雅思写作学习课件cambridgeexpressions.doc

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2、dthepracticalneedof...,theriseofAisassociatedtheriseofB.Passage2:(S)Afewyearsago,Analternativetothisnotionofgeneticprogrammingistoseetheasaresultofthe...Herewehavetworadicallydifferentexplanationsforwhysomanyteacher-subjectswerewillingtoforgotheirsenseofpersonalresponsibilityforthesakeofaninstitutio

3、nalauthorityfigure.Theproblemforbiologists,psychologistsandanthropologistsistosortoutwhichoftheseismoreplausible.This,inessence,istheproblemofmodernsociobiologyPassage3Formanyenvironmentalists,theworldisgettingworse.Thegrowthofurbanareasexacerbatedmanyproblems,includingtheabsenceofcleandrinkingwater

4、,thelackofcheappublictransportation,andmoreimportantly,poorsanitation.Theworldtodayisundergoingextensiveandprofoundchanges,andcontemporaryChinahasawide-ranginganddeep-goingtransformation,itbringsusunprecedentedopportunitiesaswellasunprecedentedchallenges.(S)Theyhavedevelopedahit-listofourmainfears.T

5、henaturalresourcesarerunningout.Thepopulationisevergrowing.Butaquicklookatthefactsshowsadifferentpicture.Morefoodnowisproducedperheadofworld’spopulationthananytimeinhistory.Mostformsofenvironmentalpollutioneitherappeartohavebeenexaggerated-associatedwiththeearlyphasesofindultrialisation.Abiggerprobl

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