienttosatisfyall.Amongnationsthereiscompetitionindevelopingresourcestradesskillsandasatisfactorywayoflife.Thesuccessfulnationsgrowandprosper;theunsuccessfuldecline.Whileitistruethatthiscompetitionmayinduceeffortstoexpandterritoryattheexpenseofothersandthusleadtoconflictitcannotbesaidthatwar-likeconflictamongnationsisinevitablealthoughcompetitionis.Thepassageisprobablyintendedtoanswerthequestion______.
WhenitcomestotheslowingeconomyEllenSperoisn’tbitinghernailsjustyet.Butthe47-year-oldmanicuristisn’tcuttingfillingorpolishingasmanynailsasshe’dliketoeither.Mostofherclientsspend$12to$50weeklybutlastmonthtwolongtimecustomerssuddenlystoppedshowingup.Speroblamesthesofteningeconomy.I’magoodeconomicindicatorshesays.Iprovideaservicethatpeoplecandowithoutwhenthey’reconcernedaboutsavingsomedollars.SoSperoisdownscalingshoppingatmiddle-browDillard’sdepartmentstorenearhersuburbanClevelandhomeinsteadofNeimanMarcus.Idon’tknowifotherclientsaregoingtoabandonmetooshesays.EvenbeforeAlanGreenspan’sadmissionthatAmerica’sred-hoteconomyiscoolinglotsofworkingfolkshadalreadyseensignsoftheslowdownthemselves.FromcardealershipstoGapoutletssaleshavebeenlaggingformonthsasshopperstempertheirspending.Forretailerswholastyeartookin24percentoftheirrevenuebetweenThanksgivingandChristmasthecautiousapproachiscomingatacrucialtime.Alreadyexpertssayholidaysalesareoff7percentfromlastyear’space.Butdon’tsoundanyalarmsjustyet.Consumersseemonlymildlyconcernednotpanickedandmanysaytheyremainoptimisticabouttheeconomy’slong-termprospectsevenastheydosomemodestbelt-tightening.Consumerssaythey’renotindespairbecausedespitethedreadfulheadlinestheirownfortunesstillfeelprettygood.Homepricesareholdingsteadyinmostregions.InManhattanthere’sanewgoldrushhappeninginthe$4millionto$10millionrangepredominantlyfedbyWallStreetbonusessaysbrokerBarbaraCorcoran.InSanFranciscopricesarestillrisingevenasfrenziedoverbiddingquiets.Insteadof20to30offersnowmaybeyouonlygettwoorthreesaysJohnTealdiaBayAreareal-estatebroker.Andmostfolksstillfeelprettycomfortableabouttheirabilitytofindandkeepajob.Manyfolksseesilverliningstothisslowdown.Potentialhomebuyerswouldcheerforlowerinterestrates.Employerswouldn’tmindalittlefewerbubblesinthejobmarket.Manyconsumersseemtohavebeeninfluencedbystock-marketswingswhichinvestorsnowviewasanecessaryingredienttoasustainedboom.Dinersmightseeanupsidetoo.GettingatableatManhattan’shotnewAlainDucasserestaurantusedtobeimpossible.Notanymore.ForthatGreenspan~Co.maystillbeworthtoasting.Whenmentioningthe$4millionto$10millionrangeLines4Para.3theauthoristalkingabout______.
设含n个方程的齐次线性方程组其中a≠0b≠0n≥2．试讨论ab为何值时方程组仅有零解无穷多组解在有无穷多解时求出全部解并用基础解系表示全部解
Itisoftenobservedthattheagedspendmuchtimethinkingandtalkingabouttheirpastlives1aboutthefuture.Thesereminiscencesarenotsimplyrandomortrivialmemories2istheirpurposemerelytomakeconversation.Theoldperson’srecollectionsofthepasthelpto3anidentitythatisbecomingincreasinglyfragile:4anyrolethatbringsrespectoranygoalthatmightprovide5tothefuturetheindividualmentionstheirpastasaremindertolistenersthatherewasalife6living.7thememoriesformpartofacontinuinglife8inwhichtheoldperson9theeventsandexperiencesoftheyearsgonebyand10ontheoverallmeaningofhisorherownalmostcompletedlife. Asthelifecycle11toitsclosetheagedmustalsolearntoaccepttherealityoftheirownimpendingdeath.12thistaskismadedifficultbythefactthatdeathisalmosta13subjectintheUnitedStates.Themerediscussionofdeathisoftenregardedas14Asadultsmanyofusfindthetopicfrighteningandare15tothinkaboutit—andcertainlynottotalkaboutit16thepresenceofsomeonewhoisdying.Deathhasachievedthistaboo17onlyinthemodernindustrialsocieties.Thereseemstobeanimportantreasonforourreluctanceto18theideaofdeath.Itistheveryfactthatdeathremains19ourcontrol;itisalmosttheonlyoneofthenaturalprocesses20isso. Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCotDonANSWERSHEET1.2
Thequestionofwhetherwarisinevitableisonewhichhasconcernedmanyoftheworld’sgreatwriters.Beforeconsideringthisquestionitwillbeusefultointroducesomerelatedconcepts.Conflictdefinedasoppositionamongsocialentitiesdirectedagainstoneanotherisdistinguishedfromcompetitiondefinedasoppositionamongsocialentitiesindependentlystrivingforsomethingwhichisininadequateaupply.Competitorsmaynotbeawareofoneanotherwhilethepartiestoaconflictare.Conflictandcompetitionarebothcategoriesofoppositionwhichhasbeendefinedasaprocessbywhichsocialentitiesfunctionisthedisserviceofoneanother.Oppositionisthuscontrastedwithcooperationtheprocessbywhichsocialentitiesfunctionintheserviceofoneanother.Thesedefinitionsarenecessarybecauseitisimportanttoemphasizethatcompetitionbetweenindividualsorgroupsininevitableinaworldoflimitedresourcesbutconflictisnot.Conflictneverthelessisverylikelytooccurandisprobablyanessentialanddesirableelementofhumansocieties.Manyauthorshavearguedfortheinevitabilityofwarfromthepremisethatinthestruggleforexistenceamonganimalspecies0nlythefittestsurvive.Ingeneralhoweverthisstruggleinnatureiscompetitionnotconflict.Socialanimalssuchasmonkeysandcattlefighttowinormaintainleadershipofthegroup.Thestruggleforexistenceoccursnotinsuchfightsbutinthecompetitionforlimitedfeedingareasandforoccupancyofareasfreefrommeat-eatinganimals.Thosewhofailinthiscompetitionstarvetodeathorbecomevictimstootherspecies.Thisstruggleforexistencedoesnotresemblehumanwarbutratherthecompetitionofindividualsforjobsmarketsandmaterials.Theessenceofthestruggleisthecompetitionforthenecessitiesoflifethatareinsufficienttosatisfyall.Amongnationsthereiscompetitionindevelopingresourcestradesskillsandasatisfactorywayoflife.Thesuccessfulnationsgrowandprosper;theunsuccessfuldecline.Whileitistruethatthiscompetitionmayinduceeffortstoexpandterritoryattheexpenseofothersandthusleadtoconflictitcannotbesaidthatwar-likeconflictamongnationsisinevitablealthoughcompetitionis.ThephrasefunctioninthedisserviceofoneanotherPara.1mostprobablymeans______.
计算二重积分其中D是由x轴y轴与曲线所围成的区域a＞0b＞0
WhenitcomestotheslowingeconomyEllenSperoisn’tbitinghernailsjustyet.Butthe47-year-oldmanicuristisn’tcuttingfillingorpolishingasmanynailsasshe’dliketoeither.Mostofherclientsspend$12to$50weeklybutlastmonthtwolongtimecustomerssuddenlystoppedshowingup.Speroblamesthesofteningeconomy.I’magoodeconomicindicatorshesays.Iprovideaservicethatpeoplecandowithoutwhenthey’reconcernedaboutsavingsomedollars.SoSperoisdownscalingshoppingatmiddle-browDillard’sdepartmentstorenearhersuburbanClevelandhomeinsteadofNeimanMarcus.Idon’tknowifotherclientsaregoingtoabandonmetooshesays.EvenbeforeAlanGreenspan’sadmissionthatAmerica’sred-hoteconomyiscoolinglotsofworkingfolkshadalreadyseensignsoftheslowdownthemselves.FromcardealershipstoGapoutletssaleshavebeenlaggingformonthsasshopperstempertheirspending.Forretailerswholastyeartookin24percentoftheirrevenuebetweenThanksgivingandChristmasthecautiousapproachiscomingatacrucialtime.Alreadyexpertssayholidaysalesareoff7percentfromlastyear’space.Butdon’tsoundanyalarmsjustyet.Consumersseemonlymildlyconcernednotpanickedandmanysaytheyremainoptimisticabouttheeconomy’slong-termprospectsevenastheydosomemodestbelt-tightening.Consumerssaythey’renotindespairbecausedespitethedreadfulheadlinestheirownfortunesstillfeelprettygood.Homepricesareholdingsteadyinmostregions.InManhattanthere’sanewgoldrushhappeninginthe$4millionto$10millionrangepredominantlyfedbyWallStreetbonusessaysbrokerBarbaraCorcoran.InSanFranciscopricesarestillrisingevenasfrenziedoverbiddingquiets.Insteadof20to30offersnowmaybeyouonlygettwoorthreesaysJohnTealdiaBayAreareal-estatebroker.Andmostfolksstillfeelprettycomfortableabouttheirabilitytofindandkeepajob.Manyfolksseesilverliningstothisslowdown.Potentialhomebuyerswouldcheerforlowerinterestrates.Employerswouldn’tmindalittlefewerbubblesinthejobmarket.Manyconsumersseemtohavebeeninfluencedbystock-marketswingswhichinvestorsnowviewasanecessaryingredienttoasustainedboom.Dinersmightseeanupsidetoo.GettingatableatManhattan’shotnewAlainDucasserestaurantusedtobeimpossible.Notanymore.ForthatGreenspan~Co.maystillbeworthtoasting.Towhichofthefollowingistheauthorlikelytoagree
Itisoftenobservedthattheagedspendmuchtimethinkingandtalkingabouttheirpastlives1aboutthefuture.Thesereminiscencesarenotsimplyrandomortrivialmemories2istheirpurposemerelytomakeconversation.Theoldperson’srecollectionsofthepasthelpto3anidentitythatisbecomingincreasinglyfragile:4anyrolethatbringsrespectoranygoalthatmightprovide5tothefuturetheindividualmentionstheirpastasaremindertolistenersthatherewasalife6living.7thememoriesformpartofacontinuinglife8inwhichtheoldperson9theeventsandexperiencesoftheyearsgonebyand10ontheoverallmeaningofhisorherownalmostcompletedlife. Asthelifecycle11toitsclosetheagedmustalsolearntoaccepttherealityoftheirownimpendingdeath.12thistaskismadedifficultbythefactthatdeathisalmosta13subjectintheUnitedStates.Themerediscussionofdeathisoftenregardedas14Asadultsmanyofusfindthetopicfrighteningandare15tothinkaboutit—andcertainlynottotalkaboutit16thepresenceofsomeonewhoisdying.Deathhasachievedthistaboo17onlyinthemodernindustrialsocieties.Thereseemstobeanimportantreasonforourreluctanceto18theideaofdeath.Itistheveryfactthatdeathremains19ourcontrol;itisalmosttheonlyoneofthenaturalprocesses20isso. Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCotDonANSWERSHEET1.16
Itisoftenobservedthattheagedspendmuchtimethinkingandtalkingabouttheirpastlives1aboutthefuture.Thesereminiscencesarenotsimplyrandomortrivialmemories2istheirpurposemerelytomakeconversation.Theoldperson’srecollectionsofthepasthelpto3anidentitythatisbecomingincreasinglyfragile:4anyrolethatbringsrespectoranygoalthatmightprovide5tothefuturetheindividualmentionstheirpastasaremindertolistenersthatherewasalife6living.7thememoriesformpartofacontinuinglife8inwhichtheoldperson9theeventsandexperiencesoftheyearsgonebyand10ontheoverallmeaningofhisorherownalmostcompletedlife. Asthelifecycle11toitsclosetheagedmustalsolearntoaccepttherealityoftheirownimpendingdeath.12thistaskismadedifficultbythefactthatdeathisalmosta13subjectintheUnitedStates.Themerediscussionofdeathisoftenregardedas14Asadultsmanyofusfindthetopicfrighteningandare15tothinkaboutit—andcertainlynottotalkaboutit16thepresenceofsomeonewhoisdying.Deathhasachievedthistaboo17onlyinthemodernindustrialsocieties.Thereseemstobeanimportantreasonforourreluctanceto18theideaofdeath.Itistheveryfactthatdeathremains19ourcontrol;itisalmosttheonlyoneofthenaturalprocesses20isso. Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCotDonANSWERSHEET1.14
Exerciseeveryoneadvises!Butimmediatelywhenyoutryyourunintotrouble.46Thereissomuchcontradictorysometimesincorrectadviceaboutexercisingthatyoubecomeconfused.Testyourselfonthefollowingtruefalsequiz.Itwilltellyouwhatyouneedtoknow. 1.Thebestwaytoreducethemid-sectionistodoabdominalexercise. False.Manypeoplebelievethatwhenspecificmusclesareexercisedthefattytissuesintheimmediateareaare"burnedup."47Thetruth-isthatexerciseburnsfatfromalloverthebodyandnotfromonespecificarearegardlessofthetypeofexercise.Ofcourseifyoureducethefatthroughoutyourbodyyouwillcertainlyseeresultsaroundyourwaistlinetoo! 2.Tomaintainanadequatelevelofphysicalfitnessyouneedtoexerciseonlytwiceaweek. False.StudiesconductedbyNASAtheNationalAeronauticsandSpaceAdministrationshowthatunexercisedmuscleslosetheirstrengthveryquickly.After48to72hoursyoumustusethemusclesagaintoreestablishthegoodphysicaleffect.Andwhatdoesthatmeantoyou48NASAscientistsconcludedthatwhiledailyexerciseismostbeneficialthreealternatingdayseachweekwillmaintainanadequatelevelofphysicalfitness. 3.Toloseweightyoushouldalways"workupagoodsweat"whenexercising. False.Sweatingonlylowersbodytemperaturetopreventoverheating;itdoesnothelpyoureduceweight.Youmayweighlessimmediatelyafteraworkoutbutthisisduetowaterloss.Onceyoureplacetheliquidyoureplacetheweight. 4.Ifyourbreathingdoesn’treturntonormalwithinminutesafteryoufinishexercisingyou’veexercisedtoomuch. True.Fiveminutesorsoafterexercisingyourbreathingshouldbenormalyourheartshouldn’tbepoundingandyoushouldn’tbeexhausted.49Beneficialexerciseisnotoverlydifficultunpleasantandexhausting;itismoderateenjoyableandrefreshing. 5.Walkingisoneofthebestexercises. True.Walkinghelpscirculationofbloodthroughoutthebodyandthushasadirecteffectoryouroverallfeelingofhealth. 6.Theminimumamountoftimeyoushouldspendexercisinginadayis20minutes. True.Therearemorethan400musclesthatattachtoyourskeleton.50Agoodexerciseroutineshouldcontractandstretchallthesemusclesandthissimplycannotbedonewithfourorfiveexercisesinfivetotenminutes.FromexperienceI’vefoundthatabout20minutesistheminimumamountoftimeneededforanadequateworkout. Agoodexerciseroutineshouldcontractandstretchallthesemusclesandthissimplycannotbedonewithfourorfiveexercisesinfivetotenminutes.
Thequestionofwhetherwarisinevitableisonewhichhasconcernedmanyoftheworld’sgreatwriters.Beforeconsideringthisquestionitwillbeusefultointroducesomerelatedconcepts.Conflictdefinedasoppositionamongsocialentitiesdirectedagainstoneanotherisdistinguishedfromcompetitiondefinedasoppositionamongsocialentitiesindependentlystrivingforsomethingwhichisininadequateaupply.Competitorsmaynotbeawareofoneanotherwhilethepartiestoaconflictare.Conflictandcompetitionarebothcategoriesofoppositionwhichhasbeendefinedasaprocessbywhichsocialentitiesfunctionisthedisserviceofoneanother.Oppositionisthuscontrastedwithcooperationtheprocessbywhichsocialentitiesfunctionintheserviceofoneanother.Thesedefinitionsarenecessarybecauseitisimportanttoemphasizethatcompetitionbetweenindividualsorgroupsininevitableinaworldoflimitedresourcesbutconflictisnot.Conflictneverthelessisverylikelytooccurandisprobablyanessentialanddesirableelementofhumansocieties.Manyauthorshavearguedfortheinevitabilityofwarfromthepremisethatinthestruggleforexistenceamonganimalspecies0nlythefittestsurvive.Ingeneralhoweverthisstruggleinnatureiscompetitionnotconflict.Socialanimalssuchasmonkeysandcattlefighttowinormaintainleadershipofthegroup.Thestruggleforexistenceoccursnotinsuchfightsbutinthecompetitionforlimitedfeedingareasandforoccupancyofareasfreefrommeat-eatinganimals.Thosewhofailinthiscompetitionstarvetodeathorbecomevictimstootherspecies.Thisstruggleforexistencedoesnotresemblehumanwarbutratherthecompetitionofindividualsforjobsmarketsandmaterials.Theessenceofthestruggleisthecompetitionforthenecessitiesoflifethatareinsufficienttosatisfyall.Amongnationsthereiscompetitionindevelopingresourcestradesskillsandasatisfactorywayoflife.Thesuccessfulnationsgrowandprosper;theunsuccessfuldecline.Whileitistruethatthiscompetitionmayinduceeffortstoexpandterritoryattheexpenseofothersandthusleadtoconflictitcannotbesaidthatwar-likeconflictamongnationsisinevitablealthoughcompetitionis.Inthefirstparagraphtheauthorgivesthedefinitionsofsometermsinorderto______.
Sixyearslaterinanabout-facetheFBIadmitsthatfederalagentsfiredteargascanisterscapableofcausingafireattheBranchDavidiancompoundnearWacoTexasin1993.Buttheofficialsaidthefiringcameseveralhoursbeforethestructureburstintoflameskilling80peopleincludingtheDavidians’leaderDavidKoresh.Inlookingintothiswe’vecomeacrossinformationthatshowssomecanistersthatcanbedeemedpyrotechnicinnaturewerefired--hoursbeforethefirestartedtheofficialsaid.DeviceswerefiredatthebunkernotatthemainstructurewheretheDavidianswerecampedout.TheFederalBureauofInvestigationmaintainsitdidnotstartwhatturnedtobeaseriesoffieryburstsofflamesthatendeda51-daystandoffbetweenbranchmembersandthefederalgovernment.Thisdoesn’tchangethebottomlinethatDavidKoreshstartedthefireandthegovernmentdidnottheofficialsaid.ItsimplyShowsthatdevicesthatcouldprobablybeflammablewereusedintheearlymorninghours.ThelawenforcementofficialsaidthecanisterswerefirednotatthemainstructurewheretheDavidianmemberswerecampedoutbutatthenearbyundergroundbunker.Theybouncedoffthebunker’sconcreteroofandlandedinanopenfieldwelltheofficialsaid.Thecanisterswerefiredataround6a.m.andthefirethatdestroyedthewoodencompoundstartedaroundnoontheofficialsaid.Theofficialalsoaddedthatotherteargascanistersusedbyagentthatdaywerenotflammableorpotentiallyexplosive.WhileCoulsondeniedthegrenadesplayedaroleinstartingthefirehisstatementmarkedthefirsttimethatanyU.S.governmentofficialhaspubliclycontradictedthegovernment’spositionthatfederalagentsusednothingonthefinaldayofthesiegeatWacothatcouldhavesparkedthefirethatengulfedthecompound.ThecauseofthefieryendisamajorfocusofanongoinginquirybytheTexasRangersintotheWacosiege.Coulson’sspeechhas______.
Itisoftenobservedthattheagedspendmuchtimethinkingandtalkingabouttheirpastlives1aboutthefuture.Thesereminiscencesarenotsimplyrandomortrivialmemories2istheirpurposemerelytomakeconversation.Theoldperson’srecollectionsofthepasthelpto3anidentitythatisbecomingincreasinglyfragile:4anyrolethatbringsrespectoranygoalthatmightprovide5tothefuturetheindividualmentionstheirpastasaremindertolistenersthatherewasalife6living.7thememoriesformpartofacontinuinglife8inwhichtheoldperson9theeventsandexperiencesoftheyearsgonebyand10ontheoverallmeaningofhisorherownalmostcompletedlife. Asthelifecycle11toitsclosetheagedmustalsolearntoaccepttherealityoftheirownimpendingdeath.12thistaskismadedifficultbythefactthatdeathisalmosta13subjectintheUnitedStates.Themerediscussionofdeathisoftenregardedas14Asadultsmanyofusfindthetopicfrighteningandare15tothinkaboutit—andcertainlynottotalkaboutit16thepresenceofsomeonewhoisdying.Deathhasachievedthistaboo17onlyinthemodernindustrialsocieties.Thereseemstobeanimportantreasonforourreluctanceto18theideaofdeath.Itistheveryfactthatdeathremains19ourcontrol;itisalmosttheonlyoneofthenaturalprocesses20isso. Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCotDonANSWERSHEET1.4
设有来自三个地区的各10名15名和25名考生的报名表其中女生的报名表分别为3份7份和5份．随机地取一个地区的报名表从中先后抽出两份．1求先抽到的一份是女生的概率p2已知后抽到的一份是男生表求先抽到的一份是女生表的概率q．
Sixyearslaterinanabout-facetheFBIadmitsthatfederalagentsfiredteargascanisterscapableofcausingafireattheBranchDavidiancompoundnearWacoTexasin1993.Buttheofficialsaidthefiringcameseveralhoursbeforethestructureburstintoflameskilling80peopleincludingtheDavidians’leaderDavidKoresh.Inlookingintothiswe’vecomeacrossinformationthatshowssomecanistersthatcanbedeemedpyrotechnicinnaturewerefired--hoursbeforethefirestartedtheofficialsaid.DeviceswerefiredatthebunkernotatthemainstructurewheretheDavidianswerecampedout.TheFederalBureauofInvestigationmaintainsitdidnotstartwhatturnedtobeaseriesoffieryburstsofflamesthatendeda51-daystandoffbetweenbranchmembersandthefederalgovernment.Thisdoesn’tchangethebottomlinethatDavidKoreshstartedthefireandthegovernmentdidnottheofficialsaid.ItsimplyShowsthatdevicesthatcouldprobablybeflammablewereusedintheearlymorninghours.ThelawenforcementofficialsaidthecanisterswerefirednotatthemainstructurewheretheDavidianmemberswerecampedoutbutatthenearbyundergroundbunker.Theybouncedoffthebunker’sconcreteroofandlandedinanopenfieldwelltheofficialsaid.Thecanisterswerefiredataround6a.m.andthefirethatdestroyedthewoodencompoundstartedaroundnoontheofficialsaid.Theofficialalsoaddedthatotherteargascanistersusedbyagentthatdaywerenotflammableorpotentiallyexplosive.WhileCoulsondeniedthegrenadesplayedaroleinstartingthefirehisstatementmarkedthefirsttimethatanyU.S.governmentofficialhaspubliclycontradictedthegovernment’spositionthatfederalagentsusednothingonthefinaldayofthesiegeatWacothatcouldhavesparkedthefirethatengulfedthecompound.ThecauseofthefieryendisamajorfocusofanongoinginquirybytheTexasRangersintotheWacosiege.Fromthepassagewhatinformationcanbeinferredabouttheeventin19937______.
Atpicnicsantsarepests.Buttheyhavetheiruses.Inindustriessuchasminingfarmingandforestrytheycanhelpgaugethehealthoftheenvironmentbyjustcrawlingaroundandbeingantsy. Ithasbeenrecognizedfordecadesthatants--whicharehighlysensitivetoecologicalchange—canprovideanear-percentbarometerofthestateofanecosystem.Onlycertainspeciesforinstancewillcontinuetothriveataforestsitethathasbeenclearedoftrees.41Andstillotherswillmoveinandtakeupresidence. Bylookingatwhichspeciespopulateadeforestedareascientistscandeterminehow"stressed"thelandis.42Antsareusedsimplybecausethe>;aresocommonandcomprisesomanyspecies. Whereminesitesarebeingrestoredforexamplesomeantspecieswillrecolonizethestrippedlandmorequicklythanothers.43AustralianminingcompanyCapricornCoalManagementhasbeensuccessfullyusingantsurveysforyearstodeterminetherateofrecoveryoflandthatitisreplantingnearitsGermanCreekmineinQueensland.Antsurveysalsohavebeenusedwithmine-siterecoveryprojectsinAfricaandBrazilwherewarmclimatesencouragedenseanddiverseantpopulations."Wefounditworkedextremelywellthere’saysJonathanMajeraprofessorofenvironmentalbiology.YetthesurveysareperfectlysuitedtoclimatesthroughoutAsiahesaysbecauseantsaresocommonthroughouttheregion.AsMajerputsit."That’sthegreatthingaboutants.’ Antsurveysaresohighly-regardedasecologicalindicatorsthatgovernmentsworldwideaccepttheirresultswhenassessingtheenvironmentalimpactofminingandtreeharvesting.44. WhynotBecausemanycompaniescan’taffordtheexpenseorthelaboratorytimeneededtosiftresultsforacomprehensivesurvey.Thecoststemsalsofromthescarcityofantspecialists.45. [A]Thisallowedscientiststogaugethepaceandprogressoftheecologicalrecovery. [B]Yetinotherbusinessessuchasfarmingandpropertydevelopmentantsurveysaren’tusedwidely. [C]Employingthosepeopleareexpensive. [D]Theydothisbysortingtheantscountingtheirnumbersandcomparingtheresultswiththoseofearliersurveys. [E]Theevolutionofantspeciesmayhaveastrongimpactonourecosystem. [F]Otherswilldieoutforlackoffood.’ [G]Gretaceousantssharedacoupleofwasp-liketraitstogetherwithmodernant-likecharacteristics. 42
Itisoftenobservedthattheagedspendmuchtimethinkingandtalkingabouttheirpastlives1aboutthefuture.Thesereminiscencesarenotsimplyrandomortrivialmemories2istheirpurposemerelytomakeconversation.Theoldperson’srecollectionsofthepasthelpto3anidentitythatisbecomingincreasinglyfragile:4anyrolethatbringsrespectoranygoalthatmightprovide5tothefuturetheindividualmentionstheirpastasaremindertolistenersthatherewasalife6living.7thememoriesformpartofacontinuinglife8inwhichtheoldperson9theeventsandexperiencesoftheyearsgonebyand10ontheoverallmeaningofhisorherownalmostcompletedlife. Asthelifecycle11toitsclosetheagedmustalsolearntoaccepttherealityoftheirownimpendingdeath.12thistaskismadedifficultbythefactthatdeathisalmosta13subjectintheUnitedStates.Themerediscussionofdeathisoftenregardedas14Asadultsmanyofusfindthetopicfrighteningandare15tothinkaboutit—andcertainlynottotalkaboutit16thepresenceofsomeonewhoisdying.Deathhasachievedthistaboo17onlyinthemodernindustrialsocieties.Thereseemstobeanimportantreasonforourreluctanceto18theideaofdeath.Itistheveryfactthatdeathremains19ourcontrol;itisalmosttheonlyoneofthenaturalprocesses20isso. Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCotDonANSWERSHEET1.10
求极限其中n是给定的自然数
HowefficientisoursystemofcriminaltrialDoesitreallydothebasicjobweaskofit—convictingtheguiltyandacquittingtheinnocentItisoftensaidthattheBritishtrailsystemismorelikeagamethanaseriousattempttodojustice.Thelawyersoneachsidearesoengrossesinplayinghardtowinchallengingeachotherandthejudgeontechnicalpointsthattheobjectoffindingoutthetruthisalmostforgotten.Alltheeffortisconcentratedonthebigdayonthedramaticcrossexaminationofthekeywitnessesinfrontofthejury.Criticsliketocompareouradversarialsystemresemblingtwoadversariesengagedinacontestwiththecontinentalinquisitorialsystemunderwhichthejudgeplaysamoreimportantinquiringrole.InearlytimesintheMiddleAgesthesystemsoftrialacrossEuropewere’similar.Atthattimetrialbyordeal—especiallyareligiousevent--wasthemainwayoftestingguiltorinnocence.Whenthiswayeventuallyabandonedthetwosystemspartedcompany.Onthecontinentchurch-trainedlegalofficialstookoverthefunctionofbothprosecutingandjudgingwhileinEnglandthesewerelargelylefttolaypeopletheJusticeofthePeaceandthejurymenwhowereilliterateandthismeantthatalltheevidencehadtobeputtothemorally.Thishistoricalaccidentdominatesprocedureeventodaywithallevidencebeinggiveninopencourtbywordofmouthonthecrucialday.OntheotherhandinFranceforinstancealltheevidenceiswrittenbeforethetrialundersupervisionbyaninvestigatingjudge.Thisexhaustivepretriallooksveryundramatic;muchofitisjustapubliccheckingofthewrittenrecordsalreadygathered.TheAmericansadoptedtheBritishsystemlockstockandbarrelandenshrineditintheirconstitution.Butwhilethebasicfeaturesofoursystemsarecommontherearenowsignificantdifferencesinthewayseriouscasesarehandled.FirstbecausetheU.S.A.hasvirtuallynocontemptofcourtlawstopreventpretrialpublicityinthenewspaperandontelevisionAmericanslawyersareallowedtoquestionjurorsaboutknowledgeandbeliefs.InBritainthisisvirtuallyneverallowedandarandomselectionofjurorswhoarepresumednottobeprejudicedareempanelled.SecondlythereisnoseparateprofessionofbarristerintheUnitedStatesandbothprosecutionanddefenselawyerswhoaretopresentcasesincourtpreparethemselves.Theygooutandvisitthescenetrackdownandinterviewwitnessesandfamiliarizethemselvespersonallywiththebackground.InBritainitisthesolicitorwhopreparesthecaseandthebarristerwhoappearsincourtisnotevenallowedtomeetwitnessbeforehandBritishbarristersalsoalternatedoingbothprosecutionanddefensework.Beingkeptdistantfromthepreparationandregularlyappearingforbothsidesbarristersaresaidtoavoidbecomingtoopersonallyinvolvedandcanapproachcasesmoredispassionately.Americanlawyershoweveroftenknowtheircasesbetter.Reformersrightlywanttolearnfromothercountries~mistakesandsuccesses.Butwhatisclearisthatjusticesystemslargelybecausetheyaretheresultoflonghistoricalgrowtharepeculiarlydifficulttoadaptpiecemeal.WecaninferthatAmericanlawyers______.
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