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Unit
51.identifyvt.~sb./sth.assb./sth.确认,证明某人/某物系某人/某物她认出那个男子就是袭击她的人Thepolicearetryingtoidentifythedeadbody.Scientistshaveidentifiedthegenethatcausesabnormalgrowth.identificationn.鉴别;身份证明identificationcard身份证identityn.身份;特征identicaladj.完全相同的,一样的
2.alternativeadj.作定语供选择的,可代替的Werecommendusingalternativesourcesoffuelsuchascharcoal木炭.Asthereislessandlesscoalandoilscientistsareexploringnewwaysofmakinguseofalternativeenergysuchassunlightwindandwaterforpowerandfuel.n.可能的选择;替代物Minibuseswithseatsfor12passengersofferanalternativetoexpensivetaxisandcrowdedpublictransport.I’msorrythere’snoalternativebuttosellthecar.别无选择只好做……havenoalternativebuttodo=havenochoicebuttodo=havenothingtodobutdo除了放弃那个计划,我别无选择Ihavenoalternativebuttogiveuptheplan.=Ihavenochoicebuttogiveuptheplan.=Ihavenothingtodobutgiveuptheplan.
3.Revi...。