《大学英语自学教程》下册课后习题答案unit-

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1、《大学英语自学教程》下册课后习题答案unit11-15第十一单元TextAExercisesfortheTextI.1.b2.d3.a4.d5.dII.1.disorder2.development(advances)3.irrelevant4.misleading5.irresponsible6.eventual7.reduce8.undergo9.alternative10.ethicalIII.1.Theuseofanimalscanhelpthedevelopmentofa.anesthetics

2、b.vaccinesc.treatmentsfordiabetesd.cancere.developmentaldisorder2.ThethreeR'ssuggestedbyFRAMEarea.Reductionb.Refinementc.Replacementandtheirindividualmeaningsarea.toreducethenumberofanimalsusedintestingb.todesignbetterandrefineexperimentsc.tofindalternati

3、vemethodsoftestingratherthanbyusinganimals3.LD50originallymeans:alltheanimalsinatestgrouparegivenasubstanceuntilhalfofthemdie,whilethenewmethodmeans:byusingafixedamount,itgivesthesameeventualinformationbutusesfeweranimalsanddoesnotrequirethattheydie.IV.in

4、;children;kids;at;of;going;noisy;she;soldiersV.1.Animalresearchhasbeencentraltothedevelopmentofhumanmedicine.2.Peoplethinkdifferentlyaboutwhetheranimalresearchisrelevanttophysicalhealthofman.3.Thenumberofanimalsusedinlaboratorytestshasdeclinedoverthepast2

5、0years.4.Newresearchfindingsshowthatasmallnumberoflaboratorytestscanbedonewithoutusinganimals.5.Althoughmedicaltechnologybecomesmoreandmoreadvanced,stoppingtestingonanimalsaltogetherisalongwayaway.VocabularyExercisesI.1.a.developb.developmentalc.developme

6、nt2.a.relevanceb.irrelevantc.relevantd.relevantly3.a.irresponsibleb.responsiblec.responsibility4.a.ethicsb.ethicalc.unethical1.paralyzed2.regeneration3.simulating4.suitable5.misleading6.replace7.eventual8.disorder9.lethal10.undergoIII.1.Theartisthasreprod

7、ucedeverydetailofyourappearanceintheportrait.2.Weshouldaimwitheffortsforhigherproductivity.3.Hehasgivenevidencecentraltothisproblem.4.Idon'tthinkwhathesaidrelevanttoourtopicofconversation.5.Thecity'ssecurityisundergoingsomechanges,duetotheincreasingnumber

8、ofpeopleswarmingintoit.TextBExercisesfortheTextI.1.T2.T3.F4.T5.F6.F7.T8.F9.F10.FII.1.beautiful;intelligent;favored2.humanity3.patient;understanding4.attaches;goingsandcomings5.sit;contemplate;contented;serene6.morei