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1.OnOpenPolicyTheopenpolicymeansthatourcountryisopentoinvestment,tradeandtechnicalandeconomiccooperationwithothercountriesonthebasisofequalityandmutualbenefit.Thepurposeofopenpolicyistoacquireadvancedtechnology,managementskillstoserveoursocialistconstructionsoastopromotetherealizationofthefourmodernizations.Wemustadheretotheopenpolicy.Becauseeconomicrelationsbetweenstatestodayhavebecomeincreasinglyclose,andnocountrycanpossiblyadvancebehindclosedoors.Onlyinthisway,canwegraduallyclosethegapbetweenourcountryandthedevelopedcountries.Throughtheimplementationofpolicy,wecanlearnadvancedtechnologyandmanagerialexpertisefromabroad;makefulluseoftheforeigncapitalstosetupgreatenterprises;absorbusefulandhealthyideasandnewknowledgeofthemoderncivilization;andbroadenourviewsandraiseourlevelofcompetence.2.TheplaceofScienceandTechnologyinModernLife.Humanlifecannotcontinuewithoutscienceandtechnology.Formanyyears,humansocietyhasdevelopedwiththeadvanceofscienceandtechnologywhilethedevelopmentofscienceandtechnologyhasinturnbroughttheprocesstomankind.Sothelifewearelivingnowismorecivilizedthanthatofourforefathers.Thedevelopmentofscienceandtechnologyhavebroughtaboutmanychangesinpeople'slife.Forexample,theinventionoftelevisionandspacerockethaveopenedaneweraformankind.ThroughtheuseofTVpeoplecanhearthesoundandlearntheeventshappeningthousandsofmilesaway.Owingtotheinventionofspaceshipandrocket,thedreamofman'slandingonthemoonhasnowcometrue.Scienceandtechnologyalsoplayanimportantroleinoursocialistconstruction.Wemaysay,oursocialistconstructionisjustlikeaskyscraper,whilescienceandtechnologyareitsbase.Withoutthebase,theskyscrapercan'tbebuilt.Therefore,weshouldtryourbesttocontributetothedevelopmentofscienceandtechnologysoastoprovideamoresolidbasetobuildourcountry.3.ImportanceofEducationChina,asadevelopingcountry,isdeterminedtocatchupwithandevensurpassthedevelopedones.Ithinkthatoneofthebestpossiblewaystodosoistogivefirstpriority(优先）tothedevelopmentofculture,scienceandespeciallyeducation.Inmoderntimes,whenscienceandtechnologyaremakinggreatprogress,theeducationoftheworkforceisofprimaryimportance.Moreover,manyofthesuccessinadvancedcountrieshavedemonstratedthatanation'sprosperitymainlydependsonthequalityofitslabourforce,namelythosewhohavebeenwelleducated.InadevelopingcountrysuchasChina,ourinvestmentinculture,educationandscience,andespeciallyelementaryeducation,mustenjoytoppriority.Thisiscrucial(决定性的）forChinatocatchupwiththedevelopednationsintoday'ssurging(汹涌的)wavesoftechnologicalrevolution.Otherwise,thegapbetweenChinaandadvancedcountrieswillbewidenedratherthanbridged.4.AirPollutionAirpollutionisoneofthemajorproblemsofthemodernworld.Agreatdealofenergyisneededtorunthefactoriesofmodernindustrialnations.Automobile,trains,planesandbussesneedenergy,too.Nearlyallofthisenergyisproducedbyburningfuels.Theburningproduceswastes,someofwhichremainintheair,causingairpollution.Scientistsarefindingwaystostopairpollutionespeciallyinbigindustrialareasanddensely-populatedcities.Theyarestudyingnewwaysofgeneratingelectricitythatmaybelessdamagingtotheenvironment.Inthemeantime,manypowerplantsarebeingmodernizedtogiveofflesspollutedmaterial.Also,engineerstrytodesignandlocatenewpowerplantstodominimumdamagetotheenvironment.However,itmaybethatwestillhavealongwaytogobeforewehavea"clean"world.Nearlyallofthecountriesaretryinghardto...