understanding-science

Unit3PublicAttitudesTowardScienceBeforeReadingPassagedictationListening:GMCropsBrainstormingPassageDictation1)I’mgoingtoexpressmyviewsonwhatconstitutesarealfriendship.2)Distancedoesn’tmatter.3)Youcanhavegoodfriendsthatyouleavebehindwhenyoumove,butarealfriendisalwaysthere.4)Maybeyoukeepinclosecontact,butwhenyougetintouchorgettogether,it’slikeyouwereneverapart.PassageDictation5)Somethingsdon’tneedtobesaid.6)Youknoweachotherthatwell,andyouunderstandwheretheotherpersoniscomingfrom.7)Youtrustthemcompletely.8)Youareonlyhuman,andsometimesyouwillhurteachother,butyouknowyouwillalwaysworkitouteventually.GMCropsGeneticallymodified转基因是指，改变活体生物的细胞，以使该生物用不同的方式生长，并具有不同的功能。目前全世界有大约3500万公顷的土地生产转基因作物。第一批转基因试验是在20世纪70年代中期进行。GMCropscontaminationcontaminateremotetrialseparationthreatenvironmentrangegenemaizebancultivatedoriginatesampleGMCropsmountainouscurrentlybeunderwayprotestbiotechindustrydramaticpropagandafoodaidimportedspreadGMCropsIntheUK,thesubjectofgeneticallymodifiedcropsisacontroversialone.Closeattentionisbeingpaidtotheexperienceofothercountrieswheretheyarealreadybeinggrown.Thisnewsitemreportsonacaseoflocalplantsbeingcontaminatedbygeneticallymodifiedcropssomedistanceaway.1)ContaminationbyGMcropsinMexico.2)GMtrialsintheUSA.3)Wherecontaminatedcropswerefound.4)HowmuchmoneyGMtrialscost.5)SeparationdistancesbetweenordinarycropsandGMcrops.6)Whatscientiststhinkaboutthepossiblethreattotheenvironment.7)Thegovernment’sopinion.8)Howthecontaminationmighthavehappened.QuestionAnswering1)InwhatcountryhaveGMcropscontaminatedothercrops?2)Whodiscoveredthis?3)HowfararecontaminatedplantsfromthenearestGMcrops?4)WhendidMexicobanGMmaize?Mexico.Scientists.60miles.Threeyearsago.Therearefearsthis________thatgeneticallymodifiedcropscouldhavea_____rangeofcontaminationthanpreviously______.ScientistsinaremotepartofMexicohave________thatlocalplantshavethegenesusedtomodifymaize,_____thoughthenearestGMcropsiteis60miles_____.Mexicobannedthe_______ofmodifiedmaizethreeyearsago.lunchtimewiderthoughtdiscoveredevenawayplanting1)Maizewasoncecalledtheplantofthegods.2)MaizeoriginatedintheUSA.3)Fouroutoftensampleswerecontaminated.4)GMmaizewasfoundinnorthernMexico.5)GMmaizewasfound20milesfromtheroad.6)IntheUK,commercialplantingofGMcropshasbeenbannedforfiveyears.Oncecalledthefoodofthegods,maizeismankind’smostwide/widelycultivatedplant.ItoriginatedfromMexico,wherescientisthavediscoveredDNAfromgenetic/geneticallymodifiedcropsinthecountry’snativemaize.Fouroutofsixsampleswerecontaminated,despiteabanonnew/newlyGMplantingsin1998.Butthegreater/greatlysurpriseiswheretheGMmaizewasfound,nearOaxacainsouthernMexico,inaremote/remotelymountainousregion,morethan10milesfromthenearestroad,and60milesfromthenearest/nearlyknowncommercialGMcrops,inthelowlands.IntheUK,GMtrials,whichincludemaize,arecurrent/currentlyunderway.Highprofileprotestsresultedinathree-yearbanoncommercialplanting.Therearenowrenewedconcernsabouttheseparationofcrops.Separationdistancesneedto___lookedat.They’vebeenlookedat____,andtheywerechanged,butthey_____adequateenough.I___thisresearch___showthatit,theyneedtobelookedat_____,andchangesneedtobe____,inorder___protectfarmersintheUK.beonceweren’tthinkwillagainmadetoYouhearamantalking.Whodoyouthinkheis?AfarmerAprotesterAscientistThewomansaysthatseparationdistances_____.areadequatehaveneverbeenchangedhavebeenchangedseveraltimeshavebeenchangedonceChangesinseparationdistanceswillprotect_____.UKfarmersscientiststhebiotechindustryGMcropsThemanthinksthat_____.thereisathreattotheenvironmentpeopleareusingtheresearchaspropagandaforcropspeopleareusingtheresearchaspropagandaagainstcropspeopledon’tcareDidthecontaminationinMexicocomefromfoodaid?MaybeDefinitelyDefinitelynotProbablyadequatebandisagreedramaticremoteThefashiondesigner_____theuseofrealfur.I_____withMr.Macpherson.Ithinkheiswrong.Thiscottageisinavery_____area.Shearrivedlateandmadea_____entrance.Thecarwasnotbig,but_____forourluggage.GMCropsFORAGAINSTPEOPLEBR__warm-Brainstorming-Brainstormsome…Brainstormsomeofthescientificandtechnologicalinventions.e-mailmobilephoneclonenuclearweaponslaptop(笔记本电脑)nanotechnology(纳米技术)geneticengineeringBR__warm_Brainstorming-DiscussionWritingDoalltheseinventionsalwayschangeourlivesforthebetter?BR_Background_StephenHawking-mainStephenHawking1.BriefIntroductiontoStephenHawking2.ChronologyofStephenHawking3.MainAchievementsofStephenHawkingBR_Background_StephenHawking-1.StephenHawkingStephenHawking(1942~):Britishtheoreticalphysicistandmathematician1.BriefIntroductiontoStephenHawkingBR_Background_2.ChronologyofStephenHawking-12.ChronologyofStephenHawking--1942Bornin--1958Enteredandbecameespeciallyinterestedinthermodynamics（热力学）,relativitytheory,andquantummechanics（量子力学）.--1962Receivedabachelor’sdegreeinphysicsandthenenrolledasaresearchstudentingeneralrelativityatthe.UniversityofCambridgeOxford,England.OxfordUniversityBR_Background_2.ChronologyofStephenHawking1-12.ChronologyofStephenHawkingOxfordUniversi