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Themostimportantproblemsaffectingoursocietytodaycouldbesolvedwithinourlifetime.Astheeconomyandtechnologydevelopatanincrediblespeedintoday’ssociety,thereareanincreasingnumberofpeoplebelievingthatthemostimportantproblemsaffectingoursocietytodaycouldbesolvedwithinourlifetime.Inmyview,however,thisisoutofthequestionandthethreemostsignificantproblemsaffectingthesociety,namelywar,environmentaldestructionanddisease,willstillinfluenceusandmaynotbeentirelyresolvedforever.Warisaproblemafflictinghumanssincetheytookintobeinginthefirstplace.Warstakeplacewhendifferentcountrieshaveconflictingbenefits,whichisunlikelytobeeliminatedaslongastheboundariesbetweencountriesstillexist.Forinstance,intheMiddleEastwherewaterisextremelyscarce,manycountriesareinconflictincontentionforwaterresources.Sinceeverycountryactsforthesakeofitsownbenefit,itseemsthatpeopleintheregionareincapableoflivingtogetherinharmony.Eternalworldpeace,therefore,isunlikelytobeachievedinourlifetime.Environmentaldestructionemergednotlongbeforebutitisbecomingincreasinglysevereandcannotbeignored.Withthelarge-scaleutilizationoffossilfuelsandrapiddevelopmentofindustry,hugeamountsofpollutantsarebeingproduced,contaminatingtheenvironmenttoalargedegree.Thedisposalofthesepollutantsbeingatoughtask,itishardlypossiblethatwecancompletelygetridofthemwithinashortperiodoftime.Furthermore,evenifwecancomeupwithoptimalmethodsfordealingwiththesesubstances,thereremainstheproblemthatthesemethodsmaycosttoomuchandobstructthedevelopmentofeconomy.Lastbutnotleast,thewell-beingofpeoplearoundtheworldisthreatenedbyavarietyofdiseases,rangingfromAIDStocancer,thecuresforwhichhavenotbeendiscoveredyet.Diseasessetoffpanicsamonghumans,affecttheirnormallifeandleavepeoplebadlyoffwiththehighmedicalexpenses.Therearethousandsofscientistsdevotingthemselvestofindingcurefordiseases,butnewtypesofdiseaseskeepemergingandthereisnoeliminatingallofthem.Insummary,theproblemswiththemostsignificancetodayaregoingtobepassedontoouroffspring.Toeliminatetheseproblemsthoroughly,thereisstillalongwaytogo.Somepeoplethinkthatauniversityprofessorshouldfocustimeondoingresearch,whileothersthinkthatthemainroleofaprofessoristoeducatestudentsinauniversity.Whatisthemainroleofauniversityprofessor,toeducatestudentsortodoresearch?Somepeoplebelievethatprofessorsshouldfocustheirtimeondoingresearch,butasfarasIamconcerned,itiseducatingthatdeservesmoredevotionofprofessors.Tobeginwith,professorsareteachersinuniversities,soitistheirresponsibilitytoteachstudentswithabsolutededicationandenthusiasm.Universityprofessorsplayancriticalroleinstudents’learningknowledgeandthemethodsforlearning,bygivinglecturesinclassaswellasassigningthemtaskstodousingwhattheyhavelearned.Agoodprofessorshouldbesomeonewhocanteachwellandispatientwithstudents.Inaddition,takingeducationasthemainresponsibilitydoesnotmeanthatprofessorsarenotsupposedtodoresearch.Onthecontrary,thosewhohaveachievedsuccessinresearchtendtobebetterteachers.Doingresearchallowsprofessorstohaveabroaderhorizon,enablingthemtoseizethepointofthescienceandtechnologytodayandtohaveadeepunderstandingoftheknowledgetheyaregoingtoteach.Furthermore,professorswhodoresearchwellmayoffertheirstudentsbetteropportunitiestodoresearchinthefieldtheystudy.Admittedly,therearescientistswhocannotteachwellbutstandoutintheirspecializedfield.Ratherthanteachinganddoingresearchatthesametime,Ibelievethattheyshouldconcentrateontheirresearchandnottakethepositionasprofessors.Therearemanypeoplewhoaremerelyresearchersandwhoseachievementintheirspecializedareasiswithoutparallel.Asforprofessor,thisoccupationshouldbelefttothosewhocangivequalitylecturesandhelpstudentstolearnwell.Inconclusion,professorsshouldregardeducatingstudentsastheirmainresponsibilityanddevotethemselvestoteaching.Intoday’ssociety,however,therearesomeprofessorswhodonotteachstudentswithdedication.Theyfocusonresearchmerelyformoney,whichwillnotonlydoharmtostudents’study,butwillhinderthedevelopmentofscienceaswell.Itisoftennotagoodthingforpeopletomovetoanewtownoranewcountrybecausetheywilllosetheirfriends.Manypeoplehavehadtheexperienceofmovingfromoneplacetoanother.Somefeelsitabadthingbecausetheywilllosetheiroldfriendsintheplacetheymovefrom.Inmyview,however,itisanythingbutabadthing.Notonlywillwekeepintouchwithouroldfriends,butwewillmakenewfriendsaswell.Withthemoderncommunicatingtechnology,distanceisneverabarrierthatkeepspeoplefromcontactingothers.Evenifpeopletoanewtownoranewcountry,telephone,emailandinstantmessagewillallowthemtokeepinconstanttouchwiththeiroldfriendswithoutanyinconvenience.Takemyselfforexample.WhenIenteredcollege,IhadtoleavemyhometownforBeijing,thusIwasseparatedfrommyfriendsinmyhometown.ButIcalledthemeveryweekendandweoftenchatonlinewhenwearebothfree.Sodistancedidnotmakemelosetouchwiththematall.Furthermore,itcouldevenbeagoodthingtomoveawayforpeopleandtheiroldfriends.Insteadofbecomingestrangedfromeachother,theywillmisseachotherandthusbecomeevenmoreintimate.Nothavingconflictsovertrifles,peoplewillappreciatethemeritsoftheirfriendsmore.Thereisasayingthat‘distancemakest