译林版高中英语学案选择性必修第三册精品课件 Unit 2 Out of this world 分层跟踪检测（三）.ppt

02Unit2Outofthisworld;Ⅰ.阅读理解;Ifyouaretryingtorecallsomethingafteralongtime（itcanbeevenonehourforuselessinformation）,yourbrainwillhaveahardtimefindingit,asit’smorelikelythatyouhaveforgottenit.Knowingthis,wecantrytounderstandwhyweforgetwhatwe’velearnedjustafewhoursago.Whenanewpieceofinformationentersyourbrain,itisstoredasunstableinformation,becauseyourbraindoesn’tknowwhetherit’susefulornot.Forexample,youdon’tneedtoremembereverycaryou’veseeninyourdailycommute（通勤）towork.

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Butwhathappenswhenyoutrytorecallsomethingyou’vepreviouslylearned?Mosttimesyousimplycan’t.IfIwouldtellyounowtofindthesumofthenumberfrom1ton,youhavetocalculate（n+1）×n/2,chancesarethatwithinonehourit’llbealreadyhardforyoutorecallthecorrectformula（公式）,althoughit’sprettyeasy.Thishappensbecause（ifyouarenotgoodatmath）yourbraindoesnotfindsimilarinformationalreadystoredinyourbrain,soit’shardforittostrengthenthatinformationalone.Andbynowyou’veprobablyforgottenit.Asyou’vejustread,themajordifficultyforyourbrainistostrengthenandcreateconsistency,andthebestwaytohelpyourbraindoitistorecallwhatyou’vejustlearnedmanytimes.;【语篇导读】本文是一篇说明文。大多数人会在12到24小时内忘记他们刚学过的东西,因为刚接触到的信息只能以短时记忆的方式存储在大脑里,不加强化,很快就会被忘记。;2.Wecanlearnfromthetextthatwemayforgettheuselessinformation___.;3.Whatmighthappenwhenwetrytorememberthethingswe’vepreviouslylearned?();4.Whatcanwedoifwewanttorememberwhatwehavelearned?();B

Somenewcometshavebeendiscoveredaccidentallybyamateur（业余的）astronomers.Surprisingly,afewbrightcometshavebeendiscoveredwiththenakedeye（肉眼）bymembersofthegeneralpublic.However,agreatnumberofcometsarefoundbycomethunterscarryingouttelescopesearchesofchosenareasofthenightsky.

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