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1、Unit1：1.Whatfactorsmayweakenone'smemory?Itisoftenreportedthatlong-termpoornutritionmayaffectthefunctioningofthebrain,thusdamagingboththelong-termandshort-termmemory.Alsoharmfultoone'smemoryislackofwater.Elderlypeopleneedplentyofwatertoguaranteetheirmemoryworks.Athirdfacto
2、rislackofsleep.Withoutenoughsleep,onemayfeeltiredandhavedifficultyconcentrating,nottomentionlearningthingsbyheart.2.Canyoudescribesomepossibleadvantagesofhavingapoormemory?Apoormemorymayhavesomeadvantages.Withthepassageoftime,thesadmemorieswillfade.Thosewithashortmemoryte
3、ndtorecoverfasterthanthosewithatenaciousmemory.Forthesamereason,forgetfulpeoplemaybemorereadytoforgettheirdailyworriesandforgiveothersfortheiroffenses.Withalessretentivemind,theymayenjoylifemore.Unit2：2.Doyouthinkitisnecessary?Someparentsbelievethatbydoingalotofdifficultm
4、athproblems,theirchildrenwillhaveasolidfoundationinmath.Someparentsevenbelievethattryingtosolvehardmathproblemswillpromotethegrowthofchildren'sbrainsandhelpdeveloptheirlogicalreasoningabilityandconcentration,whichwillfacilitatelearninginotherareas.Ontheotherhand,manypeopl
5、ebelievethatitisunnecessaryandunnaturalforchildrentostudydifficultmathproblems.Somepeopleevenbelievethatstrictmathtrainingharmschildren'smoralandphysicaldevelopment.Fiercecompetitionmaydampenthespiritofteamwork,whichissoimportantinthecontemporaryworld.4.Howtopreventstuden
6、ts'cheatinginexaminations?First,theadministratorsmustadoptseveremeasurestopunishthatdisgracefulpractice.Inthecaseofseriousoffenders,itisnotenoughjusttogivethemanF.Theymustrepeatthewholeyear,orevenbeexpelledfromschool.Second,itismoreimportantforteacherstoenforcetheuniversi
7、tyrulesstrictly.Whentheyseestudentscheating,theyshouldnotturnablindeyetoit.Unit3：1.Whatdoyouthinkarethethingsthatcontributetoasuccessfulmarriage?Thesuccessofamarriageisduetomanyfactors,ofwhichloveisobviouslythemostimportantone.Otherfactors,whicharenotentirelyunrelatedtolo
8、ve,includesharedvaluesandinterests,mutualunderstanding,commitment,effectivecommunication,similar
