Unit4Astronomy：thescienceofthestarsSectionⅢLearningaboutLanguage&UsingLanguageⅠ.单句语法填空1．—Whatdoesthemodelplanelooklike?—Well，thewingsoftheplanearemorethantwicethe________(long)ofitsbody.答案：length2．Look！Thereissomethingstrange________(float)onthewater.答案：floating3．Amancameinandputabigvaseonthetable________(gentle)．答案：gently4．ItiswellknownthatNewtonwasafamous________(physics)．答案：physicist5．________(like)mostpeopleintheofficewhocometoworkbycar，Iusuallycometoworkbybus.答案：Unlike6．Weliveina____(globe)village，butthisdoesn’tmeanthatweallbehaveinthesameway.答案：global7．—Dorememberwatchout________carswhilecrossingthestreet.—Gotit.答案：for8．________(cheerful)up！Youmustbelieveinyourselfandyouwillgetsuccess.答案：Cheer9．—WhatdoyouthinkofFrench?—Inmyopinion，Frenchisasdifficultasubject________English.答案：as10．Studentsshouldfindmoretimetogetclose________naturewhichcanencouragetheircreativity.答案：toⅡ.阅读理解ASome_peoplearelikehomingpigeons：Dropthemoffanywhere，andthey’llfindtheirwayaround.Otherpeople，though，can’ttellwhenthey’reholdingamapupsidedown.Arethedirectionallychallengedjustbadlearners?Notallofyournavigational(导航的)skillsarelearned.Researchshowsthatyoursenseofdirectionisinnate.Aninnateabilityissomethingyouarebornwith.Yourbrainhasspecialnavigationalneurons—headdirectioncells，placecells，andgridcells(网格细胞)—andtheyhelpprogramyourinsidecompass(指南针)whenyou’rejustababy.In2010，scientistscarriedoutanexperimenttostudybabyrats’neuralactivityintheirbrains.Althoughtheratswerenewborns，theresearchersdiscoveredthattheirheaddirectioncells(whichhelpthemrecognizethedirectionthey’refacing)werefullygrownanddeveloped.Therats，itseemed，werebornwithasenseofdirection.Andtheyhadn’tevenopenedtheireyesyet!Humans，ofcourse，arenotrats.Butthehippocampus—thebrainareaweusefornavigation—issimilarinmostmammals(哺乳动物)．Iftherat’scompassdevelopsthisway，thenit’slikelythatahuman’scompassdoes，too.Ifwe’rebornwithasenseofdirection，thenwhyaresomepeoplesogoodatgettinglost？Thescientistsfoundthatthetwoothercells—placeandgridcells—developedwithinthefirstmonth.Placecellsarethoughttohelpusformamapinourmind，whilegridcellshelpusnavigatenewandunfamiliarplaces.Thetwocellsworktogether，andthat’swherethetroublemightbe.Peoplewhotookpartina2013studyplayedavideogamethatrequiredthemtotravelquicklybetweendifferentplaces.Monitoring(监测)theirbrains，thescientistsfoundthatgridcellshelpedthegamersrecognizewheretheywere—evenwithoutlandmarks.AccordingtoresearcherMichaelKahana，differencesinhowgridcellsworkmayhelpexplainwhysomepeoplehaveabettersenseofdirectionthanothers.语篇解读本文是说明文。科学家发现，有些人方向感好是因为他们的网格细胞更加发达。1．Theunderlinedwords“Somepeople”refertothosewho________.A．arebadlearnersB．lovehomingpigeonsC．likeusingmapstonavigateD．haveagoodsenseofdirection解析：篇章结构题，根据划线部分后的arelikehomingpigeons：Dropthemoffanywhere，andthey’llfindtheirwayaround可知，Somepeople指的是那些方向感好的人。答案：D2．Whatdidthe2010researchfind?A．Ratshaveanaturalabilitytorecognizedirections.B．Rats’hippocampusisdifferentfromthatofhumans.C．Ratsusuallyfindtheirwaywithoutopeningtheireyes.D．Babyratshaveasmanyheaddirectioncellsasgrownups.解析：细节理解题。根据第三段中的Therats，itseemed，werebornwithasenseofdirection...
