Unit1TalesoftheunexplainedTherearemanypeoplewhooftendiscusswhetheraliens(外星人)arerealornot.Therearealsosomedifferentstoriesaboutaliens.Doaliensreallyexistinspace？Whenyouthinkofaliens，whatcomestoyourmind？Whateverpictureswehaveofaliensinourmindisduetotheinfluencefromnewspapers，theInternetandtheTV.Therecouldbelifeformsastiny(极小的)assomemicroorganismsoraslargeasgiantdinosaurs.Scientistsarguethattheuniverseisfartoohugeanditisveryunlikelythatonlyourplanetcansupportlife.Theremustbeotherplanetswhichsupportlifebutareunknowntous.OneoftheorganizationsworkingonouterspacelifeisSETI.Astrophysicist(天体物理学家)CarlSaganbelievesthepresenceoflifeoutsidetheEarth.FrankDrake，founderofSETI，isanotherscientistwhohasdevotedhislifetoprovidingthepresenceoflifeoutsidetheEarth.ManyotherresearchprojectshavebeenandarestillbeingcarriedouttocollectevidenceoflifeoutsidetheEarth.Infact，BrunoD’ArgenioandGiuseppeGeracihavefoundevidenceoflifein4.5billionyearoldmeteorites(陨石)．JustastherearepeoplewhosupporttheexistenceoflifeoutsidetheEarth，thereareotherswhothinkofitasafarfetchedidea.Theyargue，ifthereislifeoutsidetheEarth，whyhavewenotbeenabletogetanyhardevidencetilltoday?根据上文判断正(T)误(F)1．ThescientistsaresurethattherearesomealiensoutsidetheEarth.(F)2．PeoplehavedifferentopinionsonwhetherthereislifeoutsidetheEarth.(T)PeriodOneWelcometotheunit&ReadingⅠ.重点单词1．unexplainedadj.无法解释的，神秘的explainv．说明，解释2．puzzledadj.困惑的，茫然的puzzlingadj.令人困惑的3．dueadj.由于，因为；预期的；适当的4．disappearvi.消失；失踪appearvi.出现5．witnessn．目击者，证人；vt.目击，见证6．flashn．&vi.闪光，闪耀7．assumevt.假定；认为8．constructionn．施工；建筑物constructvt.建设；建造9．occurvi.发生10．aboardadv.&prep.在(轮船、飞机、火车等)上；上(轮船、飞机、火车等)11．possibilityn．可能性possibleadj.可能的12．casen．案件；具体情况，实例13．amazingadj.令人惊奇(惊叹)的14．injuryn．伤害15．dismissvt.不予考虑；解雇；解散Ⅱ.重点短语1．stepup加紧，加强，促进2．dueto由于，因为3．showup出现，现身4．takechargeof负责，掌管5．makeup编造，杜撰；构成6．lookinto调查Ⅲ.重点句式1．That’swhy...那就是……的原因。That’swhyitiscalledaUFO!那就是它被称为UFO的原因！2．seesb.doingsth.看到某人正在做某事WitnessesalsosaytheysawJustinwalkingtowardshishouseat10.45p．m.目击者也都说，当晚10点45分他们看到贾斯廷往回家的方向走。3．表语前置的倒装句Standinginsidewerelotsofstrangecreatureswithwhiteskinandlargeblackeyes.里面站着许多白皮肤、眼睛又黑又大的奇怪生物。4．sothat以便，目的是ThealienstookmeaboardtheUFOsothattheycoulddoresearchonme.那些外星人将我劫持到飞船上，以便他们在我身上做研究。5．状语从句的省略WhenaskedaboutthepossibilitythatJustinwastakenbyaliens，DetectiveSamPeterson，whohastakenchargeofthecase，toldjournalists...当被问及贾斯廷被外星人劫持的可能性时，负责调查此案的萨姆·彼得森侦探告诉记者……Ⅰ.根据课文内容判断正(T)误(F)1．JustinFoster，ahighschoolstudent，waslastseenWednesdaynight.(F)2．Kellyheardherbrother，JustinFoster，putonhisfavoriteCDthatnight.(T)3．Justin’sfriendssaidthatJustinwenttoschoolafterthegame.(F)4．MrsMavisWoodsaidthatshehadeverbeentakenawaybythealiens.(T)Ⅱ.课文阅读理解1．Themainideaofthispassageis.A．thatalienstookawayaboyB．thataliensdoexistC．thataboywasmurderedD．aboutdifferentopinionsofamissingboy答案D2．WhenandwherewasJustinmissing?A．OnFridaymorning，athome.B．OnFridaynight，athome.C．Las...
