Unit51.identifyvt.Fredidentifiedthebagashisbytellingwhatitcontained.identifyvt.2.alternativen&adj.2.alternativeadj.可供替代的3.starvation[u]n.挨饿；饿死4.tentativeadj.5.accuracy[u]n.精确；准确6.interruptvt&vi.interrupt7.acuteadj.7.acuteadj.8.assumevt.8.assumevt.9.regardlessadv.不管；不顾(payingnoattention,evenifthesituationisbadortherearedifficulties)10.at(the)most至多；最多11.sharpenv.3)vt.（使感觉/情）加强；加重make(senseorfeeling)becomestrongercutup/cutdown/cutoff/cutoutampleadj足够的，充分的（enoughormorethanenough）14.primitiveadj.preserve:vtsignificance:n[u]somehowadv.fedupwithadj；厌倦；厌烦；不愉快(boredorunhappywithasituationthathascontinuedfortoolong)lookahead向前看;为将来打算(planfuturesituations;thinkaboutthefuture)applaud:v18.arrestvt&n.arrestvt19.dateback追溯到…