Unit1TheworldofoursensesPeriodOneWelcometotheunit&ReadingWhat’sthatsmell？Doyouhearthatnoise？Tastethis！Lookatme！Feelthis，isn’titsoft？Whenyouhear，orevenusethesephrases，youprobablydon’tstoptothinkaboutwhyweusethem.Well，it’sbecauseofoursense.Withoutusevenknowing，oursenseorgans(nose，eyes，ears，tongue，andskin)aretakingininformationandsendingittothebrainforprocessing.Ifwedidn’thavethem，wewouldnotbeabletosmell，see，hear，taste，ortouchanything!Sensesarethephysicalmeansbywhichalllivingthingssee，hear，smell，taste，andtouch.Eachsensecollectsinformationabouttheworldanddetectschangeswithinthebody.Bothpeopleandanimalsgetalloftheirknowledgefromtheirsenses，andthatiswhysensesaresoimportant.Allsensesdependontheworkingnervesystem.Oursenseorgansstarttoworkwhensomethingstimulatesspecialnervecells，calledreceptors，inasenseorgan.Oncestimulated，thereceptorssendnerveimpulsesalongsensorynervestothebrain.Yourbrainthentellsyouwhattodo.Forexample，yoursoundreceptorsareoftenattackedbybillionsofsoundwaves.Whenthesesignalsreachthepartofthebraincalledthecerebralcortex，webecomeconsciousofthesounds.Notes1．processv．处理2．detectvt.发现，查明3．stimulatev．刺激，激发4．impulsen．脉冲5．thecerebralcortex大脑皮层Task根据上文完成下列各题1．Sensesareveryimportantbecausebothpeopleandanimalsgetalloftheirknowledgefromthem.2．Howdooursenseorgansdealwithinformation?Oursenseorganstakeininformationandsendittothebrainforprocessing.3．Whatdoallsensesrelyon?Allsensesdependontheworkingnervesystem.PeriodOneWelcometotheunit&ReadingⅠ.单词自测1.raisedadj.凸起的raisevt.举起，抬升2．confusevt.使糊涂，使迷惑confusingadj.令人混乱的；令人困惑的confusionn．混乱(状态)confusedadj.感到混乱的3．fogn．雾foggyadj.有雾的，雾茫茫的4．forecastvt.&n．预测，预报forecast过去式forecast过去分词5．conductorn．(公交车)售票员；(乐队)指挥conductvt.指挥；实施；带领6．observevt.观察；注意到；评论observationn．观察observern．观察者7．glancevi.&n．瞥一眼，匆匆看8．nowhereadv.无处，到处都不9．whereveradv.&conj.无论哪里10．narrowadj.狭窄的11．approachvi.&vt.靠近；着手处理；n.靠近；方法；路径12．darknessn．黑暗darkadj.黑暗的13．hesitatevi.犹豫，迟疑不决hesitationn．犹豫14．graspvt.抓紧，抓牢15．starevi.凝视，盯着看16．anxiousadj.焦虑，忧虑anxietyn．焦虑17．firmlyadv.牢牢地，坚定地firmadj.牢固的，坚硬的18．gratefuladj.感激的，表示感谢的thankfuladj.(同义词)感激的，感谢的19．aidn．&vt.帮助20．reliefn．轻松；宽慰relievevt.使……感到宽慰21．pavementn．(马路边的)人行道Ⅱ.短语自测1．glanceat瞥一眼2．nowheretobeseen哪里也看不见3．insight看得到，在视力范围之内4．setoff出发；动身5．wishfor盼望，企盼6．comealong出现，到来7．reachout伸出(手)8．stareupat抬头凝视9．watchoutfor留心，密切注意10．inrelief轻松地，宽慰地11．payback报答；偿还(借款)Ⅰ.阅读课文，选出最佳答案1．Whydidn’tPollytakeabushome?A．Becausethebuseswerenotrunning.B．BecausetheUndergroundwasfaster.C．Becausethebusescouldn’truntoherhome.D．Becausethetaxiwouldbemoreconvenient.答案C2．WheredidPollytaketheUnderground?A．AtKingStreet.B．Nearherusualbusstop.C．AtGreenPark.D．AtParkStreet.答案B3．WhatdidPollymeanby“Areyousureyouknowtheway？”A．Shedidn’tknowwhereshelivedandhopedtheoldmancouldhelpherfinditout.B．Shecouldn’tfindherway，soshecouldn’ttelltheoldmanhowtogettoherhome.C．Sheworriedthattheoldmanwouldbringhersomewhereelseinsteadofherhome.D．Sheworriedthattheoldmanwouldge...
