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        1Describe an art such as song or painting that gives you long lasting impression.

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        4xvB(ti)W(xu)еcyclic population changefһB(ti)ϵy(tng)(ecosystem)֮gĔ(sh)(population)ǻӰ푵ʳ(predator)ͱʳ(prey)Ĕ(sh)һc

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        (1)prey (mice)࣬predatorʳ(ڽֳ)population ;

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        (3)predatorprey_ʼ(ֽϵһA)ѭh(hun)population ƽ⡣

        fHϵAξǵһAcyclic؏(f)@A

        }Y(ji)όԒxffpopulation cycle changeĶx

        5Ҫˇg(sh) paperҪȥmuseummuseum ҪP(gun)Tˣֻܽȥ@nҪ

        Ůo˃ɂh

        (1)ؓ؟(z) paper ĽՈtf@ӽڕ;

        (2)nώՈ٣Ȼȥmuseumȱă(ni)ݿԻ؁ٳPӛ(IJȱnnώwՏ)

        6W(xu)еreinforcement֞positive reinforcementnegative reinforcementɷN܉򼤰l(f)dȤĖ|ԼϲgĖ|

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        (1)positive(add the pleasure)𪄄Լõfood(rewarding yourself favorite food )@ӾͿ׌ϲg@Nbehavior

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